TIDMNG.

RNS Number : 3535O

National Grid PLC

17 May 2018

 
 
        London | 17 May 2018: National 
   Grid, a leading energy transmission 
             and distribution company, 
              today announces its Full 
                         Year results. 
 
 
 Report for the year ended 
  31 March 2018 
 Operational Highlights                                              Financial Highlights 
   *    Strong operational performance across the Group                *    Underlying operating profit up 4% to GBP3.5bn (6% at 
                                                                            constant currency); statutory operating profit up 9% 
                                                                            to GBP3.5bn 
   *    US regulated Return on Equity at 95% of allowed rate, 
        better than target 
                                                                       *    Underlying EPS of 60.4p, (up 3% on 2017 adjusted for 
                                                                            Cadent pro forma) 
   *    Continued UK outperformance generated around GBP540m 
        of customer savings in the first five years of RIIO 
                                                                       *    Headline EPS of 59.5p (statutory EPS of 103.8p) 
 
   *    Good progress in NG Ventures, with increased 
        interconnector investment                                      *    Group RoE of 12.3% (2017: 11.7%) 
 
 
   *    Continued execution of our strategy with option                *    Significant capital investment of GBP4.3bn, up 14% at 
        agreement on remaining 25% stake in Cadent                          constant currency 
 
 
                                                                       *    Asset growth of 6% 
 
 
                                                                       *    Recommended full year dividend of 45.93p 
==================================================================  =================================================================== 
 Financial Summary 
  Year ended 31 March - continuing operations only 
                                                Statutory results                                        Headline[1] 
------------------------   ==========================================================  ============================================== 
                                          2018                2017           % change            2018         2017           % change 
                           -------------------  ------------------  -----------------  ==============  ===========  ================= 
 Operating profit 
  (GBPm)                                 3,493               3,208                  9           3,457        3,773                (8) 
=========================  -------------------  ------------------  -----------------  --------------  -----------  ----------------- 
 Profit before tax 
  (GBPm)                                 2,708               2,184                 24           2,650        2,807                (6) 
=========================  -------------------  ------------------  -----------------  --------------  -----------  ----------------- 
 Earnings Per Share 
  (p)                                    103.8                48.1               116*            59.5         56.9                  5 
=========================  -------------------  ------------------  -----------------  --------------  -----------  ----------------- 
 Capital Investment 
  (GBPm)                                 4,251               3,862                 10 
=========================  -------------------  ------------------  ----------------- 
 * Includes 43.7p for the impact of GBP1.5bn 
  exceptional accounting credit relating to 
  US tax reform 
                                              Underlying (including 
                                             Cadent pro forma)[1](,) 
                                                       [2] 
                           ========================================================== 
                                          2018                2017           % change 
========================   -------------------  ------------------  ----------------- 
 Operating profit 
  (GBPm)                                 3,495               3,375                  4 
=========================  -------------------  ------------------  ----------------- 
 Profit before tax 
  (GBPm)                                 2,688               2,582                  4 
=========================  -------------------  ------------------  ----------------- 
 Earnings Per Share 
  (p)                                     60.4                58.6                  3 
=========================  -------------------  ------------------  ----------------- 
 
 

John Pettigrew

Chief Executive

"We delivered strong operational and financial performance in 2017/18. Our networks achieved high levels of reliability and safety and we increased customer driven investment to GBP4.3 billion. The US business continued to make significant progress enabling record levels of investment. In the UK, we continued to deliver incentive outperformance generating significant cost savings for customers. Consistent with our strategy, we continued the repositioning of our portfolio towards stronger growth with the recent agreement for the potential sale of our remaining interest in Cadent.

Looking ahead, National Grid expects growth at the top end of the 5-7% range for the medium term, and at least 7% in the near term, which we will deliver with continued capital discipline and improved efficiency across the Group. The business is well positioned with a balanced portfolio and an efficient balance sheet that underpins asset and dividend growth."

Contacts

 
 Investor Relations 
================================================================================ 
                                       +44 (0)20 7004 
 Aarti Singhal                                   3170        +44 (0) 7989 492447 
================================  ===================  ========================= 
                                       +44 (0)20 7004           +44 (0) 7584 206 
 Will Jackson                                    3166                        578 
================================  ===================  ========================= 
                                       +44 (0)20 7004           +44 (0) 7976 962 
 Tom Edwards                                     3460                        791 
================================  ===================  ========================= 
                                       +44 (0)20 7004           +44 (0) 7970 778 
 James Flanagan                                  3129                        952 
================================  ===================  ========================= 
 
   Media 
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                                       +44 (0)20 7004 
 Sean Kemp                                       3149        +44 (0) 7960 012356 
================================  ===================  ========================= 
                                         +44 (0) 1926 
 Gemma Stokes                                  655272        +44 (0) 7974 198333 
================================  ===================  ========================= 
 
   Teneo Blue Rubicon 
================================================================================ 
                                       +44 (0)20 7420 
 Charles Armistead                               3199 
================================  ===================  ========================= 
 Conference call details 
 An analyst presentation will be held at the London Stock Exchange, 
  10 Paternoster Square, London EC4M 7LS at 09:15 (BST) today. There 
  will be a live webcast of the results presentation available to view 
  at investors.nationalgrid.com. A replay will be available soon after 
  the event ends. 
 
  Live telephone coverage of the analyst presentation at 09:15 
================================================================================ 
 UK dial in numbers                +44 (0) 203 037 9315 
                                    +44 (0) 800 368 2276 (UK toll free) 
================================  ============================================== 
 US dial in numbers                +1 866 966 5335 (US toll free) 
                                    +1 212 999 6659 (New York) 
================================  ============================================== 
 Password                          National Grid 
================================  ===================  ========================= 
 
   Twitter: Follow our investor updates @grid_media 
   National Grid image library available at http://media.nationalgrid.com/ 
 
   The 2018 Annual Report and Accounts (ARA) is expected to be publicly 
   available on 4 June 2018. You can view or download the ARA from National 
   Grid's website at investors.nationalgrid.com or request a free printed 
   copy by contacting investor.relations@nationalgrid.com 
 

Use of Alternative Performance Measures

Throughout this release we use a number of alternative (or non-IFRS) and regulatory performance measures to provide users with a clearer picture of the regulated performance of the business. This is in line with how management monitor and manage the business day-to-day. Further detail and definitions for all alternative performance measures are provided on page 39.

2017/18 OVERVIEW

A year of significant progress and increased investment

National Grid continued to deliver strong operational performance for customers throughout the year with high standards of network availability and reliability, reflecting the benefit of the Group's disciplined investment in new infrastructure.

Our safety and reliability performance remains core and last year we made further progress evolving our safety plans. We have consistently delivered on these plans which has enabled us to achieve an employee lost time injury frequency rate of 0.10[3], a level that is consistent with world-class safety performance.

In the year we also delivered an increased level of investment in critical infrastructure, investing GBP4.3 billion, an increase of 14% at constant currency[4]. The capital spend, when combined with RPI inflation, drove asset growth of 6% which we achieved whilst maintaining a strong Return on Equity at 12.3% for the Group.

The reshaping of the business has continued, underpinning our objective of a portfolio that can grow sustainably. In May, we announced an agreement on the potential sale of the remaining 25% stake we hold in Cadent with Quadgas. The terms of the agreement are broadly similar to the 14% option agreed as part of the original sale, with the put and call option expected to be exercised between March and October 2019. We expect the cash proceeds from the potential sale of the 25% to be approximately GBP1.2 billion, to be retained in the business to help deliver our growth strategy.

Significant operational and financial progress in the US

Our US business delivered another year of improved performance in 2017/18 with strong financial and operational performance in a regulatory environment that is supporting strong asset growth.

We faced a challenging winter with major storms across all our jurisdictions. In October, we had to restore power to over 530,000 customers following one of the most severe storms in recent years. In March, we had three back-to-back Nor'Easters, and our crews worked round the clock restoring the vast majority of customers in each of the storms within 72 hours. The majority of the restoration costs of GBP142 million will be recovered via our existing regulatory mechanisms.

A key commitment was to continue our recent trend of improved returns with a goal to deliver 90% of the allowed Return on Equity for fiscal year 2017/18. We achieved more than this, delivering 95% of our allowed Return on Equity whilst also delivering strong rate base growth of 7.4% in the US.

During the year, Massachusetts Electric, KEDNY and KEDLI all operated under new rates, and we also completed a successful rate case for Niagara Mohawk (NiMo) with new rates in effect from 1 April 2018. The NiMo agreement, which covers $6.1 billion of rate base, allows a Return on Equity of 9.0%, and $2.5 billion of capital investment over three years.

In November, we submitted rate cases for our Massachusetts Gas and Rhode Island businesses, and expect to have updated rates in place by October 2018. Both filings are progressing well, with the evidentiary hearing for Massachusetts Gas due to conclude later this month and the same hearings for Rhode Island starting in June. With the completion of these rate filings we will have new rates for our entire US rate base, contributing to improvements in performance and allowing us to achieve returns as close to the allowed level as possible.

In December 2017, US tax reform was announced. Tax is a pass-through cost, therefore the reduction in the corporation tax rate from 35% to 21% will be significantly beneficial for customers and economically neutral for utilities. However, there will be some implications on cashflows resulting from lower bill collections, as there is little or no offset in cash tax paid due to our current net operating loss position for the purposes of calculating taxable profits in the US. To date, we reduced our revenue requests by $180 million across the three operating companies that were undergoing rate filings at the time the legislation was enacted (NiMo, Massachusetts Gas, Rhode Island) as well as for our FERC businesses. We remain in discussion with regulators for the remaining US businesses. In addition, we expect to return $2 billion of existing deferred tax liabilities over 20 to 30 years, which represents amounts previously collected from customers based on the higher rate of 35%. For further detail please refer to page 29.

With increased levels of investment in the US we have established a capital delivery centre of excellence, similar to that established in the UK in 2013, to ensure the efficient delivery of our capital programme. This function is already having an impact on helping the US to deliver on certain construction projects, such as the Metropolitan Reliability Infrastructure project, which is a $280 million, five-year development running through the heart of Brooklyn, New York. We are ahead of the initial build schedule, and when complete this project will significantly improve the reliability of our network in this congested part of our service territory.

Solid UK performance

Both our UK electricity and gas transmission businesses continued to deliver high levels of performance in 2017/18.

In the five years since RIIO was introduced, we have generated approximately GBP540 million of customer savings which will help to reduce bills over a number of years. In 2017/18, we delivered 200 bps of outperformance through efficiency and performance optimisation. We completed the first phase of the London Power Tunnels generating around GBP80 million of efficiency savings. This is a significant landmark in re-wiring the capital to provide sufficient resilience and capacity as London continues to grow.

In March, Ofgem launched their framework consultation for RIIO-T2, which is another important step in the process leading to a new price control in April 2021. We have recently responded to the Consultation document which contained a wide range of options. Our key focus over the next three years is to ensure that the final package is one that provides an appropriate balance between risk and reward, drives innovation and efficiency through incentivisation, ensures financeability of our networks and benefits all parties through improved affordability. The next step will be Ofgem's decision on the framework this summer, and the publication in the autumn of the methodology for the sector-specific price controls.

In January, Ofgem published their 'minded-to' position on the Hinkley-Seabank connection, which represents almost GBP800 million of capital investment. We were disappointed with the financial parameters for the project proposed and submitted a response to Ofgem, as did other industry participants. Whilst the annualised capex is relatively small we did not view Ofgem's position as one that fairly balances the risk and reward for this complex project. Ofgem is expected to announce its decision on this consultation in the summer, after which we will consider all options available to us.

Finally, last August we received clarity on the role of the Electricity System Operator (ESO). Work is underway to legally separate the ESO and this is expected to complete by April 2019.

Progress in National Grid Ventures

National Grid Ventures delivered a solid performance in 2017/18, with good progress on the interconnector projects.

On our Nemo project, the electricity link between the UK and Belgium, we have laid 80% of the 140 kilometre cable and the project is on plan to be operational in FY19. The North Sea Link (NSL) project is due to be operational in FY22. We have started cable laying from the UK end and recently began construction on convertor stations. Work has also started on the second French interconnector with the convertor station construction beginning summer 2018/19, and the link expected to be operational in FY21.

Property results continue to improve

The Property business delivered a higher level of operating profit at GBP84 million with further sales in the year, most notably our Staines and York sites. In March this year, St. William, our joint venture with the Berkeley Group, reached the top floor of its first building at the Prince of Wales Drive site in Battersea. This is a significant milestone for the scheme which will deliver almost one thousand new homes in London when completed.

Group RoE of 12.3%

Group Return on Equity of 12.3% (2016/17: 11.7%) was 60 bps higher than last year, primarily driven by improved US revenues. In the UK, the regulated businesses delivered returns of 12.1%, including an assumption of 3% long-run average Retail Price Index (RPI) inflation. US Return on Equity, at 95% of the allowed return, increased to 8.9% reflecting a full year of new rates in three of our US businesses and operational efficiencies. National Grid Ventures and Other activities delivered a solid performance and operated in line with expectations.

GROWTH AND VALUE ADDED

A balanced portfolio to deliver asset and dividend growth

National Grid aims to provide best value to shareholders through maintaining a portfolio of businesses that offer an attractive combination of growth and cash returns.

Our focus has been to deliver 5-7% asset growth assuming long-run average UK RPI inflation of 3%. Compared to our recent rate of around 5%, the Group is now entering a period of stronger growth. We expect asset growth to be sustained at the top end of the 5-7% range for the medium term, and of at least 7% in the near term. This is being driven by:

   --     The sale of our UK Gas Distribution stake reshaping the portfolio towards higher growth; 
   --     The visibility of US growth due to the successful rate filings; 
   --     The investment in interconnectors in NG Ventures 

Efficient capital structure to fund stronger growth

We have a strong balance sheet and an efficient capital structure which underpins the effective financing of the Company's growing investment programme. We expect to finance this higher rate of growth through a combination of:

-- internally generated equity capital, delivered through strong returns performance in the UK and US, including from operating cost efficiencies and faster recovery of regulatory assets through rate filings and re-openers;

   --     cash received from the company's disposal of the remaining 39% shareholding in Cadent; and 

-- additional capital generated through take up of the scrip dividend option, which we put in place to support the business in periods of higher growth.

In light of this higher growth we do not expect to buy back scrip issuances in FY19 and FY20, unless we have higher than anticipated balance sheet capacity.

We believe that this high quality growth will generate attractive returns for our shareholders and underpin our long-term investment proposition of sustainable asset and dividend growth.

GBP4.3 billion of Capital Investment in 2017/18, 14% higher at constant currency

We continued to make significant investments in critical energy infrastructure during 2017/18. Total capital investment across the Group was GBP4,251 million, an increase of GBP534 million (14%) at constant currency, compared to the prior year.

 
 Year ended 31 March                 At actual exchange 
  Group Capital Investment                  rates              At constant currency 
                                 -------------------------  ------------------------- 
 (GBPm)                            2018    2017   % change    2018    2017   % change 
------------------------------   ------  ------  ---------  ------  ------  --------- 
  UK Electricity Transmission       999   1,027        (3)     999   1,027        (3) 
  UK Gas Transmission               310     214         45     310     214         45 
  US Regulated                    2,424   2,247          8   2,424   2,113         15 
  NG Ventures and other 
   activities(1)                    518     374         39     518     363         43 
  Group Capital Investment        4,251   3,862         10   4,251   3,717         14 
 ------------------------------  ------  ------  ---------  ------  ------  --------- 
 

(1) NG Ventures and other activities capital investment includes equity and financing in joint ventures and associates but excludes GBP19m and GBP10m equity contribution to St William property joint venture for 2018 and 2017 respectively.

The UK regulated transmission businesses together invested a total of GBP1,309 million in the year, GBP68 million higher than the prior year. This reflects increased spend on the Gas Transmission project under the Humber Estuary and greater levels of asset health activity to maintain safe and reliable networks. Lower investment in Electricity Transmission reflects a combination of reduced spend on the Western HVDC Link and completion of the first phase of the London Power Tunnels.

In the US, we achieved record levels of infrastructure investment reaching a total of GBP2,424 million in the Regulated businesses, an increase of GBP311 million over 2016/17 at constant currency. This includes higher spend in KEDNY, Massachusetts Electric and Massachusetts Gas. We expect to invest $10 billion in our jurisdictions over the next three years, 90% of which is already reflected in our rate plans. Rate case outcomes for our Massachusetts Gas and Rhode Island Gas and Electric businesses, expected by October 2018, should further support the required investment to strengthen and modernise our networks. This progress has contributed significantly to the strong growth rates we are seeing now and in the medium term across our US business.

Investment in National Grid Ventures and Other activities increased by GBP155 million to GBP518 million on a constant currency basis. This reflected the start of construction on IFA2, and increased investment in Nemo which is on schedule.

Achieved asset growth of 6% compared to 5% last year

During 2017/18 our combined regulated asset base and NG Ventures and Other businesses invested capital grew by GBP2.0 billion or 6% on a constant currency basis, compared to an increase of 5% in the prior year.

UK RAV growth was 4.5% reflecting the continued consistent level of investment and higher levels of inflation during the year. Growth in our US rate base of 7.4% was driven by increased levels of investment offset by depreciation, deferred tax, and timing over recoveries.

 
 Year ended 31 March                           At constant 
  Annual asset growth (continuing                currency 
  operations) 
 (GBPm)                                  2018   2017(2)   % Change 
----------------------------------    -------  --------  --------- 
 UK RAV(1)                             19,059    18,234          5 
 US rate base                          14,762    13,751          7 
------------------------------------  -------  --------  --------- 
 Total RAV and rate base               33,821    31,985          6 
 NG Ventures and Other businesses       2,167     1,984          9 
------------------------------------  -------  --------  --------- 
 Total                                 35,988    33,969          6 
------------------------------------  -------  --------  --------- 
 
 

(1) UK RAV excludes Cadent investment.

(2) 2017 represented to include opening balance adjustments following the completion of the regulatory pack process in 2017.

Value Added of GBP2.0 billion, driven by asset growth

The solid financial performance in the year is reflected in the Value Added metric. This metric reflects the key components of value delivery to shareholders, being the dividend and growth in the value of National Grid's assets, net of growth in net debt. The Value Added per share measure also reflects the funding of this growth and any dilution of the equity investment through, for example, scrip dividend take up. Value Added in the year was GBP2.0 billion or 57.9p per share.

 
 Value Added                                                       Change 
  (GBPm constant currency) 
---------------------------------------  -------  -------  --------------------- 
                                            2018     2017   2017/18   2016/17(1) 
---------------------------------------  -------  -------  --------  ----------- 
 UK RAV(2)                                19,059   18,234       825        1,066 
 US rate base                             14,762   13,751     1,011          827 
 NG Ventures and Other businesses          2,167    1,984       183          230 
---------------------------------------  -------  -------  --------  ----------- 
 Total                                    35,988   33,969     2,019        2,123 
 UK other regulated assets/liabilities     (519)    (479)      (40)        (392) 
 US other regulated assets/liabilities     1,921    1,487       434           18 
 Other                                     (343)    (260)      (83)            - 
 Total group regulated and other 
  assets                                  37,047   34,717     2,330        1,749 
 
 Dividend/share repurchase in 
  the year                                                    1,494        1,652 
 Movement in Net Debt and Goodwill(3)                       (1,820)      (1,460) 
 Value Added                                                  2,004        1,941 
 Value Added per Share(4)                                     57.9p        51.6p 
 

(1) 2016/17 value added calculation includes 100% share of UK Gas Distribution.

(2) 2017 Restated for opening balance adjustments following the completion of the regulatory reporting pack process in 2017.

(3) 2016/17 net debt and goodwill movement excludes the GBP9,871m reduction in net debt arising on the sale of UK Gas Distribution. 2017/18 net debt and goodwill movement excludes GBP4.0bn relating to the return of capital resulting from the sale of a stake in UK Gas Distribution.

(4) Based on 3,461m weighted average shares for 2017/18 (2016/17: 3,763m).

Value Added was higher than 2016/17, primarily due to higher operational returns on US regulated assets.

Of the GBP2,004 million Value Added in 2017/18, GBP1,316 million was paid to shareholders as cash dividends, and GBP178 million as share repurchases (offsetting the scrip issuance during the year) and GBP510 million was retained in the business.

FINANCIAL STRENGTH

Credit metrics remain strong, maintain A- rating

Our overall Group credit rating remains at A-/A3 (S&P/Moody's). Group gearing, measured as net debt as a proportion of total regulatory value and other business invested capital, was 64% at 31 March 2018, compared with 62%, at constant currency, at 31 March 2017. Gearing remains at an appropriate level for the current credit rating. Retained cash flow (RCF)/adjusted net debt was 10.6% excluding one-off costs relating to the disposal of UK Gas Distribution, above the 9% level currently indicated by Moody's as consistent with an A3 rating.

Dividend increase of 3.75% recommended for 2017/18

Our dividend policy aims to grow the ordinary dividend per share at least in line with the rate of RPI inflation each year for the foreseeable future.

The Board has recommended an increase in the final dividend to 30.44p per ordinary share ($2.0606 per American Depositary Share) which will be paid to shareholders on the register as at 1 June 2018. If approved, this will bring the full year dividend to 45.93p per ordinary share, an increase of 3.75% over the 44.27p per ordinary share in respect of the financial year ending 31 March 2017. This 3.75% rise is in line with the increase in UK RPI for the twelve months to 31 March 2018 as set out in the policy announcement of 28 March 2013.

During 2017/18 we repurchased 23 million shares issued under the scrip programme reducing the dilution associated with the programme. A scrip dividend alternative will again be offered in respect of the 2017/18 final dividend.

Board changes

In May 2018, we announced that Andrew Bonfield, Finance Director, will step down from his role with effect from the end of the Annual General Meeting on 30 July. Andy Agg, Group Tax and Treasury Director, will hold the position on an interim basis while the Board looks to identify a permanent successor. In May, we also announced that Pierre Dufour would be stepping down as Non-executive Director of the Board with effect from the end of the Annual General Meeting.

In April 2018, we announced the appointment of Amanda Mesler as a Non-executive Director of the Board with effect from 17 May 2018. On appointment, Amanda joins the Audit, Finance and Nominations Committees of National Grid. As previously announced, Ruth Kelly stood down as a Non-Executive Director of the Board at the end of the 2017 Annual General Meeting on 31 July 2017.

OUTLOOK

Following the agreement of a number of regulatory filings, good financial performance is expected to continue in the US business. The UK business remains on track to deliver outperformance as expected. The contribution from National Grid Ventures and Other activities is expected to be slightly higher.

Looking ahead, National Grid expects growth at the top end of the 5-7% range for the medium term, and at least 7% in the near term, which we will deliver with continued capital discipline and improved efficiency across the Group. The business is well positioned with a balanced portfolio and an efficient balance sheet that underpins asset and dividend growth.

2018/19 TECHNICAL GUIDANCE

The outlook and technical guidance contained in this statement should be reviewed, together with the forward looking statements set out in this release, in the context of the cautionary statement.

UK Electricity Transmission

Net Revenue (excluding timing) is expected to increase by approximately GBP80 million compared to 2017/18, reflecting inflationary increases on base revenues and revised system operator incentives.

Totex outperformance is expected to reduce marginally compared with 2017/18, offset by improved incentive performance. Overall Return on Equity outperformance is expected to remain at the top end of the 200 - 300 bps range.

UK Gas Transmission

Net Revenue (excluding timing) is expected to decrease, with approximately GBP160 million of lower revenue allowances compared to 2017/18, primarily due to the return of revenues relating to the Avonmouth project through the annual MOD adjustment[5].

Totex and incentive performance are both expected to be similar to the prior year. As a result Return on Equity is expected to be around the allowed level in 2018/19.

UK Timing

Revenues will be impacted by timing of recoveries including impacts from prior years. Electricity Transmission is expected to under-recover by around an additional GBP90 million compared to 2017/18. Gas Transmission timing is expected to under-recover at a similar level to 2017/18.

US Regulated operations

Net Revenue (excluding timing) is expected to increase by about GBP80 million, with the full year benefit of new rate case filings and capex trackers, partially offset by the impact of tax reform and the adoption of IFRS15. After inflationary impacts on operating costs, we expect underlying operating profit to be relatively flat.

Return on Equity for overall US Regulated operations is expected to remain at a similar level to the performance in 2017/18.

US Timing

US in-year timing is heavily influenced by volumetric impacts and commodity prices, particularly over the last quarter of the financial year. However, we expect payments of previously over-recovered NYSERDA balances to reduce revenue by approximately $100 million during 2018/19.

National Grid Ventures and Other activities

Revenue is expected to increase year-on-year, mainly due to the forecast sale of the Fulham site to St William in our Property business, subject to receiving appropriate planning consents. Profits from the Property business are expected to be almost double last year's level as a result. This increase will be partially offset by lower revenues at Interconnexion France-Angleterre (IFA) and fewer domestic meters in the Metering business.

Joint Ventures and Associates

Our share of the Headline profit after tax of joint ventures and associates, excluding Cadent, is expected to be broadly in line with the prior year.

Interest and Taxation

Net finance costs in 2018/19 are expected to increase, driven by higher average net debt and the non-repeat of gains on the disposal of available for sale investments, partially offset by lower RPI.

For the full year 2018/19, the effective tax rate, excluding the share of joint venture and associate post-tax profits, is expected to reduce to around 21%.

Changes to accounting standards

No material impact on EPS is expected following the adoption of IFRS9 and IFRS15 in 2018/19.

Investment, Growth and Net Debt

Overall Group capital investment for 2018/19 is expected to be at a similar level to the GBP4.3 billion of investment in 2017/18.

Depreciation is expected to increase, reflecting the impact of continued high levels of capital investment.

Operating cashflow generated from continuing operations is expected to reduce, reflecting the collection of lower tax allowances in US revenues.

Net debt is expected to increase from GBP23.0 billion at 31 March 2018 as a result of ongoing business requirements by approximately GBP2.5 billion.

Weighted average number of shares (WAV) is expected to reduce reflecting the full year impact of the share consolidation and share buyback programme following the distribution of the UK Gas Distribution net sale proceeds during 2017/18. We expect the share buyback and a full year's impact of the share consolidation to have the effect of reducing WAV by approximately 70 million compared to 2017/18. This would be partially offset by the impact of any shares issued via scrip.

FINANCIAL REVIEW

Unless otherwise stated, all financial commentary in this release is given on a headline basis at actual exchange rates for continuing operations. The use of these alternative and regulatory performance (or non-IFRS) measures is to provide users with a clearer picture of the regulated performance of the business. This is in line with how management monitor and manage the business day-to-day. For definitions and metrics see pages 38 to 46 of this statement.

Profits and earnings from continuing operations

 
                                                         Statutory                Headline 
                                                  -----------------------  ----------------------- 
At actual exchange rates                           2018     2017   change   2018     2017   change 
 (GBPm)                                            GBPm     GBPm        %   GBPm     GBPm        % 
UK Electricity Transmission                       1,041    1,361     (24)  1,041    1,372     (24) 
UK Gas Transmission                                 487      507      (4)    487      511      (5) 
US Regulated                                      1,734    1,278       36  1,698    1,713      (1) 
NG Ventures and Other                               231       62      273    231      177       31 
Total operating profit                            3,493    3,208        9  3,457    3,773      (8) 
Net finance costs                                 (745)  (1,087)       31  (974)  (1,029)        5 
Share of post-tax results of JVs and associates    (40)       63    (163)    167       63      165 
------------------------------------------------  -----  -------  -------  -----  -------  ------- 
Profit before tax                                 2,708    2,184       24  2,650    2,807      (6) 
Tax[6]                                              884    (374)      336  (589)    (666)       12 
------------------------------------------------  -----  -------  -------  -----  -------  ------- 
Profit after tax                                  3,592    1,810       98  2,061    2,141      (4) 
------------------------------------------------  -----  -------  -------  -----  -------  ------- 
 
EPS (pence)                                       103.8     48.1      116   59.5     56.9        5 
------------------------------------------------  -----  -------  -------  -----  -------  ------- 
 
 
 
                                               Underlying          Underlying (including Cadent pro forma) 
                                         ----------------------  ------------------------------------------- 
 
At actual exchange rates                  2018     2017  change         2018             2017         change 
 (GBPm)                                   GBPm     GBPm       %         GBPm             GBPm              % 
---------------------------------------  -----  -------  ------  -----------  ---------------  ------------- 
UK Electricity Transmission              1,055    1,235    (15)        1,055            1,235           (15) 
UK Gas Transmission                        505      449      12          505              449             12 
US Regulated                             1,704    1,514      13        1,704            1,514             13 
NG Ventures and Other                      231      177      31          231              177             31 
Total operating profit                   3,495    3,375       4        3,495            3,375              4 
Net finance costs                        (974)  (1,029)       5        (974)          (1,000)              3 
Share of post-tax results of JVs and 
 associates                                167       63     165          167              207           (19) 
---------------------------------------  -----  -------  ------  -----------  ---------------  ------------- 
Profit before tax                        2,688    2,409      12        2,688            2,582              4 
Tax                                      (598)    (547)     (9)        (598)            (553)            (8) 
---------------------------------------  -----  -------  ------  -----------  ---------------  ------------- 
Profit after tax                         2,090    1,862      12        2,090            2,029              3 
---------------------------------------  -----  -------  ------  -----------  ---------------  ------------- 
 
EPS (pence)                               60.4     49.5      22         60.4             58.6              3 
---------------------------------------  -----  -------  ------  -----------  ---------------  ------------- 
 
 
 
Profits and earnings from continuing operations 
                                    Headline              Underlying         Underlying (including Cadent pro forma) 
                              ---------------------  --------------------  ------------------------------------------- 
At constant currency           2018   2017   change   2018   2017  change          2018         2017            change 
 (GBPm)                        GBPm   GBPm        %   GBPm   GBPm       %          GBPm         GBPm                 % 
UK Electricity Transmission   1,041  1,372     (24)  1,055  1,235    (15)         1,055        1,235              (15) 
UK Gas Transmission             487    511      (5)    505    449      12           505          449                12 
US Regulated                  1,698  1,611        5  1,704  1,424      20         1,704        1,424                20 
NG Ventures and Other           231    181       28    231    181      28           231          181                28 
Total operating profit        3,457  3,675      (6)  3,495  3,289       6         3,495        3,289                 6 
Net finance costs             (974)  (984)        1  (974)  (984)       1         (974)        (955)               (2) 
Share of post-tax results of 
 JVs and associates             167     62      169    167     62     169           167          206              (19) 
----------------------------  -----  -----  -------  -----  -----  ------  ------------  -----------  ---------------- 
Profit before tax             2,650  2,753      (4)  2,688  2,367      14         2,688        2,540                 6 
----------------------------  -----  -----  -------  -----  -----  ------  ------------  -----------  ---------------- 
 

Definitions

In considering the financial performance of our business and segments, we use various adjusted profit measures in order to aid comparability of results year-on-year. The various measures are explained below and reconciled on pages 38 to 46.

Headline (also referred to as 'Adjusted') - In considering the financial performance of our businesses and segments, we analyse each of our primary financial measures of operating profit, profit before tax, and profit for the year attributable to equity shareholders and EPS into two components. The first of these components is referred to as 'Headline' or alternatively as a 'business performance' measure. This is the measure used by management that forms part of the incentive target set annually for remunerating certain Executive Directors. Headline results exclude exceptional items and remeasurements. These items are reported collectively as the second component of the financial measures. Note 3 on page 57 explains in detail the items which are excluded from our adjusted profit measures.

Underlying - This is one of the measures used by management to assess the performance of the underlying business. This measure is based on the Headline figure, but excludes the impact of timing in each year and major storms experienced during 2017/18. The impact of major storms is adjusted for when the total impact in any one year is sufficiently large. Prior to this year, the last storms that were excluded from Headline performance were Superstorm Sandy and the Nemo snow storm, both of which occurred in the year ended 31 March 2013.

Underlying (including Cadent pro forma) - This measure is used in the Annual Report to aid comparability year-on-year by estimating what our Underlying results would have looked like had the disposal of a 61% interest in our UK Gas Distribution business occurred at the start of the comparative period rather than at 31 March 2017. The basis used for the Cadent pro forma is explained in more detail on page 66-67.

Constant currency - The Headline, Underlying, and Underlying (including Cadent pro forma) profits for prior periods are also shown on a constant currency basis to show the year-on-year comparisons excluding any impact of foreign currency movements. This basis is explained in more detail on page 39.

Operating profit and controllable costs

Statutory operating profit was GBP3,493 million, up GBP285 million (9%) compared with last year at actual exchange rates. Headline operating profit was GBP3,457 million, down GBP316 million (8%) compared with last year at actual exchange rates. The year-on-year movement in exchange rates had a GBP98 million negative impact on Headline operating profit. On a constant currency basis, Headline operating profit was down GBP218 million (6%). This included an adverse year-on-year timing movement of GBP282 million, at constant currency. In addition, the US Regulated business incurred GBP142 million of major storm costs in 2017/18.

 
 Over/(under)-recovery                   Year ended 31 March 
  (GBPm - 2017 at constant currency) 
------------------------------------- 
                                             2018        2017 
-------------------------------------  ----------  ---------- 
 Balance at start of year                     394          14 
 Restatements(1)                            (219)         (6) 
-------------------------------------  ----------  ---------- 
 Balance at start of year (restated)          175           8 
 In-year over/(under)-recovery                104         386 
-------------------------------------  ----------  ---------- 
 Balance at end of period                     279         394 
-------------------------------------  ----------  ---------- 
 
 Headline operating profit - 
  continuing                                3,457       3,675 
 Adjust for timing differences              (104)       (386) 
 Adjust for major storms                      142           - 
-------------------------------------  ----------  ---------- 
 Underlying operating profit                3,495       3,289 
-------------------------------------  ----------  ---------- 
 

(1) Restated to reflect finalisation of UK and US timing balances and revised estimate of US timing balances

Underlying operating profit (excluding timing and major storms) increased by GBP206 million (up 6%) on a constant currency basis.

Underlying operating profit from regulated activities increased by GBP156 million on a constant currency basis. Net regulated revenues excluding timing increased by GBP302 million at constant currency. Regulated controllable costs increased by GBP43 million at constant currency, in part driven by increased output requirements associated with new rate cases in the US and increased employee costs in the UK, partly offset by the non-recurrence of the 2016/17 write off of prior-year US capital costs. Post-retirement costs were GBP4 million higher and bad debts decreased by GBP13 million. Depreciation and amortisation in our regulated businesses increased by GBP93 million, reflecting our continuing investment programme and growing asset base. Other regulated costs increased by GBP19 million including higher US property taxes.

Other activities and National Grid Ventures contributed GBP50 million more to Underlying operating profit than last year, on a constant currency basis. The profitability of our Property business improved as a result of increased site sales, and we benefited from a lower level of business change costs compared to the one-off costs incurred last year. This was partly offset by reductions in IFA revenues due to lower price arbitrage between the UK and mainland Europe and lower metering revenues as our existing meters are replaced by smart meters.

Finance costs

Statutory net finance costs were GBP745 million, GBP342 million lower than 2016/17.

Headline net finance costs were GBP974 million, GBP55 million lower than 2016/17 at actual exchange rates and GBP10 million lower than 2016/17 at constant currency, reflecting increased income from captive insurance company financial asset sales, a gain on the sale of our investment in Dominion and income from our loan to Cadent. This was mostly offset by higher interest on our inflation-linked debt, reflecting higher UK RPI inflation.

The continuing effective interest rate on Treasury managed debt for the year was 4.6% compared with 3.9% in 2016/17.

Profit before tax and taxation

On a statutory basis, Group profit before tax was GBP2,708 million with a tax credit of GBP884 million. This reflects a GBP1,510 million tax credit relating to the reduction in the US federal corporation tax rate (deferred tax impact).

The Group's Headline share of post-tax results from joint ventures and associates was GBP167 million, up GBP105 million from 2016/17 at constant currency reflecting our share of the post-tax results of Cadent.

Headline profit before tax was down 6% at actual exchange rates to GBP2,650 million. Excluding the impact of timing and major storms, profit before tax of GBP2,688 million was up 12% on the prior year.

The headline tax charge on continuing profits was GBP589 million, GBP77 million lower than 2016/17 at actual exchange rates. This principally reflects decreased operating profits from lower timing over recoveries and reductions in UK and US corporation tax rates. These tax rate reductions, partially offset by a higher proportion of US profits compared to prior year, have driven a lower effective tax rate[7] of 23.7% (2016/17: 24.3%).

Total corporation tax paid in the UK in 2017/18 decreased by GBP92 million to GBP37 million primarily reflecting refunds received in relation to prior years.

Other earnings metrics, EPS, exceptional and statutory earnings

Statutory basic earnings per share for continuing operations were 103.8p compared with 48.1p last year. The increase reflects the benefit of a GBP1.5 billion credit relating to the reduction of the US federal tax rate and remeasurement gains on financial instruments, partially offset by a net GBP103 million charge arising in relation to our retained investment in Quadgas Holdco Limited.

Earnings attributable to non-controlling interests (minority interests) were GBP1 million (2016/17: nil).

Continuing earnings before exceptional items and remeasurements (Headline earnings) attributable to equity shareholders were GBP2,060 million, down GBP81 million compared with 2016/17. Headline earnings per share increased by 5% to 59.5p from 56.9p last year.

Underlying earnings attributable to equity shareholders were GBP2,089 million, up GBP227 million compared with 2016/17, and underlying earnings per share increased by 22% year-on-year to 60.4p.

Exceptional items and remeasurements increased statutory earnings from continuing operations by GBP1,531 million after tax. A detailed breakdown of these items can be found on page 57. After these items and non-controlling interests, statutory earnings attributable to equity shareholders were GBP3,591 million.

Cash flow

Cash generated from continuing operations was GBP4,702 million, GBP250 million higher than 2016/17, principally reflecting a lower pension deficit payments, partly offset by lower Headline operating profit (before exceptional items).

Funding and Net Debt

Net debt as at 31 March 2018 increased by GBP3.7 billion to GBP23.0 billion (2017: GBP19.3 billion).

The increase in net debt was driven by increased levels of capital investment and the return of over GBP4 billion to shareholders relating to the proceeds from last year's sale of UK Gas Distribution, partly offset by the impact of a weaker US dollar on the translation of our US dollar-denominated debt.

As at 31 March 2017 the Group maintained approximately $24.6 billion of its total financial liabilities denominated in US dollars as a substantial hedge of foreign exchange movements in the value of its US businesses. As a result, the movements resulting from the weakening of the US dollar against the pound decreased net debt by around GBP2.1 billion compared with a year ago.

Excluding the impact of exchange movements, the return of capital relating to the UK Gas Distribution sale and other residual sale-related cash flows, net debt increased by GBP1.6 billion comprising a net GBP4.0 billion inflow from operating, interest and tax cash flows and dividends from associates and joint ventures, offset by ordinary dividends and scrip share buybacks of GBP1.5 billion and capital investment of GBP4.1 billion.

During the year, National Grid raised over GBP1.8 billion of new long-term debt through eight capital markets transactions. This funding was primarily for the US business, at both holding company and operating company levels. Operating company funding included bond issues for our Massachusetts and New York gas businesses, as well as New England Power, our US electricity transmission business, which issued a debut $400 million bond and achieved a 3.80% coupon, the group's lowest ever coupon for a 30-year maturity.

The Group has also begun to draw down on $370 million of senior unsecured credit loans with the Swedish and Italian Export Credit Agencies which were signed in September. These facilities were procured in relation to the Group's share of investment in the IFA2 interconnector and provide an attractively priced and diversified source of funding for the Group.

As a result, the Group considers that it is well funded as it enters 2018/19.

The Group's balance sheet remained strong, supporting further investment in new assets during the year. Overall net debt as a proportion of total regulatory value and invested capital in our other businesses at 31 March 2018 was 64%, slightly up on the prior year adjusted for constant currency and the return of capital associated with the UK Gas Distribution sale.

Credit rating metrics as indicators of balance sheet strength remained above the levels indicated by credit rating agencies as appropriate for the current group rating levels. Funds from operations (FFO) to adjusted net debt was 16.4% and RCF to adjusted net debt was 10.6%, excluding one-off costs relating to the disposal of UK Gas Distribution (9.7% including these costs). FFO interest cover was 4.4x compared with 5.0x in 2016/17, above National Grid's target of exceeding 3.0x. Our metrics benefited from the impact of foreign exchange on the closing debt of the Group at 31 March 2018 and a reduction in balance sheet pension deficits.

During the year, Moody's, S&P and Fitch maintained their ratings of National Grid plc on stable outlook. Moody's moved the outlook for the ratings of NiMo, KEDNY and KEDLI to "negative" from "stable", reflecting the potential for lower net cash flows in the short-medium term following US tax reform implementation. Fitch moved their rating of KEDNY from "negative" to "stable".

Pensions

In May 2018, National Grid's Group Pension Trustee entered into a longevity swap with Zurich Assurance Limited, covering more than GBP2 billion of pension liabilities for around 6,000 pensioners and dependants of the National Grid Electricity Group of the Electricity Supply Pension Scheme.

This action has been taken to provide additional security over members' benefits, while making sure National Grid and electricity consumers are protected against the risk of liabilities increasing as a result of scheme members living longer than currently expected.

The removal of longevity risk through this approach is a key part of the ongoing strategy by National Grid and the Group Trustee to manage the pension risk.

BUSINESS REVIEW

In addition to IFRS based profit measures, National Grid calculates a number of additional regulatory performance metrics to aid understanding of the performance of the regulated businesses. These metrics aim to reflect the impact of performance in the current year that is expected to impact future regulatory revenue allowances. This includes the creation of future regulatory revenue adjustment balances and the impact of current year performance on the regulated asset base. These metrics also seek to remove the impacts on current year revenues relating to "catch up" or "sharing" of elements of prior year performance for example the sharing of prior year efficiencies with customers.

These metrics include Return on Equity, Regulated Financial Performance and Regulated Asset Value or Regulated Rate Base. Further detail on these is provided on pages 45 to 46.

 
 Year ended 31 March              Regulatory        Achieved           Base or Allowed 
                                 Debt:Equity     Return on Equity      Return on Equity 
                                  assumption 
                               ------------- 
 %                                                 2018       2017       2018       2017 
-----------------------------  -------------  ---------  ---------  ---------  --------- 
 UK Electricity Transmission           60:40       13.1       13.6       10.2       10.2 
 UK Gas Transmission               62.5:37.5       10.0       10.8       10.0       10.0 
 US Regulated                     avg. 50:50        8.9        8.2        9.4        9.5 
 Group                                             12.3       11.7 
-----------------------------  -------------  ---------  ---------  ---------  --------- 
 

Overall Group Return on Equity was 12.3% (prior year 11.7%).

 
 As at 31 March                       Regulated Asset Value      Total Regulated Assets 
                                           or Rate Base            or Invested Capital 
                                       and Business Invested 
                                              Capital 
 (GBPm, at constant currency)               2018        2017*          2018        2017* 
----------------------------------  ------------  -----------  ------------  ----------- 
 UK Electricity Transmission              13,045       12,479        12,651       12,034 
 UK Gas Transmission                       6,014        5,755         5,889        5,721 
 US Regulated                             14,762       13,751        16,683       15,238 
 NG Ventures and Other activities          2,167        1,984         1,824        1,724 
----------------------------------  ------------  -----------  ------------  ----------- 
 Group                                    35,988       33,969        37,047       34,717 
----------------------------------  ------------  -----------  ------------  ----------- 
 

* Restated to include opening balance adjustments following the completion of the regulatory reporting process in 2017.

Total Group regulated and other assets grew 7% at constant currency, including favourable movements in assets outside of rate base, in part driven by current year timing over recoveries. Excluding assets outside regulated assets, which principally comprise UK timing differences and US capital work in progress, group regulated and other assets grew by 6%.

UK ELECTRICITY TRANSMISSION

2017/18 Overview

UK Electricity Transmission performed well in 2017/18, maintaining a focus on safe, reliable, innovative and efficient operations.

We achieved an excellent network reliability of 99.999984% during the year, while maintaining a good safety performance. We also met our customer satisfaction targets, where we achieved a score of 7.7 against a baseline target of 6.9, set by Ofgem for reward or penalty under RIIO.

The business continued to deliver complex engineering projects of all sizes across the UK. Delivering these safely, on time and to budget is something that is fundamental to the success of our business, and we remain committed to delivering improvements and increased productivity year-on-year.

In February 2018, HRH The Prince of Wales and HRH The Duchess of Cornwall opened the London Power Tunnels. This project, costing close to GBP1 billion, includes new substations in Highbury and Kensal Green, and is part of the most significant investment into London's electricity transmission system since the 1960s. We used a number of new approaches in this project, including recycling 98% of spoil removed from the tunnels, designing a state-of-the-art substation at Highbury, and a development to accommodate new business units and affordable homes. As a result, we delivered efficiencies of 7% on the project.

In December 2017 we started to energise the Western Link project, our billion pound joint venture with ScottishPower Transmission that will bring renewable energy from Scotland to homes and businesses in England and Wales. During testing a fault was detected which is currently being repaired. Before commissioning, the link had been operating at a capacity of up to 1125MW and is expected to increase to its full capacity of 2250MW following the completion of full commissioning over the next few months.

We also made good progress on the work to create a legally separate ESO, in line with regulatory guidance. We remain on track to separate the ESO by 1 April 2019.

In late February, adverse weather affected the UK leading to high demand for energy on the system. Our networks performed strongly and maintained secure supplies of electricity. In addition, the ESO continued to balance the network to maintain security of supply throughout the year.

Regulated Returns and Financial Performance reflect efficiency and incentive delivery

Return on Equity 290 bps above base levels

Return on Equity for the year, normalised for a long-run inflation rate of 3%, was 13.1% compared with a regulatory assumption, used in calculating the original revenue allowance, of 10.2%. The principal components of the difference are shown in the table below:

 
 Year ended 31 March                                  2018   2017 
                                                            ----- 
    Base return (including avg. 3% long-run 
     inflation)                                       10.2   10.2 
    Totex incentive mechanism                          1.8    1.9 
    Other revenue incentives                           0.4    0.7 
---------------------------------------------------  -----  ----- 
    Return including in year incentive performance    12.4   12.8 
    Pre-determined additional allowances               0.7    0.8 
 Return on Equity                                     13.1   13.6 
---------------------------------------------------  -----  ----- 
 

Return on Equity decreased 50 bps year-on-year, mainly due to the adverse incentive performance for the Balancing Services Incentive Scheme, where the 2017/18 scheme had a lower cap and collar opportunity (+/- GBP10m) than the prior year (+/- GBP30m). The scheme delivered performance of GBP8m for the year, offset by a reduced performance incentive for FY2016 given changes in methodology agreed with Ofgem.

Totex was GBP1.2bn compared with an estimated allowance, adjusted for outputs and phasing of spend, of GBP1.4bn. Our share of this efficiency saving is expected to be GBP87m. Much of this saving is reflected in an estimate of increased performance RAV.

The consistent totex performance in the year principally reflects efficiencies and innovative engineering within the capital investment programme in relation to both load and non-load related projects. We aim to deliver the outputs and essential maintenance required by the RIIO framework in a sustainable and efficient way to deliver best value for consumers and shareholders. Innovative solutions such as those described for London Power Tunnels are essential to achieving this.

The business delivered a broadly consistent level of totex performance and additional allowances to prior year. Stakeholder engagement and customer satisfaction continued to deliver strong performance and we continue to work to identify opportunities for future outperformance across these areas.

Investment activities in 2017/18

Capital investment in UK Electricity Transmission was GBP999m, GBP28m lower than the prior year. The reduction was in part driven by delivered efficiencies, lower spend on significant projects including London Power Tunnels, Wimbledon Substation and Western HVDC Link as these projects neared completion or were completed in the year. This was partially offset by increased spend on overhead lines, including refurbishing the lines between Langage to Landulph and Abham to Exeter, as well as the Richborough to Canterbury upgrade to accommodate the additional capacity that the Nemo interconnector will add to the network when operational in early 2019.

The business continued to seek improved totex efficiency in its investment through a combination of innovation and process simplification. This focus on engineering for best value while maintaining safety standards ensures consumer bills are kept as low as possible and support attractive levels of asset growth through the creation of performance RAV. Overall, investment in the year reflected GBP669m of non-load related investment whilst load related spend was GBP330m.

Regulated Financial Performance up 7% year-on-year

The regulated financial performance calculation adjusts reported operating profit to reflect the impact of the business' regulatory arrangements when presenting financial performance.

Regulated financial performance for UK Electricity Transmission increased to GBP1,262m from GBP1,184m. The year-on-year increase primarily reflects underlying asset growth.

 
 
 Reconciliation of regulated financial               2018 
  performance to operating profit (GBPm)                     2017   % change 
 Operating profit                                   1,041   1,372       (24) 
    Movement in other regulated assets and 
     liabilities                                       51   (288)        118 
    Deferred taxation adjustment                       70      62         13 
     RAV indexation (avg. 3% long-run inflation)              356 
                                                      374                  5 
    Regulatory v IFRS depreciation difference       (377)   (379)          1 
     Fast/Slow money adjustment                                34 
     Pensions                                                (47) 
                                                       69                103 
                                                     (49)                (4) 
    Performance RAV created                            83      74         12 
-------------------------------------------------  ------  ------  --------- 
 Regulated Financial Performance                    1,262   1,184          7 
-------------------------------------------------  ------  ------  --------- 
 

Regulated Financial Position up 5.0%

In the year, RAV grew by 4.7%, a slight decrease on last year's growth rate, reflecting the lower levels of totex than prior periods as large portfolio spend such as London Power Tunnels and Western Link came to completion, partially offset by higher RPI accretion, which at 3.3% was slightly above our long run assumption.

 
                                                   2018     2017 
----------------------------------------------  -------  ------- 
 Opening Regulated Asset Value (RAV)(1)          12,479   11,871 
----------------------------------------------  -------  ------- 
    Asset additions (aka slow money) (actual)       918      944 
    Performance RAV or assets created                83       74 
    Inflation adjustment (actual RPI)               417      375 
    Depreciation and amortisation                 (852)    (800) 
                                                         ------- 
 Closing RAV                                     13,045   12,464 
----------------------------------------------  -------  ------- 
 
 Opening balance of other regulated assets 
  and (liabilities)(1)                            (445)    (129) 
----------------------------------------------  -------  ------- 
    Movement                                         51    (288) 
----------------------------------------------  -------  ------- 
 Closing balance                                  (394)    (417) 
----------------------------------------------  -------  ------- 
 
 Closing Regulated Financial Position            12,651   12,047 
----------------------------------------------  -------  ------- 
 

(1) March 2017 opening balances adjusted to correspond with 2016/17 regulatory filings and calculations

Regulatory and other business developments

In August 2017, we received regulatory clarity on the role of the UK Electricity System Operator (ESO), and work is underway to create a legally separate ESO within National Grid by April 2019.

As highlighted in the 2017/18 Overview, Ofgem issued the framework for the RIIO-T2 consultation process in March 2018. We are supportive of many of the proposals in the consultation document, which maintain key principles which have delivered value for consumers in RIIO-T1. We also welcome Ofgem's proposals on giving consumers a stronger voice, and their thinking is closely aligned with ours, namely to put stakeholder engagement at the heart of the approach to RIIO-T2. We agree with the idea of independently chaired user groups and the engagement these will facilitate with our stakeholders.

We have advocated that positive strong incentives drive innovation, efficiency and performance improvement which benefit consumers through cost reductions and service improvements, and provide opportunities for investors to earn above base returns. On fair returns and financeability, we have supported variable sharing factors but have challenged Ofgem's proposed cost of equity range of 3-5% as too low for the risk of a transmission company and will not offer adequate return for investors. The parameters driving the proposed cost of equity range, in the current consultation document, do not take into account the full range of evidence for Total Market Return (TMR) or beta. We believe that Ofgem should take account of the full range of evidence available, which would increase the range currently contained in the framework document. We would then support narrowing the range, on a sector specific basis, closer to the start of the RIIO-T2 period.

We will continue to work with Ofgem and other stakeholders to explore the options presented, and agree a framework that balances the needs of consumers, investors and other stakeholders. The next step will be Ofgem's decision on the framework this summer and the publication in the autumn of the methodology for the sector-specific price controls.

In January, Ofgem published their 'minded-to' position on the Hinkley-Seabank connection, to which we expressed our disappointment with the financial parameters for the project. We do not support the Competition Proxy Model for the delivery of Hinkley-Seabank because we believe the proposal put forward is flawed and there is no credible basis for concluding that it is in consumers' interest. In our view, the proposed terms have not presented a robust or coherent 'proxy' for competition for a number of reasons, including errors and inconsistencies in the analysis and an unachievable proposed cost of capital based on the implied project cashflows. Hinkley-Seabank is a large individual project which is still subject to risk associated with construction activities.

We believe that in order to ensure timely delivery of this vital connection, continuing under the existing Strategic Wider Works model is in the best interests of consumers, and have engaged with Ofgem to that effect. Depending on Ofgem's final decision we will consider all legal options available to us.

Future activities and outlook

UK Electricity Transmission expects to continue to deliver good returns and asset growth in 2018/19 with opportunities for the business to deliver continued healthy outperformance led by totex and other incentives. The business will continue to focus on using process improvements, efficiency and innovation to deliver the RIIO outputs at the lowest sustainable cash cost, generating savings for consumers and shareholders. The business expects to generate savings from finding new and innovative ways to maintain, repair and replace its assets.

National Grid expects UK Electricity Transmission capital investment in 2018/19 to decrease compared to the 2017/18 levels, reflecting the completion of a number of significant projects in 2017/18. The business expects to deliver growth in RAV, including the benefit of efficiencies, above the rate of inflation in 2018/19.

The majority of our capital expenditure will be non-load related, including the replacement of existing assets, system upgrades and improvements to site safety and visual amenity. The load related spend mainly includes the connection of new generation sources.

APPIX to UK ELECTRICITY TRANSMISSION

Revenue and Costs in 2017/18 on an IFRS basis

On a Headline basis, UK Electricity Transmission operating profit was GBP1,041m, down GBP331m or 24% on the prior year. The principal components of the movement in operating profit are shown below.

 
 Revenue and Costs 
 (GBPm)                                           2018    2017   % change 
----------------------------------------------  ------  ------  --------- 
 Net revenue                                     1,911   2,146       (11) 
 Regulated controllable operating costs          (321)   (286)       (12) 
 Post-retirement costs                            (50)    (43)       (16) 
 Other operating costs and provisions             (24)    (24)          - 
 Depreciation and amortisation                   (475)   (421)       (13) 
----------------------------------------------  ------  ------  --------- 
 Headline operating profit                       1,041   1,372       (24) 
----------------------------------------------  ------  ------  --------- 
 Less: Timing impact                              (14)     137        n/a 
 Underlying operating profit excluding timing    1,055   1,235       (15) 
 
 

Net revenues in the year were lower, reflecting adverse timing impacts and MOD adjustments, lower BSIS incentive performance and lower base allowed revenues, partly offset by the annual RPI revenue uplift.

Regulated controllable operating costs increased by GBP35m, reflecting the additional costs incurred as part of the separation of the ESO, higher headcount, IS costs and inflation. Post-retirement costs increased by GBP7m and other operating costs and provisions were in line with the prior year.

Depreciation and amortisation increased by GBP54m, reflecting investment driven growth in the asset base.

UK GAS TRANSMISSION

2017/18 Overview

In 2017/18, UK Gas Transmission performed in line with expectations with a strong safety performance.

We achieved an excellent network reliability of 99.996151% during the year, although below our target of 100% due to cessation of flow at two National Transmission System (NTS) supply points on a small number of occasions. We also met our customer satisfaction targets, where we achieved a score of 7.6 against a baseline target of 6.9, which is set by Ofgem for reward or penalty under RIIO.

In late February, adverse weather affected the UK, leading to high demand for energy on the system. Our networks performed strongly maintaining secure supplies of gas. As part of our response we issued a Gas Deficit Warning, the first since 2010. This signalled to the market that we required more gas to be made available to keep the system running safely and reliably and is part of our standard approach to balancing supply and demand. This worked effectively, with the market responding promptly to ensure there was sufficient gas during the day to meet demand.

We are gaining more insight into the needs of our customers (and theirs) including the need for greater transparency from us. To address this, our gas transmission business has a new online connections platform. We are also working with customers to identify a suitable pilot opportunity which is due to complete in October 2018.

Work moved into the delivery phase for Feeder 9, the project under the Humber Estuary, with the tunnel boring machine on site and round the clock tunnelling starting in May 2018 to dig the 5 kilometre tunnel over the next year. This link provides a critical bulk transportation route for gas into the wider NTS. We will continue to work closely with our stakeholders to minimise the impact on local communities and the environment.

The business has also made good progress on Project GRAID, which is developing an innovative robotic inspection device for underground pipework. This year we have developed the robot for offline trials ahead of live site trials later in 2018.

Return on Equity in line with base levels

Return on Equity for the year, using a long-run inflation rate of 3%, was 10.0% in line with the regulatory assumption used in calculating the original revenue allowance. The principal components of the performance are shown in the table below.

 
 Year ended 31 March                                   2018    2017 
                                                             ------ 
    Base return (including avg. 3% long-run 
     inflation)                                        10.0    10.0 
    Totex incentive mechanism                         (0.8)   (0.8) 
    Other revenue incentives                            1.2     1.1 
---------------------------------------------------  ------  ------ 
    Return including in year incentive performance     10.4    10.3 
    Pre-determined additional allowances              (0.4)     0.5 
 Return on Equity                                      10.0    10.8 
---------------------------------------------------  ------  ------ 
 

The business performed below the targets set by the totex incentive mechanism; however it was in line with prior year for overall totex performance. Totex spend was nearly GBP480m, compared to an estimated allowance, adjusted for outputs and phasing, of just under GBP440m.

The main drivers for the decrease in Return on Equity were increases in asset health spend required to deliver our RIIO-T1 outputs, and the cessation of legacy allowances.

Other revenue incentive performance for the business was in line with expectations. Overall, the UK Gas Transmission business delivered around 120 bps of additional returns through other revenue incentives. The majority of this was from strong performance on constraint management, transmission support services and shrinkage incentives. On a pre-tax basis, this equates to an estimated GBP30m of additional revenue allowance, most of which is due to be recovered in future years under the RIIO funding mechanisms.

Regulated Financial Performance in line with 2017

An explanation of the regulatory financial performance measure can be found in the section on UK Electricity Transmission and in the glossary before the notes to this statement.

Regulated financial performance for UK Gas Transmission was in line with prior year at GBP499m reflecting an increased asset base, offset by a lower operational Return on Equity.

 
 Reconciliation of regulated financial 
  performance to operating profit (GBPm)           2018     2017     % change 
 Operating profit                                   487      511          (5) 
    Movement in other regulated assets and 
     liabilities                                   (91)    (120)           24 
    Deferred taxation adjustment                     18       39         (54) 
    RAV indexation (3% long-run avg.)               173      168            3 
    Regulatory v IFRS depreciation difference      (29)     (21)         (38) 
    Fast/Slow money adjustment                     (11)     (14)           21 
    Pensions                                       (32)     (53)           40 
    Performance RAV created                        (16)     (11)         (45) 
----------------------------------------------  -------  -------  ----------- 
 Regulated Financial Performance                    499      499            - 
----------------------------------------------  -------  -------  ----------- 
 

Regulated Financial Position increased 3.5%

RAV increased 4.5% in the year (2017: 2.8%) reflecting a higher inflation uplift, a planned increase in asset health spend to enable an increase in Network Output Measures (NOMs) delivery, and the increased spend on the Feeder 9 project under the Humber Estuary. The increase in asset health spend also adversely affected performance RAV and totex performance as we spent further above our allowances.

 
 GBPm                                             2018    2017 
----------------------------------------------  ------  ------ 
 Opening Regulated Asset Value (RAV)             5,755   5,597 
----------------------------------------------  ------  ------ 
    Asset additions (aka slow money) (actual)      304     201 
    Performance RAV or assets created             (16)    (11) 
    Inflation adjustment (actual RPI)              194     175 
    Depreciation and amortisation                (223)   (207) 
 Closing RAV                                     6,014   5,755 
----------------------------------------------  ------  ------ 
 
 Opening balance of other regulated assets 
  and (liabilities)(1)                            (34)      56 
----------------------------------------------  ------  ------ 
 Movement                                         (91)   (120) 
----------------------------------------------  ------  ------ 
 Closing balance                                 (125)    (64) 
----------------------------------------------  ------  ------ 
 
 Closing Regulated Financial Position            5,889   5,691 
----------------------------------------------  ------  ------ 
 

(1) (March 2017 opening balances adjusted to correspond with 2016/17 regulatory filings and calculations.)

Investment activities in 2017/18 focussed on asset health

UK Gas Transmission invested GBP310m during the year, a GBP96m increase on the prior year, which was due to higher asset health spend and the Feeder 9 project under the Humber Estuary moving into the delivery from design phase.

Asset health expenditure forms part of an essential and co-ordinated programme of work throughout the RIIO period. In the year we conducted a significant valves and civils campaign which contributed to the increase in asset health work versus the prior year. The asset health programme is designed to enable UK Gas Transmission to maintain a safe network and continue to meet regulatory output requirements.

Regulatory and other business developments

In May, we made a number of submissions to Ofgem as part of the May 2018 Re-opener window, which forms part of the RIIO-T1 framework. The submissions cover projects where outputs were uncertain at the beginning of RIIO or have changed during the RIIO period. The submissions therefore cover requests for additional allowances where new outputs are being delivered and reducing allowances where outputs are no longer required or have changed. Under the terms of the licence, Ofgem will make decisions on the submissions by the end of September.

As highlighted in the 2017/18 Overview and UK Electricity Transmission sections, Ofgem issued the framework for the RIIO-T2 consultation process in March 2018. We were pleased that Ofgem recommended that the gas system operator and gas transmission owner be considered as one for RIIO-T2, as they have been historically. For further background and information, please refer to the UK Electricity Transmission section on page 21.

Future activities and outlook

UK Gas Transmission expects returns to remain in line with the allowed level, with continued incentive performance offset by higher totex spend compared to our allowances.

Over the last two years we have received revenues for the Avonmouth project which was ultimately not required. As a result, approximately GBP85m of revenues will be returned in 2018/19 compared to GBP47m received in 2017/18.

Capital investment in UK Gas Transmission in 2018/19 is expected to remain consistent with 2017/18 reflecting the continued investment in asset health activity, compressor reengineering projects as well as the continued delivery of the Feeder 9 project. As a result, regulated asset value is expected to grow above the rate of inflation in 2018/19.

APPIX to UK GAS TRANSMISSION

Revenue and Costs in 2017/18 on an IFRS basis

On a Headline basis, UK Gas Transmission operating profit was GBP487m, down GBP24m or 5%. Excluding the impact of timing, operating profit was GBP56m higher reflecting increased base revenues, and the benefit of the annual RPI uplift on revenue, partly offset by the cessation of legacy gas revenue drivers income.

The principal components of the movement in operating profit are shown below.

 
 Revenue and costs 
 (GBPm)                                           2018    2017   % change 
----------------------------------------------  ------  ------  --------- 
 Net revenue                                       834     857        (3) 
 Regulated controllable operating costs          (146)   (137)        (7) 
 Post-retirement costs                            (18)    (19)          5 
 Other operating costs and provisions               11     (4)        n/a 
 Depreciation and amortisation                   (194)   (186)        (4) 
----------------------------------------------  ------  ------  --------- 
 Headline operating profit                         487     511        (5) 
----------------------------------------------  ------  ------  --------- 
 Less: Timing impact                              (18)      62        n/a 
 Underlying operating profit excluding timing      505     449         12 
 
 

Net revenue (net of pass through costs) decreased by GBP23m. Excluding timing impacts of GBP80m, net revenue increased by GBP57m. This primarily relates to an increase in allowed base revenue and inflation, partly offset by the loss of legacy gas revenues.

Regulated controllable costs increased by GBP9m reflecting higher labour costs and higher Xoserve costs.

Depreciation and amortisation increased by GBP8m, while other operating costs decreased by GBP15m due to one-off provision releases in the year.

US REGULATED OPERATIONS

2017/18 Overview

National Grid's US Regulated business made significant progress during 2017/18, achieving an improved Return on Equity, increased levels of investment, and delivering a major rate agreement. We responded to a number of major storms both within and outside of our service territories, and continued to focus on driving improved safety performance.

We continued to focus on safety, seeing a 6% reduction in the number of injuries requiring medical attention beyond first aid, and a 19% reduction in the number of preventable road traffic collisions during the year. We implemented Safety, Health and Environment (SHE) plans at local levels to address current risks and injury trends, and we also established our guiding principles of safety which sets out how our people can play a role in promoting a safer environment for everyone. We will continue to focus on improving our safety culture to address key risk and hazard mitigation strategies in 2018/19.

Major storms

We faced a challenging winter, with major storms across all our jurisdictions, as well as record cold weather. There were no gas outages, demonstrating improvements to our networks through gas infrastructure investment.

In September, more than 130 National Grid US employees responded to the 7.8 million outages caused by Hurricane Irma in Florida and Georgia. We have also assisted with restoration efforts in Puerto Rico over the past six months following the damage caused by Hurricane Maria.

In October, we had to restore power to 532,000 customers following one of the most severe storms in recent years. In March, we were challenged again with an unprecedented three back-to-back Nor'Easters. Our crews worked round the clock, moving between regions, restoring the vast majority of customers in each of the storms within 72 hours. The majority of the restoration costs of around GBP140 million will be recovered via our existing regulatory mechanisms.

Increased Return on Equity

Return on Equity for 2017/18 was 8.9%, an increase of 70 bps compared to 2016/17. This represents 95% of the average allowed return and reflects a first full-year benefit from new rate plans for our Massachusetts Electric, KEDNY and KEDLI businesses.

Another year of significant capital investment

Capital investment in the Company's US regulated businesses increased by $421m to a new high of $3.3bn on a statutory basis, or $3.2bn on a US GAAP basis.

Approximately $1.8bn was associated with the gas distribution networks, primarily on mandated programmes to replace ageing infrastructure and on adding new customers to the networks. In total, National Grid replaced approximately 220 miles of leak prone pipe, exceeding our regulatory targets for each operating company, and added approximately 16,000 new gas customers.

Approximately $1.0bn was invested in the electricity distribution networks primarily to improve asset health, system capacity and performance. Significant investment was also made in response to customer requests including almost 11,000 new distributed generation connections across the territory. A further $0.3bn was invested in the Federal Energy Regulatory Commission (FERC) regulated businesses.

Impact of US Tax Reform

Tax is a pass-through cost for utilities. The reduction in the corporation tax rate from 35% to 21% will be significantly beneficial to customers and economically neutral for utilities.

There will be some implications on the balance sheet resulting from lower bill collections. This is because there is little or no offset in cash tax paid as we are currently in a net operating loss position for the purposes of calculating taxable profits in our US Group.

We reduced our revenue requests by $180m across the three operating companies that were undergoing rate filings at the time the legislation was enacted, as well as for our FERC businesses which operate under formula rates. In our remaining distribution businesses we may be able to partially offset the bill reduction, for example, through faster recovery of existing regulatory asset balances. We filed our Massachusetts Electric proposals in early May and plan to file KEDNY and KEDLI over the summer.

We will also return $2bn of existing deferred tax liabilities, which represents amounts previously collected from customers based on the higher rate of 35%, over 20 to 30 years.

Due to regulatory accounting applicable under US GAAP there is no impact at the operating company level on earnings or US Return on Equity (RoEs). Under IFRS, for the Group overall there will be a small impact associated with the return of the deferred tax balance in future years, with the release of the $2bn liability being reflected as an exceptional item this year.

Rate base growth will increase due to the lower tax rate, the abolition of bonus depreciation for utilities, and the return of the $2bn of existing deferred tax liabilities. Over time this will be beneficial to cash flow, marginally offsetting the lower tax collections.

Regulated Financial Position

Overall, the US rate base increased by $1,419m (7.4%) to $20,716m driven by increased capital expenditure partially offset by depreciation, timing over recoveries and deferred tax movements.

US Regulated Assets ($bn as at 31 March)

 
                                           2018    2017   % change 
 ---------------------------------------  -----  ------  --------- 
  Rate Base excl. working capital 
   (w/c)                                   20.0    18.6          7 
  Working capital in Rate Base              0.7     0.7          - 
                                          -----  ------  --------- 
 Total Rate Base                           20.7    19.3          7 
  Reg. assets outside Rate Base excl. 
   w/c                                      2.7     2.2         25 
  Working capital outside Rate Base           -   (0.1)          - 
 ---------------------------------------  -----  ------  --------- 
 Total regulated assets outside Rate 
  Base                                      2.7     2.1         29 
----------------------------------------  -----  ------  --------- 
 Total US Regulated Assets                 23.4    21.4          9 
----------------------------------------  -----  ------  --------- 
 
 GBPbn as at 31 March 
----------------------------------------  -----  ------  --------- 
                                           2018    2017   % change 
----------------------------------------  -----  ------  --------- 
 Total US Regulated Assets at actual 
  currency                                 16.7    17.1        (2) 
----------------------------------------  -----  ------  --------- 
 Total US Regulated Assets at constant 
  currency                                 16.7    15.2          9 
----------------------------------------  -----  ------  --------- 
 

Financial performance

Headline operating profit was GBP1,698m, a decrease of GBP15m at actual exchange rates including adverse exchange rate movements of GBP102m.

On a constant currency basis, net revenue (including timing) increased by GBP278m to GBP5,468m, driven by increased revenue allowances from the Massachusetts Electric, KEDNY and KEDLI rate cases and our capex trackers. Regulated controllable costs excluding pensions decreased by GBP1m largely due to non-recurrence of capital cost write-offs in the prior year, partially offset by higher spending in the current year due to a greater workload and certain mandated items from the rate plans.

Post-retirement costs decreased by GBP2m and bad debts decreased by GBP13m. Depreciation and amortisation increased by GBP31m and other costs increased by GBP176m due to increased property taxes, environmental spend, and major storm costs of GBP142m.

Underlying operating profit at constant currency for the year excluding timing and major storm impacts was GBP280m (20%) higher than 2016/17 at GBP1,704m.

Regulatory and other business developments

National Grid works collaboratively with regulators and other stakeholders to ensure the necessary investments are made to construct and maintain safe and reliable networks, while managing costs to customers. Where appropriate, National Grid continues to propose further projects and initiatives to provide benefits to customers through the use of new technology or by facilitating the transition to a low carbon economy.

During 2017/18 we reached agreement with the New York Public Service Commission (PSC) for a three-year rate plan for NiMo with new rates effective from 1 April 2018. We also filed rate cases for new gas distribution rates in Massachusetts, and new electricity and gas distribution rates in Rhode Island, where rates had remained the same for eight and five years respectively.

Future activities and outlook

The 2018/19 outlook for National Grid's US Regulated activities remains positive.

We will see the full benefit from the rate case agreed for NiMo, and anticipate outcomes on the rate cases filed for Massachusetts Gas and Narragansett (Rhode Island) Electric and Gas with new rates effective in October and September respectively.

We expect to invest around $10bn over the next three years in our US business. We also expect that the vast majority of this investment will be fully remunerated, benefitting earnings from the point the investment is made. The higher levels of investment are already impacting our rate base growth with increased growth this year of 7.4%. This higher investment alongside the beneficial impact of US tax reform means that we expect the growth rate to continue to be at least 7% through to 2021 and higher in the near term.

New York

The New York Jurisdiction consists of KEDNY and KEDLI, gas distribution companies in downstate New York, and NiMo, an electricity and gas distribution company in upstate New York. A summary of the rate plans in effect as of 31 March 2018 is shown below.

Summary of rate plans - New York

 
 Regulated            Filing            Start date     Allowed Return   Fully funded    Revenue 
  Entity                                 of current       on Equity      investment     increase 
                                         rate plan 
-----------  -----------------------  --------------  ---------------  -------------  ---------- 
 KEDNY        3 year joint proposal    January 2017         9.0%           $1.9bn        $362m 
 KEDLI        3 year joint proposal    January 2017         9.0%           $1.1bn        $159m 
 NiMo         3 year joint proposal     April 2018          9.0%           $2.5bn        $132m 
-----------  -----------------------  --------------  ---------------  -------------  ---------- 
 

In March, we achieved a favourable rate case outcome for our largest utility, NiMo. The agreement provides an allowed Return on Equity of 9%, funding for $2.5bn in capital investment over the next three years, and 250 new jobs. Performance based mechanisms will allow for up to 61 bps of return outperformance for gas, and up to 65 bps for electric. This level of capital investment is 35% more than we have invested over the last three years. It allows us to invest in significant infrastructure renewal projects in our service territory, including the replacement of 150 miles of leak prone gas pipe, the Albany Loop Closure project, and the $100m upgrade of the Gardenville substation which serves downtown Buffalo and Western New York.

Return on Equity for 2017/18 increased 80 bps to 9.0% for KEDNY and by 60 bps to 10.1% for KEDLI. The NiMo Return on Equity for 2017/18 increased by 30 bps to 8.8% for the electricity business and increased by 130 bps to 7.9% for the gas business.

 
 Return on Equity                                         Most recent granted 
                                     Achieved (%)                 (%) 
----------------------------  -------------------------  -------------------- 
 Regulated Entity               FY18     FY17     CY15 
 New York 
  KEDNY                         9.0      8.2      7.1             9.0 
  KEDLI                         10.1     9.5      7.3             9.0 
  NMPC Gas                      7.9      6.6      8.4             9.0 
  NMPC Electric                 8.8      8.5      8.1             9.0 
 ---------------------------  -------  -------  -------  -------------------- 
 Total New York(1)              9.0      8.4      7.7             9.0 
                                                -------  -------------------- 
  (1) Total return weighted by average rate base 
 
 

On a US GAAP basis, capital investment in 2017/18 increased to $1,651m from $1,281m in 2016/17. The increased investment was driven by higher levels of capital expenditure funded by the KEDNY/KEDLI joint proposal and NiMo capital petition, including a total of nearly 440 miles of leak prone pipe replacement, compared to 430 miles in the prior year.

Rate Base ($m) as at 31 March

 
 New York Regulated Entity     2018     2017    % change 
---------------------------  -------  -------  --------- 
 KEDNY                        3,004    2,722       10 
 KEDLI                        2,346    2,256       4 
 NMPC Gas                     1,163    1,052       11 
 NMPC Electric                4,980    4,737       5 
---------------------------  -------  -------  --------- 
 Total New York               11,493   10,767      7 
---------------------------  -------  -------  --------- 
 

National Grid continues to develop and implement projects to progress New York state's Reforming the Energy Vision (REV) programme. This seeks to help consumers make more informed energy choices, develop new energy products and services, and protect the environment while creating new jobs and economic opportunity throughout the state. The eight REV demonstration projects are progressing and achieved major milestones in 2017/18, including reaching a 500kW solar capacity target in the Fruitbelt, over 13,000 electric Advanced Metering Infrastructure (AMI) meters, nearly 12,000 gas Encoder Receiver Transmitters (ERT) installed in Clifton Park, and an award winning Gas Demand Response Programme. The Public Service Commission also recently approved the Smart City REV demonstration in Schenectady to install LED streetlights.

Massachusetts

The Massachusetts Jurisdiction consists of the Massachusetts Electric business (including Nantucket Electric) and the Massachusetts Gas business (including Boston Gas and Colonial Gas).

In November 2017, we filed a rate case for our Massachusetts Gas business, and we expect to have new rates in place by October 2018. Our filing requested a Return on Equity of 10.5%, an increase in revenue of $46m (after adjusting for the lower US tax rate), and capital investment of over $550m.

A summary of the current rate plans is shown below.

Summary of current rate plans - Massachusetts

 
 Regulated Entity           Filing       Start date     Allowed Return   Fully funded    Revenue 
                                         of current        on Equity      investment     increase 
                                          rate plan 
------------------------  ----------  ---------------  ---------------  -------------  ---------- 
 Massachusetts Gas(1)      One year    November 2010         9.8%           $241m 
 Massachusetts Electric    One year     October 2016         9.9%           $249m         $101m 
------------------------  ----------  ---------------  ---------------  -------------  ---------- 
 

(1) Boston Gas and Colonial Gas

Return on Equity for Massachusetts Electric increased by 470 bps to 9.0% reflecting increased revenues associated with new rates that became effective in October 2016. Return on Equity for Massachusetts Gas decreased by 110 bps to 6.6% ahead of new rates becoming effective in October, reflecting high levels of gas leak repair costs during the year.

 
 Return on Equity                                Most recent granted 
                               Achieved (%)              (%) 
-------------------------  -------------------  -------------------- 
 Regulated Entity           FY18   FY17   CY15 
 Massachusetts 
  Massachusetts Gas         6.6    7.7    8.4            9.8 
  Massachusetts Electric    9.0    4.3    3.4            9.9 
 ------------------------  -----  -----  -----  -------------------- 
 Total Massachusetts(1)     7.8    6.0    5.8            9.8 
-------------------------  -----  -----  -----  -------------------- 
 

(1) Total return weighted by average rate base

On a US GAAP basis, capital investment in 2017/18 increased to $957m from $791m in 2016/17. The increased investment was driven by the new rate plan for the Electric business and higher levels of leak prone pipe replacement in the Gas business.

Rate Base ($m) as at 31 March

 
 Massachusetts Regulated Entity    2018    2017    % change 
--------------------------------  ------  ------  --------- 
 Massachusetts Gas                 2,479   2,251      10 
 Massachusetts Electric            2,448   2,281      7 
--------------------------------  ------  ------  --------- 
 Total Massachusetts               4,927   4,532      9 
--------------------------------  ------  ------  --------- 
 

In December, the Massachusetts Clean Energy Center awarded energy storage grants totalling $4.5m to projects supported by National Grid. The funding supports 4.8MW of energy storage capacity. One grant will assist in the planned construction and operation of an energy storage system to be deployed alongside one of our large scale solar installations located in Shirley, Massachusetts.

Rhode Island

The Rhode Island Jurisdiction consists of the Narragansett Electric and Narragansett Gas businesses that cover the majority of the state. A summary of the current rate plans is shown below.

Summary of current rate plans - Rhode Island

 
 Regulated Entity          Filing       Start date     Allowed Return    Fully funded     Revenue 
                                        of current        on Equity      investment(1)    increase 
                                         rate plan 
-----------------------  ----------  ---------------  ---------------  ---------------  ---------- 
 Narragansett Gas         One year    February 2013         9.5%            $101m         $11.3m 
 Narragansett Electric    One year    February 2013         9.5%            $101m         $21.5m 
-----------------------  ----------  ---------------  ---------------  ---------------  ---------- 
 

(1) Including capex recovered through our annual ISR filing

Both the gas and electric businesses are recovering base operating costs under one-year rate plans that became effective in February 2013, using a 2011 test year. Other costs, including capital, pension and property taxes, are recovered through annual trackers. These include gas and electric Infrastructure Safety and Reliability (ISR) capital trackers that allow us to agree a level of investment for the coming year and concurrently recover the full costs associated with investment in the current year.

In November 2017, we filed a rate case for both Narragansett Electric and Narragansett Gas. The filing requested a Return on Equity of 10.1% for both businesses, and a total combined revenue increase of $35m (after adjusting for the lower US tax rate). We expect to have new rates in place in September 2018.

Return on Equity decreased by 80 bps to 6.9% for the combined Rhode Island business. This was largely driven by the impact of inflation on the cost base ahead of new rate filings.

 
 Return on Equity                                 Most recent granted 
                                Achieved (%)              (%) 
--------------------------  -------------------  -------------------- 
 Regulated Entity            FY18   FY17   CY15 
 Rhode Island 
    Narragansett Gas         8.4    9.4    9.8            9.5 
    Narragansett Electric    5.6    6.2    10.5           9.5 
--------------------------  -----  -----  -----  -------------------- 
 Total Rhode Island(1)       6.9    7.7    10.2           9.5 
--------------------------  -----  -----  -----  -------------------- 
 

(1) Total return weighted by average rate base

On a US GAAP basis, capital investment in 2017/18 increased to $232m from $196m in 2016/17.

Rate Base ($m) as at 31 March

 
 Rhode Island Regulated Entity    2018    2017    % change 
-------------------------------  ------  ------  --------- 
    Narragansett Gas               742     640       16 
    Narragansett Electric          737     665       11 
-------------------------------  ------  ------  --------- 
 Total Rhode Island               1,479   1,305      13 
-------------------------------  ------  ------  --------- 
 

The Rhode Island business achieved strong delivery of its gas and electric capital investment plans in 2017/18. In relation to the electric business, the $80m South Street substation rebuild project in Providence, which is a key part of the city's redevelopment and economic growth, met all major milestones in 2017/18 with the completion of the station construction and the start of cutovers from the old station. For the gas business, the proactive main replacement programme continues to drive our gas capital investment with over 60 miles of leak prone pipe replaced in Rhode Island in 2017/18.

FERC

The FERC Jurisdiction consists of the Long Island Generation business, the Canadian Interconnector, New England Power, Narragansett Electric (Transmission), and LNG investments.

Long Island Generation and the Canadian Interconnector are contracted investments, meaning that they earn revenues from long-term contracts with customers. The contracts are regulated by FERC and allow for an agreed Return on Equity. New England Power and Narragansett Electric (Transmission) use formula rates that allow for the businesses to earn returns on incremental investments almost immediately.

Return on Equity for the FERC Jurisdiction increased by 20 bps to 11.5%, primarily driven by an increased Return on Equity for Long Island Generation to 13.5% (2016/17: 12.0%).

FERC previously agreed to lower the base Return on Equity for the New England transmission owners from 11.14% to 10.57% for the period of October 2011 to December 2012. In April 2017, the US Court of Appeals found the FERC failed to articulate a satisfactory explanation for its actions. In March 2018, an Initial Decision was issued on Complaint 4, raised by New England Transmission Owners, NETO, ruling that the current base Return on Equity of 10.57% and maximum Return on Equity of 11.74% is not unjust and unreasonable. This Initial Decision is not the final agency action and must be acted upon by the Commission. We expect a final order no earlier than Q1 2019.

 
 Return on Equity                                            Most recent granted 
                                           Achieved (%)              (%) 
-------------------------------------  -------------------  -------------------- 
 Regulated Entity                       FY18   FY17   CY15 
 FERC 
  Long Island Generation                13.5   12.0   12.5           9.9 
  New England Power                     11.0   11.1   11.0          10.6 
  Canadian Interconnector               13.0   13.0   13.0          13.0 
  Narragansett Electric Transmission    11.5   11.4   11.2          10.6 
 ------------------------------------  -----  -----  -----  -------------------- 
 Total FERC(1)                          11.5   11.3   11.4          10.5 
-------------------------------------  -----  -----  -----  -------------------- 
 

(1) Total return weighted by average rate base

On a US GAAP basis, capital investment in 2017/18 decreased to $312m from $382m in 2016/17.

Rate Base ($m) as at 31 March

 
 FERC Regulated Entity                     2018    2017   % change 
---------------------------------------  ------  ------  --------- 
    Long Island Generation                  408     422        (3) 
    New England Power                     1,661   1,543          8 
    Canadian Interconnector                  30      31        (3) 
    Narragansett Electric Transmission      718     697          3 
---------------------------------------  ------  ------  --------- 
 Total FERC                               2,817   2,693          5 
---------------------------------------  ------  ------  --------- 
 

In November 2017, we announced plans to install a 48MWh Battery Energy Storage System (BESS) on the island of Nantucket. Given growth forecasts, the island's emergency electricity back-up system needs to be expanded particularly as it is served by two submarine cables. The BESS, together with new backup diesel generation, will have a 6MW capacity to supply the island for up to eight hours in the event of a cable failure. It is one of several innovative battery systems that National Grid has planned across the three States that it serves.

NATIONAL GRID VENTURES AND OTHER ACTIVITIES

Good performance in the year

 
 12 months ended 31 March at              Operating     change    Capital investment    change 
  actual exchange rates                     profit         %                               % 
                                                       ------- 
 (GBPm)                                  2018    2017                 2018       2017 
---------------------------------       -----  ------  -------  ----------  ---------  ------- 
 Metering (incl. smart)                   155     161      (4)          53         35       51 
 Grain LNG                                 76      74        3           7          6       17 
 IFA                                       65      72     (10)          21         15       40 
 IFA2                                       -       -        -          58          2      n/a 
 North Sea Link                             -       -        -          47         40       18 
 Other                                   (62)    (68)        9           -          -        - 
---------------------------------       -----  ------  -------  ----------  ---------  ------- 
 Total National Grid Ventures             234     239      (2)         186         98       90 
 
 Property                                  84      65       29          14         15      (7) 
 Corporate and other activities          (87)   (127)       31         141        134        5 
---------------------------------       -----  ------  -------  ----------  ---------  ------- 
 Total Other                              (3)    (62)       95         155        149        4 
---------------------------------       -----  ------  -------  ----------  ---------  ------- 
 Total National Grid Ventures 
  and Other                               231     177       31         341        247       38 
---------------------------------       -----  ------  -------  ----------  ---------  ------- 
 
 
 
 Joint ventures and associates            Share of     change        Capital        change 
                                           post-tax       %        investment(1)      % 
                                           results 
 (GBPm)                                  2018   2017               2018      2017 
-------------------------------------   -----  -----  -------  --------  --------  ------- 
 BritNed                                   36     53     (32)         -         -      n/a 
 Nemo Link                                (1)      1    (200)       113        53      113 
 Millennium                                13     13        -        13         4      225 
 Other                                      5      2      150        51        70     (27) 
--------------------------------------  -----  -----  -------  --------  --------  ------- 
 Total National Grid Ventures              53     69     (23)       177       127       39 
 St. William                              (9)    (6)     (50) 
 Cadent(2)                                123      -      n/a 
-------------------------------------   -----  -----  ------- 
 Total Other                              114    (6)      n/a 
--------------------------------------  -----  -----  ------- 
 Total Joint Ventures and Associates      167     63      165 
--------------------------------------  -----  -----  ------- 
 
 

(1) Excludes GBP19m and GBP10m equity contribution to St William property joint venture for 2018 and 2017, respectively.

(2) Continuing results for 2016/17 exclude any contribution from Cadent. The estimated equivalent contribution for 2016/17 would have been GBP144m.

NATIONAL GRID VENTURES

National Grid Ventures performed well this year, making a GBP287m positive contribution to Group profit before tax, which consisted of Headline operating profit and post-tax share of JVs and associates earnings. Capital investment was GBP363m for the period to 31 March 2018, up GBP138m versus the prior year.

Metering profits continue expected decline; cash flows remain strong

The metering business continues to see a decline in meter rental income driven by the Government mandated smart meter rollout programme, albeit slower than expected. We now own 11.1 million gas meters, down 1.3m on the prior year. Investment is up GBP18m on prior year primarily due to increased smart metering installations. As at 31 March 2018, a total of 107,000 smart meters have now been installed (2016/17: 7,000 meters).

Grain LNG profit steady

National Grid's LNG import terminal on the Isle of Grain continues to deliver a consistent level of operating profit which is backed by long-term 'take or pay' capacity contracts with suppliers.

Existing interconnectors in line with expectations

As expected, operating profit for IFA declined 10% to GBP65m, driven by reduced price arbitrage between the UK and continental Europe. IFA had good availability in the year of 93% (2016/17: 78%, due to Storm Angus). Increased investment in 2017/18 was primarily driven by the ongoing refurbishment programme to extend the life of the interconnector for another 30 years.

Our share of BritNed profit after tax was GBP17m lower year-on-year, primarily due to lower auction revenue.

Construction continues on Nemo and NSL, and now underway on IFA2 interconnector

Construction continues on both the Nemo Link and NSL, which remain on track to be operational in FY2019 and FY2022 respectively. The increased investment in Nemo reflects 112km of cable laid and the start of construction of the converter stations during the year.

In November 2017, we also commenced construction on IFA2, a 1GW, GBP350m HVDC interconnector between Chilling in England and Tourbe in France. It will become the second link to France that National Grid has developed with RTE and it is expected to be operational in late 2020.

Business Development opportunities

In June, we were selected as preferred bidder for a new link between Shetland and mainland Great Britain. Having won the competitive tender for the Shetland link, we were disappointed that Ofgem rejected our proposal. This was due to two reasons. First, changes in the EU Industrial Emissions Directive, with tougher emissions targets only applying to Lerwick power station from 2030, 10 years later than initially expected. Second, the government announcement in October 2017 that, subject to receiving state aid approval, wind farms on remote islands will be eligible to compete for a Contract for Difference in the next auction in 2019. This meant Ofgem received assurances that the security of supply from Lerwick could be guaranteed until 2025 at a cost below our proposed connection.

In the US, we have worked on the Granite State and Northeast Renewable projects to bring new-build renewables into Massachusetts. Although our projects were unsuccessful in the last Clean Energy RFP, we will utilise the foundational work to explore how these projects can be evolved to meet longer-term clean energy needs.

US renewable and storage opportunities

The evolving energy landscape is creating new opportunities in our US territories.

During 2017, National Grid Ventures signed power purchase agreements with the Long Island Power Authority to build and operate battery storage energy systems. This project includes two 5MW, 8 hour lithium-ion battery systems located on Long Island's South Fork and will help customers avoid the cost of new transmission or traditional generation. We are also constructing a 6.4MW/15MWh BESS at the Philadelphia Navy Yard (PNY). The battery will be for peak shaving and resiliency as part of the PNY microgrid. We were awarded the project in April 2018 and expect the system to be in service by mid-2019.

The business also connected over 204MW of rooftop solar for almost 27,000 customers through our joint venture with Sunrun and won a competitive 23MW solar project in Suffolk County, Long Island.

OTHER ACTIVITIES

Headline operating loss for the twelve months ended 31 March 2018 was GBP(3)m, GBP59m favourable compared to last year, largely driven by additional property site sales and a reduction in other costs.

The Property business delivered an operating profit of GBP84m (2016/17: GBP65m), as a result of further sales, most notably our Staines and York sites.

Other costs decreased year-on-year reflecting the expected reduction in business change programme expenditure.

In March this year, St. William 'topped out' the first apartment building at the Prince of Wales Drive site in Battersea. This is a significant milestone for the scheme, which will deliver almost one thousand new homes when completed.

The remaining 39% stake in Cadent made a GBP123m post tax contribution, down GBP21m compared to an estimate of the equivalent contribution last year. This was largely driven by timing.

Future activities and outlook

The focus for National Grid Ventures remains the efficient construction of the major interconnector projects in its portfolio, with an expected step up in capital investment in FY19 as construction continues on Nemo, NSL and IFA2. These three projects represent a total GBP1.3bn capital investment. A final investment decision on Viking Link, the 1.4GW 760km interconnector from England to Denmark, is expected later this summer.

National Grid is at the heart of decarbonisation in both the UK and US. The strong ongoing growth in large scale renewables is likely to generate further opportunities for incremental investment. The long-term contracted nature or regulatory underpinning makes them well suited to the risk/reward profile of our portfolio. They leverage many of our core capabilities in engineering, project development, asset management and financing.

We are therefore actively engaged in the renewables space, which is creating new opportunities for the business. The economics for Solar and Wind generation are becoming increasingly attractive, and the ongoing significant growth in large scale renewables is set to continue into the long-term.

In the UK, we currently have around 100 connections in the pipeline from a range of new solar and storage customers. Similarly, in the US, at the distribution level, we continue to connect renewables for customers.

APPIX: BASIS OF PRESENTATION, DEFINITIONS AND METRIC CALCULATIONS

BASIS OF PRESENTATION

Headline (or Adjusted)

Unless otherwise stated, all financial commentaries in this release are given on a Headline (also referred to as Adjusted) basis at actual exchange rates.

'Headline' (also referred to as 'Adjusted') results are a key financial performance measure used by National Grid, which represent the results for continuing operations before exceptional items and remeasurements. Remeasurements comprise gains or losses recorded in the income statement arising from changes in the fair value of commodity contracts and derivative financial instruments to the extent that hedge accounting is not achieved or is not fully effective. Commentary provided in respect of results after exceptional items and remeasurements is described as 'statutory'. Further details are provided in note 3 on page 57. A reconciliation to statutory results is provided in the consolidated income statement on page 49.

Within this release a number of financial measures are presented. These measures have been categorised as Alternative Performance Measures (APMs), as per the European Securities and Markets Authority (ESMA) guidelines and the Securities and Exchange Commission (SEC) conditions for use of non-GAAP Financial Measures.

An APM is a financial measure of historical or future financial performance, financial position or cash flows, other than a financial measure defined under IFRS. The Group uses a range of these measures to provide a better understanding of the underlying performance of the Group. APMs are reconciled to the most directly comparable IFRS financial measure where practicable.

The Group has defined the following financial measures as APMs derived from IFRS: net revenue, Headline operating profit including timing and major storms, Underlying operating profit excluding timing and major storms, adjusted earnings per share including and excluding timing and major storms, net debt, capital investment, funds from operations (FFO), FFO/interest cover and retained cash flow (RCF)/adjusted net debt. For each of these measures we present a reconciliation to the most directly comparable IFRS measure.

In addition to these APMs, we also have APMs derived from regulatory measures which have no basis under IFRS; we call these Regulatory Performance Measures. They comprise: Group Return on Equity (RoE), UK and US regulatory RoE, Regulated Asset Base, Regulated Asset Base growth, Regulatory gearing, annual Asset Growth, Value Growth and Value Added including value added per share. These measures reflect, in particular, the inputs used by utility regulators to set the allowed revenues for many of our businesses. As such, we believe that they provide close correlation to the economic value we generate for our shareholders and are therefore important supplemental measures for our shareholders to understand the performance of the business.

We use these measures to monitor progress against our regulatory agreements and certain aspects of our strategic objectives. Further, targets for some of these performance measures are included in the Company's Annual Performance Plan (APP) and Long Term Performance Plan (LTPP) and contribute to how we reward our employees. We consider that such regulatory measures are important supplemental measures to our IFRS reporting to ensure a complete understanding of Group performance.

The starting point for our Regulatory Performance Measures is not IFRS, and the assumptions used in deriving these measures are not governed by IFRS. We are unable to provide meaningful reconciliations to any directly comparable IFRS measures, as differences between IFRS and the regulatory recognition rules applied have built up over many years. Instead, for each of these we present an explanation of how the measure has been determined and why it is important, and an overview as to why it would not be meaningful to provide a reconciliation to IFRS.

DEFINITIONS

Alternative Performance Measures derived from IFRS

The following are metrics that are reconciled to IFRS measures, as set out on pages 42 to 44.

Annual Asset Growth

'Annual Asset Growth' measures the increase in 'total regulatory value and other investments', defined below.

Capital Investment

'Capital Investment' or 'Investment' refer to additions to plant, property and equipment and intangible assets, and contributions to joint ventures, other than the St William joint venture during the period. St William is excluded based on the nature of this joint venture arrangement.

Constant Currency

'Constant Currency Basis' refers to the reporting of the actual results against the results for the same period last year which, in respect of any US dollar currency denominated activity, have been translated using the weighted average US dollar exchange rate for the year ended 31 March 2018, which was $1.36 to GBP1.00. The weighted average rate for the year ended 31 March 2017, was $1.28 to GBP1.00. Assets and liabilities as at 31 March 2017 have been retranslated at the closing rate at 31 March 2018 of $1.40 to GBP1.00. The closing rate for the balance sheet date 31 March 2017 was $1.25 to GBP1.00.

Net Revenue

'Net Revenue' is revenue less pass-through costs, such as payments to other UK network owners, system balancing costs, and gas and electricity commodity costs in the US. Pass-through costs are fully recoverable from our customers and are recovered through separate charges that are designed to recover those costs with no profit. Any over or under-recovery of these costs is returned to, or recovered from, our customers.

Regulatory Performance Measures

The following are metrics unable to be reconciled to IFRS measures as their starting point is not IFRS and the assumptions used to drive changes in these measures are not governed by IFRS.

Group Return on Equity

'Group Return on Equity' or 'Group RoE' provides investors with a view of the performance of the Group as a whole compared with the amounts invested by the Group in assets attributable to equity shareholders. It is the ratio of our regulatory financial performance to our measure of equity investment in assets. It therefore reflects the regulated activities as well as the contribution from our non-regulated businesses together with joint ventures and minority interests.

We use Group RoE to measure our performance in generating value for our shareholders and a target for Group RoE is included in the incentive mechanisms for executive remuneration within both the APP and LTPP schemes.

Group RoE is underpinned by our regulated asset base. For the reasons noted further below, no reconciliation to IFRS has been presented as we do not believe it would be meaningful.

Other Regulatory Assets and Liabilities

The revenues that National Grid's UK regulated businesses targets to collect in any year are based on the regulator's forecasts for that year. Under the UK price control arrangements, revenues will be adjusted in future years to take account of actual levels of collected revenue, costs and outputs delivered when they differ from those regulatory forecasts. This includes adjustments designed to share performance efficiencies with customers. National Grid's estimate of these future revenue adjustments are represented in the calculation of regulated financial performance and regulated financial position as 'Other Regulatory Assets and Liabilities'. These include:

   --      Revenues associated with sharing under the totex incentive mechanism 
   --      Adjustments for changes to customer output requirements on totex allowances 
   --      True ups for pass through costs, actual RPI and pensions deficit repair costs 
   --      Differences between allowed/targeted and recovered revenues 
   --      Differences between revenues collected and earned under other incentive mechanisms 

In addition, Other Regulatory Assets and Liabilities include balances relating to 'phasing adjustments'. Where expenditure allowances have been awarded in one year but are associated with expenditure that is now expected to be incurred in a different year National Grid applies 'phasing adjustments' to better match the allowances to the year of expenditure. In such cases, the revenues associated with these re-phased allowances are included in Other Regulated Assets and Liabilities and reversed when the associated expenditure is incurred.

In the US, other regulatory assets and liabilities include regulatory assets and liabilities which are not included in the definition of rate base within that jurisdiction, including working capital where appropriate.

Performance RAV

UK performance efficiencies are in part remunerated by the creation of additional RAV which is expected to result in future earnings under regulatory arrangements. This is an addition to RAV above and beyond that associated with the remuneration of actual expenditure and is termed 'Performance RAV'.

Regulated Asset Base

The 'Regulated Asset Base' is a regulatory construct, based on pre-determined principles not based on IFRS. It effectively represents the invested capital on which we are authorised to earn a cash return. By investing in our networks, we add to our Regulated Asset Base over the long term and this in turn contributes to delivering shareholder value. Our regulated asset base is comprised of our regulatory asset value in the UK, plus our rate base in the US.

Maintaining efficient investment in our regulated asset base ensures we are well positioned to provide consistently high levels of service to our customers and increases our revenue allowances in future years. While we have no specific target, our overall aim is to achieve between 5% and 7% growth in regulated asset base each year through continued investment in our networks in both the UK and US.

In the UK, the way in which our transactions affect 'Regulated Asset Value' (RAV) is driven by principles set out by Ofgem. In a number of key areas these principles differ from the requirements of IFRS, including areas such as additions and the basis for depreciation. Further, our UK RAV is adjusted annually for inflation. RAV in each of our retained UK businesses has evolved over the period since privatisation in 1990 and as a result, historical differences between the initial determination of RAV and balances reported under UK GAAP at that time still persist. Due to the above, substantial differences exist in the measurement bases between RAV and an IFRS balance metric and, therefore, it is not possible to provide a meaningful reconciliation between the two.

In the US, 'Rate Base' is a regulatory measure determined for each of our main US operating companies. It represents the value of property and other assets or liabilities on which we are permitted to earn a rate of return, as set out by the regulatory authorities for each jurisdiction. The calculations are based on the applicable regulatory agreements for each jurisdiction and include the allowable elements of assets and liabilities from our US companies. For this reason, it is not possible to provide a meaningful reconciliation from the US Rate Base to an equivalent IFRS measure.

Timing

Under the Group's regulatory frameworks, the majority of the revenues that National Grid is allowed to collect each year are governed by a regulatory price control or rate plan. If National Grid collects more than this allowed level of revenue, the balance must be returned to customers in subsequent years, and if it collects less than this level of revenue it may recover the balance from customers in subsequent years. These variances between allowed and collected revenues give rise to 'over and under-recoveries'. In addition, a number of costs in both the UK and the US are pass-through costs (including substantial commodity and energy efficiency costs in the US), and are fully recoverable from customers. Any timing differences between costs of this type being incurred and their recovery through revenues are also included in over and under-recoveries. In the UK, timing differences also include an estimation of the difference between revenues earned under revenue incentive mechanisms and any associated revenues collected. UK timing balances and movements exclude any adjustments associated with changes to controllable cost (totex) allowances or adjustments under the totex incentive mechanism.

Identification of these timing differences enables a better comparison of performance from one period to another. Opening balances of under and over-recoveries have been restated where appropriate to correspond with regulatory filings and calculations.

Total Regulatory Value and Other Investments

The sum of: the Regulatory Asset Value of the UK regulated businesses determined under the methodology set out in Ofgem's Price Control Financial Model; the Rate Bases applicable to each US regulated entity calculated according to the methodology used by each respective utility regulator; the value of assets held by the Group's National Grid Ventures and Other activities; together with investments in joint ventures and associates excluding Cadent. National Grid Ventures and Other activities primarily relate to non-network businesses and other commercial operations including: UK gas metering activities; the Great Britain-France Interconnector; UK property management; a UK LNG import terminal; and Nemo, North Sea Link and IFA2 interconnector projects, which are all under construction.

Totex

Under the UK RIIO regulatory arrangements the Company is incentivised to deliver efficiencies against cost targets set by the regulator. In total, these targets are set in terms of a regulatory definition of combined total operating and capital expenditure, also termed 'Totex'. The definition of Totex differs from the total combined regulated controllable operating costs and regulated capital expenditure as reported in this statement according to IFRS accounting principles. Key differences are capitalised interest, capital contributions, exceptional costs, costs covered by other regulatory arrangements and unregulated costs.

UK Regulated Return on Equity (nominal)

'UK Regulated Return on Equity' or 'UK Regulated RoE' is a measure of how the businesses are performing against the assumptions used by our regulator. These returns are calculated using the assumption that the businesses are financed in line with the regulatory adjudicated capital structure, at the cost of debt assumed by the regulator and that RPI inflation is equal to a long-run assumption of 3.0%. They are calculated by dividing elements of out or under-performance versus the regulatory contract by the average equity RAV in line with the regulatory assumed capital structure and adding to the base allowed RoE.

This is an important measure of UK regulated business performance and our operational strategy continues to focus on this metric. This measure can be used to determine how we are performing under the RIIO framework and also help investors to compare our performance with similarly regulated UK entities. Reflecting the importance of this metric, it is also a key component of both the APP and LTPP schemes.

The UK RoE is underpinned by the UK RAV. For the reasons noted further above, no reconciliation to IFRS has been presented as we do not believe it would be meaningful.

US Regulated Return on Equity (nominal)

'US Regulated Return on Equity' or 'US Regulated RoE' is a measure of how the businesses are performing against the assumptions used by the regulator. This US operational return measure is calculated using the assumption that the businesses are financed in line with the regulatory adjudicated capital structure. The returns are divided by the average Rate Base (or where a reported Rate Base is not available, an estimate based on Rate Base calculations used in previous rate filings) multiplied by the adjudicated equity portion in the regulatory adjudicated capital structure.

This is an important measure of our US regulated business performance and our operational strategy continues to focus on this metric. This measure can be used to determine how we are performing and also helps investors compare our performance with similarly regulated US entities. Reflecting the importance of this metric, it is also a key component of both the APP and LTPP schemes.

The US return is based on a calculation which gives proportionately more weighting to those jurisdictions which have a greater rate base as measured under US GAAP; there is no equivalent concept of Rate Base under IFRS.

The US RoE is underpinned by the US Rate Base. For the reasons noted further above, no reconciliation to IFRS has been presented as we do not believe it would be meaningful.

Value Added

'Value Added' is a measure that reflects the value to shareholders of our dividend and the growth in National Grid's regulated and non-regulated assets (as measured in our Rate Base, for regulated entities), net of the growth in overall debt. It is a key metric used to measure our performance and underpins our approach to sustainable decision-making and long-term management incentive arrangements.

Value Added is derived using our Regulated Asset Base and, as such, it is not possible to provide a meaningful reconciliation from this measure to an equivalent IFRS measure due to the reasons set out for our Regulated Asset Base.

Financial position, cash flow and net debt

Capital investment

 
                                                              At actual exchange rates      At constant currency 
Year ended 31 March                                             2018     2017     change     2018    2017   change 
                                                                GBPm     GBPm          %     GBPm    GBPm        % 
----------------------------------------------------------  --------  -------  ---------  -------  ------  ------- 
UK Electricity Transmission                                      999    1,027        (3)      999   1,027      (3) 
UK Gas Transmission                                              310      214         45      310     214       45 
US Regulated                                                   2,424    2,247          8    2,424   2,113       15 
NG Ventures and Other                                            341      247         38      341     239       43 
----------------------------------------------------------  --------  -------  ---------  -------  ------  ------- 
Group capex                                                    4,074    3,735          9    4,074   3,593       13 
Equity investment, funding contributions and loans to 
 joint ventures and associates(1)                                177      127         39      177     124       43 
----------------------------------------------------------  --------  -------  ---------  -------  ------  ------- 
Group capital investment                                       4,251    3,862         10    4,251   3,717       14 
----------------------------------------------------------  --------  -------  ---------  -------  ------  ------- 
 

1. Excludes GBP19m (2017: GBP10m) equity contribution to the St William property joint venture.

Net debt, retained cashflow and RCF to net debt metrics

 
 
Year ended 31 March             2018    2017  change 
                                GBPm    GBPm       % 
----------------------------  ------  ------  ------ 
Net debt                      23,002  19,274      19 
Adjusted net debt             22,777  20,290      12 
Retained cashflow (RCF)        2,199   3,020    (27) 
----------------------------  ------  ------  ------ 
RCF / Adjusted net debt (%)      9.7    14.9 
----------------------------  ------  ------  ------ 
 

Regulatory performance measures

Regulated financial performance (pre-tax)

 
Year ended 31 March            2018   2017  change 
                               GBPm   GBPm       % 
----------------------------  -----  -----  ------ 
UK Electricity Transmission   1,262  1,184       7 
UK Gas Transmission             499    499       - 
US Regulated                  1,631  1,359      20 
----------------------------  -----  -----  ------ 
 

Rate base, RAV and invested capital

 
                                           At actual exchange rates      At constant currency 
Year ended 31 March                          2018    2017(1)   change     2018  2017(1)  change 
                                             GBPm       GBPm        %     GBPm     GBPm       % 
---------------------------------------  --------  ---------  -------  -------  -------  ------ 
  UK Electricity Transmission RAV          13,045     12,479        5   13,045   12,479       5 
  UK Gas Transmission RAV                   6,014      5,755        5    6,014    5,755       5 
  Other regulated assets/liabilities        (519)      (479)      (8)    (519)    (479)     (8) 
---------------------------------------  --------  ---------  -------  -------  -------  ------ 
  Total UK regulated and other assets      18,540     17,755        4   18,540   17,755       4 
 
  US rate base                             14,762     15,398      (4)   14,762   13,751       7 
  Other regulated assets                    1,921      1,665       15    1,921    1,487      29 
---------------------------------------  --------  ---------  -------  -------  -------  ------ 
  Total US regulatory and other assets     16,683     17,063      (2)   16,683   15,238       9 
 
Other invested capital                      1,824      2,231     (18)    1,824    1,724       6 
---------------------------------------  --------  ---------  -------  -------  -------  ------ 
Group regulated and other assets           37,047     37,049        -   37,047   34,717       7 
---------------------------------------  --------  ---------  -------  -------  -------  ------ 
 

(1) Restated for opening balance adjustment following the completion of the regulatory reporting pack process in 2017.

 
Value added (GBPm, constant currency)       For the year ended 31 March 2018      For the year ended 31 March 2017 
                                          ------------------------------------  ------------------------------------ 
                                                  2018         2017     change          2017         2016     change 
                                                  GBPm         GBPm       GBPm          GBPm         GBPm       GBPm 
                                          ------------  -----------  ---------  ------------  -----------  --------- 
Total Group regulated and other 
 assets(1)                                      37,047       34,717      2,330        45,895       44,146      1,749 
Net Debt(2)                                   (23,002)     (21,182)    (1,820)      (29,145)     (27,685)    (1,460) 
                                                                           510                                   289 
Dividend paid                                                            1,316                                 1,463 
Share buy-backs                                                            178                                   189 
----------------------------------------  ------------  -----------  ---------  ------------  -----------  --------- 
Value added                                                              2,004                                 1,941 
 
Value added per share (pence)                                             57.9                                  51.6 
----------------------------------------  ------------  -----------  ---------  ------------  -----------  --------- 
 

(1) For the year ended 31 March 2017 total group regulated and other assets included 100% share of RAV of the UK Gas Distribution business.

(2) For the year ended 31 March 2018, net debt of GBP21,182m includes an adjustment for the GBP4bn return of capital. For the year ended 31 March 2017, net debt of GBP29,145m includes an adjustment to exclude the GBP10bn reduction in net debt on the sale of UK Gas Distribution.

(3) Excludes special dividend and share buybacks associated with return of capital post UK Gas Distribution sale.

Return on Equity

 
Year ended 31 March           2018  2017  change 
                                 %     % 
----------------------------  ----  ----  ------ 
UK Electricity Transmission   13.1  13.6   (0.5) 
UK Gas Transmission           10.0  10.8   (0.8) 
US Regulated                   8.9   8.2     0.7 
Group                         12.3  11.7     0.6 
----------------------------  ----  ----  ------ 
 

Regulatory gearing

 
                        At actual exchange rates      At constant currency 
Year ended 31 March      2018     2017      change    2018    2017    change 
                            %        %                   %       % 
--------------------  -------  -------  ----------  ------  ------  -------- 
 
Group                      64       65         (1)      64      62         2 
--------------------  -------  -------  ----------  ------  ------  -------- 
 

METRIC CALCULATIONS

 
 Regulated Financial Performance               2018                         2017 
  (GBPm) 
  (year ended 31 March) 
-----------------------------------  -----------------------  ------------------------------- 
                                      UKET    UKGT    US REG   UKET    UKGT    UKGD    US REG 
 ----------------------------------  ------  ------  -------  ------  ------  ------  ------- 
 Statutory operating profit           1,041    487    1,734    1,361    507     898    1,278 
  Exceptional items/remeasurements      -       -      (36)     11       4       -      435 
 Headline operating profit            1,041    487    1,698    1,372    511     898    1,713 
  Depreciation and amortisation        475     194     635      421     186     214     642 
 ----------------------------------  ------  ------  -------  ------  ------  ------  ------- 
                                      1,516    681    2,333    1,793    697    1,112   2,355 
  Major storms                          -       -      142       -       -       - 
 ----------------------------------  ------  ------  -------  ------  ------  ------  ------- 
                                      1,516    681    2,475    1,793    697    1,112   2,355 
  Regulatory treatment 
   adjustments 
  Movement in UK regulatory 
   "IOUs"                              51     (91)      -      (288)   (120)    16       - 
  US timing                             -       -     (136)      -       -       -     (199) 
  Performance RAV created              83     (16)      -       74     (11)     47       - 
  Pension adjustment                  (49)    (32)     (73)    (47)    (53)    (13)    (155) 
  3% RAV Indexation                    374     173      -       356     168     260      - 
  UK deferred taxation 
   adjustment                          70      18       -       62      39     (24)      - 
  Regulatory depreciation             (852)   (223)   (635)    (800)   (207)   (413)   (642) 
  Fast/slow money adjustment           69     (11)      -       34     (14)    (121)     - 
 Regulated Financial Performance      1,262    499    1,631    1,184    499     864    1,359 
 
 
 
 Group RoE calculation                              2018       2017       2016 
  (year ended 31 March) 
-----------------------------------------------  ---------  ---------  --------- 
  Regulated Financial Performance                  3,392      3,906      3,663 
  Operating profit of other activities              255        204        374 
 Group financial performance                       3,647      4,110      4,037 
-----------------------------------------------  ---------  ---------  --------- 
       Share of post-tax results of 
        joint ventures                              238         63         59 
       Non-controlling interests                    (1)         1         (3) 
       Adjusted group interest charge              (980)     (1,075)     (922) 
       Group tax charge                            (639)      (808)      (753) 
       Tax on adjustments                            27        166         4 
----  -----------------------------------------  ---------  ---------  --------- 
 Group financial performance after 
  interest and tax                                 2,292      2,457      2,422 
-----------------------------------------------  ---------  ---------  --------- 
 
 Opening Rate Base/RAV                             32,446     40,435     36,998 
 Share of Cadent RAV                                512         -          - 
 Opening NBV of non-regulated businesses           1,328      1,579      1,213 
 Joint Ventures                                     459        408        319 
 Opening Goodwill                                  5,626      5,984      5,182 
-----------------------------------------------  ---------  ---------  --------- 
 Opening capital employed                          40,371     48,406     43,712 
 Opening Net Debt(1)                              (21,770)   (27,346)   (24,024) 
-----------------------------------------------  ---------  ---------  --------- 
 Opening Equity                                    18,601     21,060     19,688 
-----------------------------------------------  ---------  ---------  --------- 
 
 Return on Equity                                  12.3%      11.7%      12.3% 
-----------------------------------------------  ---------  ---------  --------- 
 
 

(1) Opening net debt has been adjusted to reflect the impact of the UK Gas Distribution sale.

 
 Regulated Financial Position                                       2017/18 
  (GBPm - constant currency) 
----------------------------------------------------- 
                                                         UKET    UKGT    US REG   Group 
 ----------------------------------------------------  -------  ------  -------  ------- 
 Opening RAV/Rate Base(1)                               12,479   5,755   13,751   31,985 
  In year movement                                       566      259    1,011    1,836 
 Closing RAV/Rate Base                                  13,045   6,014   14,762   33,821 
 
 Opening Other Regulatory Assets and Liabilities(1)     (445)    (34)    1,487    1,008 
  In year movement                                        51     (91)     434      394 
 Closing Other Regulatory Assets and Liabilities        (394)    (125)   1,921    1,402 
 Closing Regulated Financial Position                   12,651   5,889   16,683   35,223 
 

(1) Adjusted to correspond with 2016/17 regulatory filings and calculations

DESCRIPTION OF METRIC CALCULATIONS

Regulated Financial Performance

The Regulated Financial Performance calculation provides a measure of the performance of the regulated operations before the impacts of interest and taxation. It makes adjustments to reported operating profit to reflect the impact of the businesses' regulatory arrangements when presenting financial performance. It reflects both the value realised on behalf of providers of capital in the year and also an estimation of net value created, but not yet realised that is reasonably expected to be realised or returned to customers in future periods under the Group's regulatory arrangements.

The principal adjustments from reported operating profit to regulated financial performance are:

 
 
 Adjustment                                        Calculation 
 US timing, major storms & movement 
  in UK regulatory "IOUs" 
  Revenue related to performance                     US: As per US Timing and major 
  in one year may be recovered in                    storms 
  later years. Revenue may be recovered              UK: Movement in other regulated 
  in one year but be required to                     assets and liabilities. 
  be returned to customers in future 
  years. 
 Performance RAV 
  UK performance efficiencies are                    In year totex outperformance 
  in part remunerated by the creation                multiplied by the appropriate 
  of additional RAV which is expected                regulatory capitalisation 
  to result in future earnings under                 ratio and multiplied by the 
  regulatory arrangements.                           retained company incentive 
                                                     sharing ratio. 
 
   Pension adjustment 
   Cash payments against pension deficits            UK: cash payments against 
   in the UK are recoverable under                   the regulatory proportion 
   regulatory contracts. In US Regulated             of pension deficits in the 
   operations, US GAAP pension charges               UK regulated business. 
   are generally recoverable through                 US: the difference between 
   rates. Revenue recoveries are recognised          IFRS and US GAAP pension charges. 
   under IFRS but payments are not 
   charged against IFRS operating 
   profits in the year. 
 
   3% RAV Indexation 
   Future UK revenues expected to                    UK RAV multiplied by 3% (long-run 
   be set using an asset base adjusted               RPI inflation assumption). 
   for inflation. 
 
   UK deferred taxation adjustment 
   Future UK revenues are expected                   The difference between 1. 
   to recover cash taxation cost including           IFRS underlying EBITDA less 
   the unwinding of deferred taxation                other regulatory adjustments 
   balances created in the current                   and 2. IFRS underlying EBITDA 
   year.                                             less other regulatory adjustments 
                                                     less current taxation (adjusted 
                                                     for interest tax shield) then 
                                                     grossed up at full UK statutory 
                                                     tax rate. 
 
   Regulatory depreciation 
   US and UK regulated revenues include              Regulatory depreciation. 
   allowance for a return of regulatory 
   capital in accordance with regulatory 
   assumed asset lives. This return 
   does not form part of regulatory 
   profit. 
 
  Fast/slow money adjustment 
  The regulatory remuneration of                     Difference between IFRS classification 
  costs incurred is split between                    of costs as operating costs 
  in year revenue allowances and                     or fixed asset additions and 
  the creation of additional RAV.                    the regulatory classification. 
  This does not align with the classification 
  of costs as operating costs and 
  fixed asset additions under IFRS 
  accounting principles. 
 
 

Group Return on Equity

The Group Return on Equity (RoE) calculation provides a measure of the performance of the whole Group compared with the amounts invested by the Group in assets attributable to equity shareholders.

Calculation: Regulatory financial performance, including a long-run assumption of 3.0% RPI inflation, less adjusted interest and adjusted taxation divided by equity investment in assets

-- Adjusted interest removes interest on pensions, capitalised interest and discount unwind on provisions

-- Adjusted taxation adjusts the Group taxation charge for differences between IFRS profit before tax and regulated financial performance less adjusted interest

-- Equity investment in assets is calculated as the total opening UK regulatory asset value, the total opening US rate base plus goodwill plus opening net book value of joint ventures and other activities excluding Cadent plus a 39% share of Cadent RAV, adjusted to reflect debt structure; minus opening net debt as reported under IFRS (adjusted for the impact of the disposal of UK Gas Distribution).

US Regulated Return on Equity (nominal)

US Regulated Return on Equity is a measure of how a business is performing operationally against the assumptions used by the regulator.

This US operational return measure is calculated using the assumption that the businesses are financed in line with the regulatory adjudicated capital structure.

This is a post-tax US GAAP metric as calculated annually. For the current, prior and future year results, this has been calculated on a fiscal basis (e.g. year ended 31 March 2018). Prior to March 2016 this was calculated on a calendar year basis.

Calculation: Regulated net income divided by equity rate base:

-- Regulated net income calculated as US GAAP operating profit less interest on the adjudicated debt portion of the rate base (calculated at the actual rate on long term debt, adjusted where the proportion of long term debt in the capital structure is materially different from the assumed regulatory proportion) less tax at the adjudicated rate

-- Regulated net income is adjusted for earned savings in New York and Narragansett Electric and for certain material specified items

-- Equity rate base for the current year is an estimate based on rate base calculations used in previous rate filings multiplied by the adjudicated equity portion in the regulatory capital structure. For the prior year, equity rate base was an average rate base for the calendar year as reported to the Group's regulators or, where a reported rate base is not available, an estimate based on rate base calculations used in previous rate filings multiplied by the adjudicated equity portion in the regulatory capital structure

UK Regulated Return on Equity (nominal)

UK Regulated Return on Equity is a measure of how a business is performing operationally against the assumptions used by the regulator.

These returns are calculated using the assumption that the businesses are financed in line with the regulatory adjudicated capital structure, at the cost of debt assumed by the regulator and that RPI is equal to a long-run assumption of 3.0%.

Calculation: Base allowed Return on Equity plus or minus the following items

-- Additional allowed revenues/profits earned in the year from incentive schemes, less associated corporation tax charge;

   --      Totex outperformance multiplied by the company sharing factor set by the regulator; and 

-- Revenues (net of associated depreciation and base allowed asset return) allowed in the year associated with incentive performance earned under previous price controls but not yet fully recovered, less associated corporation tax charge (excluding logging up or pensions recovery)

Divided by average equity RAV in line with regulatory assumed capital structure.

PROVISIONAL FINANCIAL TIMETABLE

 
 Date                       Event 
 17 May 2018                2017/18 full year results 
 31 May 2018                Ordinary shares and ADRs go ex-dividend for 
                             2017/18 final dividend 
 1 June 2018                Record date for 2017/18 final dividend 
 7 June 2018                Scrip reference price announced 
 28 June 2018 (5pm London   Scrip election date for 2017/18 final dividend 
  time) 
 30 July 2018               Annual General Meeting, ICC, Birmingham 
 15 August 2018             2017/18 final dividend paid to qualifying shareholders 
 8 November 2018            2018/19 half year results 
 21 November 2018           ADRs go ex-dividend for the 2018/19 interim 
                             dividend 
 22 November 2018           Ordinary shares go ex-dividend for the 2018/19 
                             interim dividend 
 23 November 2018           Record date for 2018/19 interim dividend 
 29 November 2018           Scrip reference price announced 
 7 December 2018            Scrip election date for 2018/19 interim dividend 
 9 January 2019             2018/19 interim dividend paid to qualifying 
                             shareholders 
 

American Depositary Receipt (ADR) Deposit Agreement

National Grid amended the deposit agreement under which the ADRs representing its ordinary shares are issued to allow a fee of up to $0.05 per ADR to be charged for any cash distribution made to ADR holders, including cash dividends. ADR holders who receive cash in relation to the 2017/18 final dividend will be charged a fee of $0.02 per ADR, by the Depositary prior to distribution of the cash dividend.

CAUTIONARY STATEMENT

This announcement contains certain statements that are neither reported financial results nor other historical information. These statements are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These statements include information with respect to National Grid's financial condition, its results of operations and businesses, strategy, plans and objectives. Words such as 'aims', 'anticipates', 'expects', 'should', 'intends', 'plans', 'believes', 'outlook', 'seeks', 'estimates', 'targets', 'may', 'will', 'continue', 'project' and similar expressions, as well as statements in the future tense, identify forward-looking statements. These forward-looking statements are not guarantees of National Grid's future performance and are subject to assumptions, risks and uncertainties that could cause actual future results to differ materially from those expressed in or implied by such forward-looking statements. Many of these assumptions, risks and uncertainties relate to factors that are beyond National Grid's ability to control or estimate precisely, such as changes in laws or regulations, including any arising as a result of the United Kingdom's exit from the European Union, announcements from and decisions by governmental bodies or regulators, including those relating to the role of the UK electricity system operator as well as increased political and economic uncertainty; failure to adequately forecast and respond to disruptions in energy supplies; the timing of construction and delivery by third parties of new generation projects requiring connection; breaches of, or changes in, environmental, climate change and health and safety laws or regulations, including breaches or other incidents arising from the potentially harmful nature of its activities; network failure or interruption, the inability to carry out critical non network operations and damage to infrastructure, due to adverse weather conditions including the impact of major storms as well as the results of climate change, due to counterparties being unable to deliver physical commodities, or due to the failure of or unauthorised access to or deliberate breaches of National Grid's IT systems and supporting technology; performance against regulatory targets and standards and against National Grid's peers with the aim of delivering stakeholder expectations regarding costs and efficiency savings, including those related to investment programmes and remediation plans; and customers and counterparties (including financial institutions) failing to perform their obligations to the Company. Other factors that could cause actual results to differ materially from those described in this announcement include fluctuations in exchange rates, interest rates and commodity price indices; restrictions and conditions (including filing requirements) in National Grid's borrowing and debt arrangements, funding costs and access to financing; regulatory requirements for the Company to maintain financial resources in certain parts of its business and restrictions on some subsidiaries' transactions such as paying dividends, lending or levying charges; inflation or deflation; the delayed timing of recoveries and payments in National Grid's regulated businesses and whether aspects of its activities are contestable; the funding requirements and performance of National Grid's pension schemes and other post-retirement benefit schemes; the failure to attract, train or retain employees with the necessary competencies, including leadership skills, and any significant disputes arising with the National Grid's employees or the breach of laws or regulations by its employees; and the failure to respond to market developments, including competition for onshore transmission, the threats and opportunities presented by emerging technology, development activities relating to changes in the energy mix and the integration of distributed energy resources, and the need to grow the Company's business to deliver its strategy, as well as incorrect or unforeseen assumptions or conclusions (including unanticipated costs and liabilities) relating to business development activity (including acquisitions and disposals) and joint ventures. For further details regarding these and other assumptions, risks and uncertainties that may impact National Grid, please read the Strategic Report section and the 'Risk factors' on pages 180 to 183 of National Grid's most recent Annual Report and Accounts, as updated by National Grid's unaudited half-year financial information for the six months ended 30 September 2017 published on 9 November 2017. In addition, new factors emerge from time to time and National Grid cannot assess the potential impact of any such factor on its activities or the extent to which any factor, or combination of factors, may cause actual future results to differ materially from those contained in any forward-looking statement. Except as may be required by law or regulation, the Company undertakes no obligation to update any of its forward-looking statements, which speak only as of the date of this announcement.

 
Consolidated income statement 
 for the years ended 31 March 
                                                                                 Exceptional 
                                               Before exceptional   items and remeasurements 
2018                                                    items and               (see note 3) 
 GBPm                              Notes           remeasurements                                Total 
Continuing operations 
 Revenue                           2(a)                    15,250                          -    15,250 
Operating costs                      3                   (11,793)                         36  (11,757) 
Operating profit                   2(b)                     3,457                         36     3,493 
Finance income                       4                        154                          -       154 
Finance costs                       3,4                   (1,128)                        229     (899) 
Share of post-tax results of 
 joint ventures and associates                                167                      (207)      (40) 
Profit before tax                 2(b),3                    2,650                         58     2,708 
Tax                                  5                      (589)                      1,473       884 
Profit after tax from 
 continuing 
 operations                          3                      2,061                      1,531     3,592 
Loss after tax from 
 discontinued 
 operations                          8                          -                       (41)      (41) 
Total profit for the year 
 (continuing 
 and discontinued)                                          2,061                      1,490     3,551 
Attributable to: 
Equity shareholders of the 
 parent                                                     2,060                      1,490     3,550 
Non-controlling interests(1)                                    1                          -         1 
Earnings per share (pence) 
Basic earnings per share 
 (continuing)                        6                                                           103.8 
Diluted earnings per share 
 (continuing)                        6                                                           103.3 
Basic earnings per share 
 (continuing 
 and discontinued)                   6                                                           102.6 
Diluted earnings per share 
 (continuing 
 and discontinued)                   6                                                           102.1 
 
              1. The non-controlling interests for the year ended 31 March 2018 relate 
              to continuing operations. 
                                                                                 Exceptional 
                                               Before exceptional   items and remeasurements 
2017(2)                                                 items and               (see note 3) 
 GBPm                              Notes           remeasurements                                Total 
Continuing operations 
 Revenue                           2(a)                    15,035                          -    15,035 
Operating costs                      3                   (11,262)                      (565)  (11,827) 
Operating profit                   2(b)                     3,773                      (565)     3,208 
Finance income                       4                         53                          -        53 
Finance costs                       3,4                   (1,082)                       (58)   (1,140) 
Share of post-tax results of 
 joint ventures and associates                                 63                          -        63 
Profit before tax                 2(b),3                    2,807                      (623)     2,184 
Tax                                  5                      (666)                        292     (374) 
Profit after tax from 
 continuing 
 operations                          3                      2,141                      (331)     1,810 
Profit after tax from 
 discontinued 
 operations                          8                        606                      5,378     5,984 
Total profit for the year 
 (continuing 
 and discontinued)                                          2,747                      5,047     7,794 
Attributable to: 
Equity shareholders of the 
 parent                                                     2,747                      5,048     7,795 
Non-controlling interests(3)                                    -                        (1)       (1) 
Earnings per share (pence) 
Basic earnings per share 
 (continuing)                        6                                                            48.1 
Diluted earnings per share 
 (continuing)                        6                                                            47.9 
Basic earnings per share 
 (continuing 
 and discontinued)                   6                                                           207.1 
Diluted earnings per share 
 (continuing 
 and discontinued)                   6                                                           206.2 
 
 

2. Comparatives have been re-presented to reflect the change to a columnar format (see note 1).

3. The non-controlling interests for the year ended 31 March 2017 relate to discontinued operations.

 
Consolidated statement of comprehensive income 
 for the years ended 31 March 
                                                                          Note   2018     2017 
                                                                                 GBPm     GBPm 
 
Profit after tax from continuing operations                                     3,592    1,810 
 
Other comprehensive income from continuing operations 
Items from continuing operations that will never 
 be reclassified to profit or loss: 
 Remeasurement gains of pension assets and post-retirement 
  benefit obligations                                                           1,313      423 
 Share of other comprehensive income of associates, 
  net of tax(1)                                                                   142        - 
 Tax on items that will never be reclassified to 
  profit or loss                                                                (530)    (277) 
Total items from continuing operations that will 
 never be reclassified to profit or loss                                          925      146 
 
Items from continuing operations that may be reclassified 
 subsequently to profit or loss: 
 Exchange adjustments                                                           (505)      346 
 Net gains in respect of cash flow hedges                                          19       70 
 Transferred to profit or loss in respect of cash 
  flow hedges                                                                     (3)      (6) 
 Net (losses)/gains on available-for-sale investments                            (30)       81 
 Transferred to profit or loss on sale of available-for-sale 
  investments                                                                    (73)     (25) 
 Share of other comprehensive income of associates, 
  net of tax(1)                                                                     5        - 
 Tax on items that may be reclassified subsequently 
  to profit or loss                                                                33     (34) 
Total items from continuing operations that may be 
 reclassified subsequently to profit or loss                                    (554)      432 
 
 
Other comprehensive income for the year, net of tax 
 from continuing operations                                                       371      578 
Other comprehensive income for the year, net of tax 
 from discontinued operations                                                8      -       42 
Other comprehensive income for the year, net of tax                               371      620 
 
 
Total comprehensive income for the year from continuing 
 operations                                                                     3,963    2,388 
Total comprehensive income for the year from discontinued 
 operations                                                                  8   (41)    6,026 
Total comprehensive income for the year                                         3,922    8,414 
 
Attributable to: 
Equity shareholders of the parent 
 From continuing operations                                                     3,963    2,389 
 From discontinued operations                                                    (41)    6,026 
                                                                                3,922    8,415 
Non-controlling interests 
 From continuing operations                                                         -      (1) 
      1. The share of other comprehensive income of associates relates 
       to items of other comprehensive income of Cadent (investment through 
       Quadgas HoldCo Limited), comprising GBP142 million (2017: GBPnil) 
       remeasurement gains on pension assets and post-retirement benefit 
       obligations and a GBP5 million (2017: GBPnil) net gain in respect 
       of cash flow hedges. Both items are shown net of tax. 
 
 
 
 
  Consolidated statement of changes in equity 
  for the years ended 31 March 
                                            Share                 Other            Total 
                                  Share   premium   Retained     equity   share-holders'  Non-controlling    Total 
                                capital   account   earnings   reserves           equity        interests   equity 
                         Note      GBPm      GBPm       GBPm       GBPm             GBPm             GBPm     GBPm 
 
At 1 April 2016                     447     1,326     16,305    (4,523)           13,555               10   13,565 
Profit/(loss) for the year            -         -      7,795          -            7,795              (1)    7,794 
Total other comprehensive 
 income 
 for the year                         -         -         84        536              620                -      620 
Total comprehensive 
 income/(loss) 
 for the year                         -         -      7,879        536            8,415              (1)    8,414 
Equity dividends              7       -         -    (1,463)          -          (1,463)                -  (1,463) 
Scrip dividend related share 
 issue(1)                             2       (2)          -          -                -                -        - 
Purchase of treasury shares           -         -      (189)          -            (189)                -    (189) 
Issue of treasury shares              -         -         18          -               18                -       18 
Purchase of own shares                -         -        (6)          -              (6)                -      (6) 
Other movements in 
 non-controlling 
 interests                            -         -          -          -                -                7        7 
Share-based payments                  -         -         35          -               35                -       35 
Tax on share-based payments           -         -          3          -                3                -        3 
At 31 March 2017                    449     1,324     22,582    (3,987)           20,368               16   20,384 
Profit for the year                   -         -      3,550          -            3,550                1    3,551 
Total other comprehensive 
 income/(loss) 
 for the year                         -         -        925      (553)              372              (1)      371 
Total comprehensive 
 income/(loss) 
 for the year                         -         -      4,475      (553)            3,922                -    3,922 
Equity dividends              7       -         -    (4,487)          -          (4,487)                -  (4,487) 
Scrip dividend related share 
 issue(1)                             3       (3)          -          -                -                -        - 
Purchase of treasury shares           -         -    (1,017)          -          (1,017)                -  (1,017) 
Issue of treasury shares              -         -         33          -               33                -       33 
Purchase of own shares                -         -        (5)          -              (5)                -      (5) 
Share-based payments                  -         -         16          -               16                -       16 
Tax on share-based payments           -         -          2          -                2                -        2 
 
At 31 March 2018(2)                 452     1,321     21,599    (4,540)           18,832               16   18,848 
                    1. Included within the share premium account are costs associated 
                                          with scrip dividends. 
                     2. Refer to note 7 for the effect of the share consolidation and 
                                            special dividend. 
 
 
 
 
Consolidated statement of financial position 
 as at 31 March 
 
                                                      2018      2017 
                                                      GBPm      GBPm 
 
Non-current assets 
Goodwill                                             5,444     6,096 
Other intangible assets                                899       923 
Property, plant and equipment                       39,853    39,825 
Other non-current assets                               115        69 
Pension assets                                       1,409       603 
Financial and other investments                        899     1,100 
Investments in joint ventures and associates         2,168     2,083 
Derivative financial assets                          1,319     1,567 
 
Total non-current assets                            52,106    52,266 
 
Current assets 
Inventories and current intangible assets              341       403 
Trade and other receivables                          2,798     2,728 
Current tax assets                                     114       317 
Financial and other investments                      2,694     8,741 
Derivative financial assets                            405       246 
Cash and cash equivalents                              329     1,139 
 
Total current assets                                 6,681    13,574 
 
Total assets                                        58,787    65,840 
 
Current liabilities 
Borrowings                                         (4,447)   (5,496) 
Derivative financial liabilities                     (401)   (1,147) 
Trade and other payables                           (3,453)   (3,345) 
Current tax liabilities                              (123)     (107) 
Provisions                                           (273)     (416) 
 
Total current liabilities                          (8,697)  (10,511) 
 
Non-current liabilities 
Borrowings                                        (22,178)  (23,142) 
Derivative financial liabilities                     (660)   (1,246) 
Other non-current liabilities                      (1,317)   (1,370) 
Deferred tax liabilities                           (3,636)   (4,479) 
Pensions and other post-retirement benefit 
 obligations                                       (1,672)   (2,536) 
Provisions                                         (1,779)   (2,172) 
 
Total non-current liabilities                     (31,242)  (34,945) 
 
Total liabilities                                 (39,939)  (45,456) 
 
Net assets                                          18,848    20,384 
 
Equity 
Share capital                                          452       449 
Share premium account                                1,321     1,324 
Retained earnings                                   21,599    22,582 
Other equity reserves                              (4,540)   (3,987) 
 
Total shareholders' equity                          18,832    20,368 
Non-controlling interests                               16        16 
 
Total equity                                        18,848    20,384 
 
 

1. Comparative amounts have been represented to reflect the reclassification of commodity derivative contracts from trade and other receivables and payables, and from other non-current assets and liabilities, to derivative financial assets and derivative financial liabilities.

 
Consolidated cash flow statement 
 for the years ended 31 March 
                                                               2018     2017 
                                                     Notes     GBPm     GBPm 
 
Cash flows from operating activities 
Total operating profit from continuing 
 operations                                           2(b)    3,493    3,208 
Adjustments for: 
  Exceptional items and remeasurements                   3     (36)      565 
  Depreciation, amortisation and impairment                   1,530    1,481 
  Share-based payments charge                                    16       32 
  Changes in working capital                                    118      151 
  Changes in provisions                                       (206)    (181) 
  Changes in pensions and other post-retirement 
   benefit obligations                                        (239)    (768) 
Cash flows relating to exceptional items                         26     (36) 
 
Cash generated from operations - continuing 
 operations                                                   4,702    4,452 
Tax recovered/(paid)                                              8    (132) 
 
Net cash inflows from operating activities 
 - continuing operations                                      4,710    4,320 
 
Net cash (used in)/inflows from operating 
 activities - discontinued operations                    8    (207)      909 
 
Cash flows from investing activities 
Acquisition of investments                                      (2)        - 
Investments in joint ventures and associates                  (129)     (76) 
Loans to joint ventures and associates                         (68)     (61) 
Disposal of investments                                         134        - 
Disposal of UK Gas Distribution                                (20)    5,454 
Purchases of intangible assets                                (173)    (223) 
Purchases of property, plant and equipment                  (3,738)  (3,296) 
Disposals of property, plant and equipment                       10       18 
Dividends received from joint ventures 
 and associates                                                 213       99 
Interest received                                                57       51 
Net movements in short-term financial 
 investments                                                  5,953  (5,600) 
 
Net cash flow from/(used in) investing 
 activities - continuing operations                           2,237  (3,634) 
 
Net cash flow used in investing activities 
 - discontinued operations                               8        -    (680) 
 
Cash flows from financing activities 
Purchase of treasury shares                                 (1,017)    (189) 
Proceeds from issue of treasury shares                           33       18 
Purchase of own shares                                          (5)      (6) 
Proceeds received from loans                                  1,941    2,463 
Repayments of loans                                         (2,156)  (1,616) 
Net movements in short-term borrowings 
 and derivatives                                              (772)       90 
Interest paid                                                 (853)    (839) 
Dividends paid to shareholders                              (4,487)  (1,463) 
 
Net cash flow used in financing activities 
 - continuing operations                                    (7,316)  (1,542) 
 
Net cash flow (used in)/from financing 
 activities - discontinued operations                    8    (231)    1,611 
 
Net (decrease)/increase in cash and cash 
 equivalents                                             9    (807)      984 
Disposal of bank overdraft in UK Gas Distribution                 -       15 
Exchange movements                                              (3)       16 
Net cash and cash equivalents at start 
 of year                                                      1,139      124 
 
Net cash and cash equivalents at end of 
 year                                                           329    1,139 
 
 

Notes

1. Basis of preparation and new accounting standards, interpretations and amendments

The full year financial information contained in this announcement, which does not constitute statutory accounts as defined in Section 434 of the Companies Act 2006, has been derived from the statutory accounts for the year ended 31 March 2018, which will be filed with the Registrar of Companies in due course. Statutory accounts for the year ended 31 March 2017 have been filed with the Registrar of Companies. The auditors' report on each of these statutory accounts was unqualified and did not contain a statement under Section 498 of the Companies Act 2006.

The full year financial information has been prepared in accordance with the accounting policies applicable for the year ended 31 March 2018 which are consistent with those applied in the preparation of our accounts for the year ended 31 March 2017.

This year we have adopted a columnar presentation for our income statement as we consider it improves the clarity of the presentation, and is consistent with the way that financial performance is measured by management and reported to the Board and Executive Committee, and better enables users of the financial statements to understand the results. The inclusion of total profit for the period from continuing operations before exceptional items and remeasurements forms part of the incentive target set annually for remunerating certain Executive Directors and accordingly we believe it is important for users of the financial statements to understand how this compares to our results on a statutory basis and year on year.

The following standards, interpretations and amendments, issued by the IASB as adopted and by the IFRS Interpretations Committee (IFRIC), and as adopted by the EU, are effective for the year ended 31 March 2018. None of the pronouncements had a material impact on the Company's consolidated results or assets and liabilities for the year ended 31 March 2018.

   --        Annual improvements to IFRSs 2014-2016 Cycle; 
   --        Amendments to IAS 7 'Statement of Cash Flows'; and 
   --        Amendments to IAS 12 'Income Taxes'. 

New accounting standards not yet adopted

i) IFRS 9 'Financial Instruments'

IFRS 9 'Financial Instruments' is effective for National Grid for the year ending 31 March 2019. The change to IFRS 9 principally impacts the accounting for the classification and measurement of financial instruments, impairment of financial assets and hedge accounting. The Group has elected not to restate comparatives on initial application of IFRS 9. The full impact of adopting IFRS 9 will depend on the financial instruments that the Group has during the year ending 31 March 2019 as well as on economic conditions and judgements made as at the year end. The Group has performed an assessment of the potential impact of adopting IFRS 9 based on the financial instruments and hedging relationships as at the date of adoption of IFRS 9 (1 April 2018). It is not expected that the adoption of IFRS 9 will materially impact our profits or net assets on transition or prospectively.

ii) IFRS 15 'Revenue from Contracts with Customers'

IFRS 15 'Revenue from Contracts with Customers' is effective for National Grid for the year ending 31 March 2019. The new standard provides enhanced detail and a five-step revenue recognition approach to reflect the transfer of goods and services to customers. The core principle of IFRS 15 is that an entity recognises revenue related to the transfer of promised goods or services when control of the goods or services passes to customers. We will adopt the modified retrospective approach whereby the historical cumulative transition adjustment is reflected through retained earnings. There are two types of revenue arrangements that will be impacted on transition to IFRS 15:

-- There are certain pass through costs where the agency/principal assessment changes under IFRS 15. In moving from a risk and reward model to a control model under IFRS 15, there are certain pass through revenues principally relating to revenues collected on behalf of the Scottish and Offshore transmission operators where we will no longer act as principal. If we had adopted IFRS 15 in 2017/18, both revenues and operating costs would have been GBP1,056m lower.

-- Across our subsidiaries in the UK and US our customers provide contributions in advance for certain capital works (principally for connections across the UK and the US and for diversions in the UK). IFRS 15 has changed how revenue is recognised. Under IFRS 15, we will defer revenues over the life of the connection because our customers cannot benefit from a connection without the use of our utility network; access to our network through the connection is satisfied over time. For diversions, revenues will be recorded on completion of the work as there are no ongoing performance obligations to satisfy. Had we adopted IFRS 15 in 2017/18, revenues would have been approximately GBP83 million lower, as revenues from connections in the US and UK Gas Transmission that were previously recognised up-front are deferred over the life of the network. The decrease in profit after tax in our subsidiaries would have been GBP56 million.

The transition adjustment through retained earnings of GBP167 million will result in an increase to deferred revenues of approximately GBP240 million and a corresponding deferred tax impact of GBP73 million.

Date of approval

This announcement was approved by the Board of Directors on 16 May 2018.

2. Segmental analysis

Revenue and the results of the business analysed by operating segment are presented based on the information the Board of Directors uses internally for the purposes of evaluating the performance of operating segments and determining resource allocation between operating segments. The Board is National Grid's chief operating decision-making body (as defined by IFRS 8 'Operating Segments') and assesses the profitability of operations principally on the basis of operating profit before exceptional items and remeasurements (see note 3). As a matter of course, the Board also considers profitability by segment, excluding the effect of timing. However, the measure of profit disclosed in this note is operating profit before exceptional items and remeasurements as this is the measure that is most consistent with the IFRS results reported within our financial statements.

The following table describes the main activities for each reportable operating segment:

 
UK Electricity       High voltage electricity transmission networks in England 
 Transmission         and Wales. 
UK Gas Transmission  High-pressure gas transmission network in England and 
                      Wales and UK liquefied natural gas (LNG) storage activities. 
US Regulated         Gas distribution networks, electricity distribution 
                      networks and high voltage electricity transmission networks 
                      in New York and New England and electricity generation 
                      facilities in New York. 
 

NG Ventures was formed on 1 April 2017 and brought together our businesses that are adjacent to our core regulated operations to create a new division with its own leadership. NG Ventures is led by a member of the Group Executive and its results are reported separately to the Board of Directors. This operating segment represents our key strategic growth area outside of our regulated core in competitive markets across the US and the UK. The business comprises all commercial operations in metering, LNG at the Isle of Grain and electricity interconnectors, with a focus on investment and future activities in emerging growth areas. NG Ventures does not meet the thresholds set out in IFRS 8 to be identified as a separate reportable segment and therefore its results have not been disaggregated. The results of the businesses that now form NG Ventures were previously reported in the Other activities segment and therefore, although the segment has been renamed NG Ventures and Other, the results of previous periods have not been affected.

Other activities that do not form part of any of the segments in the above table primarily relate to UK property development together with insurance and corporate activities in the UK and US geographical areas.

Discontinued operations in 2017 comprises the profits and losses associated with the UK Gas Distribution business, up to and including the point at which it was sold to Quadgas HoldCo Limited (see note 8). In the current year, transactions within discontinued operations relate solely to the business prior to the sale and the sale transaction itself.

Revenue primarily represents the sales value derived from the generation, transmission and distribution of energy, together with the sales value derived from the provision of other services to customers. It excludes value added (sales) tax and intra-group sales. Revenue includes an assessment of unbilled energy and transportation services supplied to customers between the date of the last meter reading and the year-end. This is estimated based on historical consumption and weather patterns.

Where revenue exceeds the maximum amount permitted by a regulatory agreement, adjustments will be made to future prices to reflect this over-recovery. No liability is recognised, as such an adjustment relates to the provision of future services. Similarly, no asset is recognised where a regulatory agreement permits adjustments to be made to future prices in respect of an under-recovery. As part of our regulatory agreements we are entitled to recover certain costs directly from customers (pass-through costs). These amounts are included in the overall calculation of revenue as stipulated by regulatory agreements.

Sales between operating segments are priced considering the regulatory and legal requirements to which the businesses are subject. The analysis of revenue by geographical area is on the basis of destination, with no material sales between the UK and US geographical areas.

   (a)   Revenue 
 
                                                         2018    2017 
                                                         GBPm    GBPm 
Operating segments: 
  UK Electricity Transmission                           4,154   4,439 
  UK Gas Transmission                                   1,091   1,080 
  US Regulated                                          9,272   8,931 
NG Ventures and Other(1)                                  776     713 
Sales between segments                                   (43)   (128) 
Total from continuing operations                       15,250  15,035 
Split by geographical areas - continuing operations 
  UK                                                    5,938   6,064 
  US                                                    9,312   8,971 
 
                                                       15,250  15,035 
 
 

1. Included within NG Ventures and Other is GBP593 million (2017: GBP604 million) of revenue relating to NG Ventures.

2. Segmental analysis continued

   (b)   Operating profit from continuing operations 

A reconciliation of the operating segments' measure of profit to profit before tax from continuing operations is provided below. Further details of the exceptional items and remeasurements are provided in note 3.

 
                                                       Before exceptional            After exceptional 
                                                     items and remeasurements     items and remeasurements 
 
                                                             2018         2017         2018            2017 
                                                             GBPm         GBPm         GBPm            GBPm 
Operating segments - continuing operations: 
  UK Electricity Transmission                               1,041        1,372        1,041           1,361 
  UK Gas Transmission                                         487          511          487             507 
  US Regulated                                              1,698        1,713        1,734           1,278 
NG Ventures and Other(1)                                      231          177          231              62 
Total operating profit from continuing 
 operations                                                 3,457        3,773        3,493           3,208 
Split by geographical areas - continuing 
 operations 
  UK                                                        1,840        2,118        1,840           1,988 
  US                                                        1,617        1,655        1,653           1,220 
 
                                                            3,457        3,773        3,493           3,208 
 
Below we reconcile total operating profit from continuing operations 
 to profit before tax from continuing operations. We have shown the share 
 of post-tax results of joint ventures and associates disaggregated between 
 those held within NG Ventures and Other and our retained 39% interest 
 in the UK Gas Distribution business ('Cadent'(2) ). Operating exceptional 
 items and remeasurements of GBPnil (2017: GBP11 million) detailed in 
 note 3 are attributable to UK Electricity Transmission; GBPnil (2017: 
 GBP4 million) to UK Gas Transmission; GBP36 million (2017: GBP435 million) 
 to US Regulated; and GBPnil (2017: GBP115 million) to NG Ventures and 
 Other. 
 
Reconciliation to profit before tax: 
  Operating profit from continuing operations               3,457        3,773        3,493           3,208 
  Finance income                                              154           53          154              53 
  Finance costs                                           (1,128)      (1,082)        (899)         (1,140) 
  Share of post-tax results of joint 
   ventures and associates 
       Cadent(2)                                              123            -         (89)               - 
       NG Ventures and Other                                   44           63           49              63 
Profit before tax from continuing operations                2,650        2,807        2,708           2,184 
 
 

1. Included within NG Ventures and Other is GBP234 million (2017: GBP239 million) of operating profit (both before and after exceptional items and remeasurements) relating to NG Ventures.

   2.       Investment held through Quadgas HoldCo Limited. 

(c) Capital expenditure

 
                                     Net book value of         Capital expenditure(1)    Depreciation and 
                                     property plant and                                    amortisation 
                                     equipment and other 
                                      intangible assets 
                                                2018    2017        2018          2017      2018      2017 
                                                GBPm    GBPm        GBPm          GBPm      GBPm      GBPm 
Operating segments 
  UK Electricity Transmission                 13,028  12,515         999         1,027     (475)     (421) 
  UK Gas Transmission                          4,280   4,165         310           214     (194)     (186) 
  US Regulated                                20,953  21,638       2,424         2,247     (635)     (642) 
NG Ventures and Other(2)                       2,491   2,430         341           247     (226)     (232) 
Total from continuing 
 operations                                   40,752  40,748       4,074         3,735   (1,530)   (1,481) 
Split by geographical areas - 
 continuing operations: 
  UK                                          18,772  18,102       1,527         1,357     (804)     (753) 
  US                                          21,980  22,646       2,547         2,378     (726)     (728) 
 
                                              40,752  40,748       4,074         3,735   (1,530)   (1,481) 
By asset type 
  Property, plant and 
   equipment                                  39,853  39,825       3,901         3,507   (1,392)   (1,348) 
  Non-current intangible 
   assets                                        899     923         173           228     (138)     (133) 
 
Total from continuing 
 operations                                   40,752  40,748       4,074         3,735   (1,530)   (1,481) 
 
 
 
 

1. Represents additions to property, plant and equipment and non-current intangibles but excludes additional investments in and loans to joint ventures and associates.

2. Included within NG Ventures and Other are assets with a net book value of GBP1,454 million (2017: GBP1,432 million), capital expenditure of GBP186 million (2017: GBP98 million) and depreciation and amortisation of GBP143 million (2017: GBP143 million) relating to NG Ventures.

3. Exceptional items and remeasurements

Exceptional items and remeasurements are items of income and expenditure that, in the judgement of management, should be disclosed separately on the basis that they are important to an understanding of our financial performance and significantly

distort the comparability of financial performance between periods. Remeasurements comprise gains or losses recorded in the

income statement (which can vary significantly from one period to the next) arising from changes in the fair value of

commodity contracts and of derivative financial instruments to the extent that hedge accounting is not achieved or is not

effective. These fair values increase or decrease because of changes in commodity and financial indices and prices over

which we have no control.

 
                                                                 2018   2017 
Continuing operations                                            GBPm   GBPm 
 
Included within operating profit: 
Exceptional items: 
 Environmental charges                                              -  (526) 
 Gas holder demolition costs                                        -  (107) 
 Final settlement of LIPA MSA Transition                           26      - 
                                                                   26  (633) 
Remeasurements: 
 Commodity contract derivatives                                    10     68 
 
                                                                   36  (565) 
 
Included within finance costs: 
Remeasurements: 
 Net gains on derivative financial instruments                    229   (58) 
 
 
Included within share of post-tax results of associates 
 and joint ventures: 
Remeasurements: 
 Net losses on derivative financial instruments                     1      - 
Exceptional items: 
 Impairment of investment in Quadgas HoldCo Limited             (213)      - 
 Deferred tax arising on the reduction of the US corporation 
  tax rate                                                          5      - 
                                                                (207)      - 
 
Total included within profit before tax                            58  (623) 
 
Included within tax: 
Exceptional items: credits arising on items not included 
 in profit before tax: 
 Deferred tax credit arising on the reduction in the 
  UK corporation tax rate                                           -     94 
 Deferred tax credit arising on the reduction in the 
  US corporation tax rate                                       1,510      - 
Tax on exceptional items                                          (9)    227 
Tax on remeasurements                                            (28)   (29) 
 
                                                                1,473    292 
 
Total exceptional items and remeasurements after tax            1,531  (331) 
 
Analysis of total exceptional items and remeasurements after 
 tax: 
Exceptional items after tax                                     1,319  (312) 
Remeasurements after tax                                          212   (19) 
 
Total exceptional items and remeasurements after tax            1,531  (331) 
 
 

Operating exceptional items

2017/18

During the year, the Group reached an agreement with LIPA on an amount in final settlement of receivables and payables that arose following the cessation of the Management Services Agreement (MSA) with LIPA in December 2013. The settlement has resulted in a gain of GBP26 million, which has been recorded as exceptional, consistent with the treatment of gains and losses on the original transaction.

In assessing the value of the Group's interests in Quadgas HoldCo Limited (the holding Company for Cadent Gas) at 31 March 2018, the Company has considered the fair market value of its interests as implied by the agreement relating to a potential sale of a 25% interest in Quadgas (for equity and shareholder loans), announced on 1 May 2018 and described in note 14.

3. Exceptional items and remeasurements continued

The associated accounting implications are the recognition of a GBP110 million fair value gain on the Further Acquisition Agreement (FAA) which is detailed in the remeasurements section below and a GBP213 million impairment against the equity carrying value of investment in Quadgas HoldCo Limited.

We have assessed the carrying value of all our interests in Quadgas (including the FAA derivative asset noted above) against the cash flows we expect to receive under the agreement for the 25% (comprising future dividends, shareholder loan interest income and the proceeds on exercise of the option arrangement plus a cost of carry), discounted to present value derived using an estimate of Quadgas Investments BidCo Limited's marginal cost of borrowing. Following the recognition of this charge, the total carrying value of our interests in Quadgas HoldCo Limited is GBP2.1 billion. Neither of these two accounting entries are taxable.

2016/17

In the US, the Group's most significant environmental liabilities relate to former manufacturing gas plant (MGP) facilities formerly owned or operated by the Group. The sites are subject to both state and federal law in the US. The expenditure is expected to be largely recoverable from rate payers but under IFRS, no asset can be recorded for this. During the second half of 2016/17, the Group updated its assessment of the gross remediation costs at three key sites in New York, resulting in an increase of GBP481m on an undiscounted basis.

The charge booked reflects the Group's best estimate of future cash outflow, based on notices received from state and federal authorities, and plans developed in response, supported by external consultants where appropriate. In some cases, judgement is also required regarding the Group's share of the estimated cost, principally at sites where other parties are also potentially liable but where no cost sharing agreement exists.

Also included within the above are charges relating to the impact of a change in the real discount rate from 2% to 1% on our provisions.

A provision of GBP107m has been made for the demolition of certain non-operational gas holders in the UK. Following the disposal of UK Gas Distribution, the land on which the gas holders are sited was transferred to the Group's UK property division. The Group's property division maximises our return from our land portfolio and therefore a constructive obligation exists to demolish the gas holders.

Remeasurements

Commodity contract derivatives represent mark-to-market movements on certain physical and financial commodity contract obligations in the US. These contracts primarily relate to the forward purchase of energy for supply to customers, or to the economic hedging thereof, that are required to be measured at fair value and that do not qualify for hedge accounting. Under the existing rate plans in the US, commodity costs are recoverable from customers although the timing of recovery may differ from the pattern of costs incurred.

Net (losses)/gains on derivative financial instruments of GBP119 million (2017: GBP58 million) comprise (losses)/gains arising on derivative financial instruments reported in the income statement. These exclude gains and losses for which hedge accounting has been effective, which have been recognised directly in other comprehensive income or which are offset by adjustments to the carrying value of debt.

The Further Acquisition Agreement (FAA) signed on 31 March 2017 relating to a 14% interest in the equity and shareholder loans of Quadgas HoldCo Limited is treated as a derivative at fair value through profit and loss. In assessing the fair value of this derivative at 31 March 2018, we have compared the pricing mechanism within the FAA against that of the agreement concerning our remaining 25% interest. The GBP110 million gain reflects the pricing differential between the two contracts. At 31 March 2017, being the date on which the FAA was signed, the fair value was taken to be zero.

Net gains on financial instruments comprise the gains on financial instruments of Quadgas HoldCo Limited reported through their income statement.

Items included within tax

The 'Tax Cuts and Jobs Act' which was enacted on 22 December 2017 reduced the US corporate rate from 35% to 21% with effect from 1 January 2018. Deferred taxes at the reporting date have been measured using these enacted tax rates and reflected in these financial statements, resulting in a deferred tax credit.

The Finance Act 2016 which was enacted on 15 September 2016 reduced the main rate of UK corporation tax to 17% with effect from 1 April 2020. Deferred tax balances have been calculated at this rate for the years ended 31 March 2017 and 31 March 2018.

4. Finance income and costs

 
 
                                                          2018     2017 
                                                          GBPm     GBPm 
 
Finance income 
Bank deposits and other financial assets                    81       28 
Gains on disposal of available-for-sale investments         73       25 
                                                           154       53 
 
Finance costs 
Net interest on pension and other post-retirement 
 benefit obligations                                      (65)    (107) 
Interest expense on financial instruments              (1,105)    (994) 
Unwinding of discount on provisions                       (75)     (73) 
Other interest                                            (11)     (17) 
Less: interest capitalised(1)                              128      109 
 
Finance costs before exceptional items and 
 remeasurements                                        (1,128)  (1,082) 
 
Remeasurements: 
 Net gains / (losses) on derivative financial 
  instruments(2,) (3, 4)                                   229     (58) 
 
Exceptional items and remeasurements included 
 within finance costs                                      229     (58) 
 
Finance costs                                            (899)  (1,140) 
 
Net finance costs from continuing operations             (745)  (1,087) 
 

1. Interest on funding attributable to assets in the course of construction in the current year was capitalised at a rate of 4.1% (2017: 3.4%). In the UK, capitalised interest qualifies for a current year tax deduction with tax relief claimed of GBP20 million (2017: GBP18 million). In the US, capitalised interest is added to the cost of plant and qualifies for tax depreciation allowances.

2. Includes a net foreign exchange loss on financing activities of GBP314 million (2017: GBP264 million loss) offset by foreign exchange gains and losses on derivative financial instruments measured at fair value.

3. Includes a net loss on instruments designated as fair value hedges of GBP90 million (2017: GBP27 million loss) and a net gain of GBP124 million (2017: GBP60 million gain) arising from fair value adjustments to the carrying value of debt.

4. Includes GBP110 million gain on the Further Acquisition Agreement (FAA) derivative financial instrument relating to the put/call option over a 14% interest in Quadgas HoldCo Limited. Further details can be found in note 3.

5. Tax

Tax (credited)/charged to the income statement - continuing operations

 
 
                                                               2018   2017 
                                                               GBPm   GBPm 
 
Tax before exceptional items and remeasurements                 589    666 
Exceptional tax on items not included in profit before 
 tax (note 3)                                               (1,510)   (94) 
Tax on other exceptional items and remeasurements                37  (198) 
Tax on total exceptional items and remeasurements 
 (note 3)                                                   (1,473)  (292) 
 
Total tax (credit)/charge from continuing operations          (884)    374 
 
Tax as a percentage of profit before tax                          %% 
 
Before exceptional items and remeasurements - continuing 
 operations                                                    22.2   23.7 
After exceptional items and remeasurements - continuing 
 operations                                                  (32.6)   17.1 
 
 
The tax (credit)/charge for the year can be analysed 
 as follows: 
                                                               GBPm   GBPm 
 
Current tax 
UK corporation tax at 19% (2017: 20%)                           205    225 
UK corporation tax adjustment in respect of prior 
 years                                                         (18)   (47) 
Overseas corporation tax                                         15- 
Overseas corporation tax adjustment in respect of 
 prior years                                                    (4)1 
 
Total current tax from continuing operations                    198    179 
 
Deferred tax 
UK deferred tax                                                  65    (9) 
UK deferred tax adjustment in respect of prior years            (2)   (18) 
Overseas deferred tax                                       (1,155)    224 
Overseas deferred tax adjustment in respect of prior 
 years                                                           10    (2) 
 
Total deferred tax from continuing operations               (1,082)    195 
 
Total tax (credit)/charge from continuing operations          (884)    374 
 
 

Factors that may affect future tax charges

On 22 December 2017, the Tax Cuts and Jobs Act (Tax Reform) was signed into law in the US. The Tax Reform includes significant changes to various federal tax provisions applicable to National Grid. The most significant changes include the reduction in the corporate federal income tax rate from 35% to 21% effective 1 January 2018 and the elimination of bonus depreciation deduction on utility property acquired after 27 September 2017 but allowance for 100% expensing of non-utility property. The reduction in the US corporate tax rate is the only item we would expect to materially impact our future effective tax rate. However, we expect the overall impact of Tax Reform to be economically neutral for the Group.

The Finance Act 2016 which was enacted on 15 September 2016 reduced the main rate of UK corporation tax to 17% with effect from 1 April 2020. Deferred tax balances have been calculated at this rate.

We will continue to monitor the developments driven by Brexit, the OECD's Base Erosion and Profit Shifting (BEPS) project and European Commission initiatives including fiscal state aid investigations. At this time we do not expect this to cause any material impact on our future tax charges.

6. Earnings per share

Adjusted earnings and earnings per share, excluding exceptional items and remeasurements, are provided to reflect the business performance subtotals used by the Company. For further details of exceptional items and remeasurements, see note 3. We have included reconciliations from this additional EPS measure to earnings for both basic and diluted EPS to provide additional detail for these items. The earnings per share calculations are based on profit after tax attributable to equity shareholders of the parent company which excludes non-controlling interests.

Following the sale of the UK Gas Distribution business on 31 March 2017, National Grid plc returned GBP3,171 million of proceeds to shareholders through a special dividend, paid on 2 June 2017. In order to maintain the comparability of the Company's share price before and after the special dividend, this was preceded by a share consolidation undertaken on 22 May 2017, replacing every 12 existing ordinary shares with 11 new ordinary shares. The weighted average number of ordinary shares outstanding for the period includes the effect of both the share consolidation and the special dividend from the date the special dividend was paid. The share buy-back programme which commenced on 2 June 2017 is now complete. Purchased shares are held as treasury shares.

(a) Basic earnings per share

 
                                                              Earnings               Earnings 
                                                  Earnings   per share   Earnings   per share 
                                                      2018        2018       2017        2017 
                                                      GBPm       pence       GBPm       pence 
 
Adjusted earnings from continuing operations         2,060        59.5      2,141        56.9 
Exceptional items after tax from continuing 
 operations                                          1,319        38.1      (312)       (8.3) 
Remeasurements after tax from continuing 
 operations                                            212         6.2       (19)       (0.5) 
 
Earnings from continuing operations                  3,591       103.8      1,810        48.1 
Adjusted earnings from discontinued operations           -           -        607        16.1 
Exceptional items and remeasurements after 
 tax from discontinued operations                     (41)       (1.2)      5,378       142.9 
 
Earnings from discontinued operations                 (41)       (1.2)      5,985       159.0 
Total adjusted earnings                              2,060        59.5      2,748        73.0 
Total exceptional items and remeasurements 
 after tax                                           1,490        43.1      5,047       134.1 
 
Total earnings                                       3,550       102.6      7,795       207.1 
 
                                                                  2018                   2017 
                                                              Millions               millions 
 
Weighted average number of shares - basic                        3,461                  3,763 
 
 

(b) Diluted earnings per share

 
                                                              Earnings               Earnings 
                                                  Earnings   per share   Earnings   per share 
                                                      2018        2018       2017        2017 
                                                      GBPm       pence       GBPm       pence 
 
Adjusted earnings from continuing operations         2,060        59.3      2,141        56.7 
Exceptional items after tax from continuing 
 operations                                          1,319        37.9      (312)       (8.3) 
Remeasurements after tax from continuing 
 operations                                            212         6.1       (19)       (0.5) 
 
Earnings from continuing operations                  3,591       103.3      1,810        47.9 
Adjusted earnings from discontinued operations           -           -        607        16.0 
Exceptional items and remeasurements after 
 tax from discontinued operations                     (41)       (1.2)      5,378       142.3 
 
Earnings from discontinued operations                 (41)       (1.2)      5,985       158.3 
Total adjusted earnings                              2,060        59.3      2,748        72.7 
Total exceptional items and remeasurements 
 after tax                                           1,490        42.8      5,047       133.5 
 
Total earnings                                       3,550       102.1      7,795       206.2 
 
                                                                  2018                   2017 
                                                              millions               Millions 
 
Weighted average number of shares - diluted                      3,476                  3,780 
 
 

7. Dividends

 
                                                2018                                   2017 
                                                                                          Cash 
                                          Cash dividend                               dividend      Scrip 
                                   Pence           paid  Scrip dividend       Pence       paid   dividend 
                               per share           GBPm            GBPm   per share       GBPm       GBPm 
 
Interim dividend in respect 
 of the current year               15.49            346             176       15.17        540         32 
Special dividend                  84.375          3,171               -           -          -          - 
Final dividend in respect 
 of the prior year                 29.10            970              33       28.34        923        151 
 
                                 128.965          4,487             209       43.51      1,463        183 
 

The Directors are proposing a final dividend for the year ended 31 March 2018 of 30.44p per share that will absorb approximately GBP1.0 billion of shareholders' equity (assuming all amounts are settled in cash). It will be paid on 16 August 2018 to shareholders who are on the register of members at 1 June 2018 (subject to Shareholders' approval at the AGM). A scrip dividend will be offered as an alternative.

Following completion of the sale of the majority interest in UK Gas Distribution, the Company paid a special dividend on 2 June 2017 of 84.375p per existing ordinary share ($5.4224 per existing American Depositary Share). This returned GBP3,171 million to shareholders. No scrip dividend was offered as an alternative.

8. Discontinued operations and disposal of UK Gas Distribution

On 31 March 2017 the Group completed the disposal of a 61% equity interest in the UK Gas Distribution business, principally comprising the Group's equity and debt interests in National Grid Gas Distribution Limited together with certain other assets (principally property and a 45% interest in Xoserve Limited). Further details are included in the Annual Report and Accounts 2016/17.

The Group sold its 100% equity interest in UK Gas Distribution to Quadgas HoldCo Limited, a newly incorporated UK limited company 61% owned by Quadgas Investments Bidco Limited and 39% by the Group's subsidiary National Grid Holdings One plc. In exchange, the Group received cash consideration of GBP3,679 million, loan proceeds of GBP1,775 million and recognised a shareholder loan receivable of GBP429 million and a 39% equity interest in Quadgas HoldCo Limited.

The UK Gas Distribution business met the criteria to be classified as held for sale at 8 December 2016, the date that the Group initially entered into the sale agreement, and depreciation and amortisation (circa GBP25 million per month) on tangible and intangible fixed assets ceased from this date. The disposal of UK Gas Distribution resulted in a GBP5.3 billion gain on disposal. The provisional purchase price allocation reported in the Annual Report and Accounts 2016/17 has been finalised and there were no significant completion adjustments on finalising this exercise in the current year.

The business represented a reportable segment and a separate major line of business and accordingly was presented as a discontinued operation in the consolidated income statement, consolidated statement of comprehensive income and the consolidated cash flow statement in 2016/17.

In 2017/18 a loss of GBP41 million is reported in discontinued operations, with GBP33 million relating to the completion accounts settlement in November 2017. In addition, this reflects a net charge of GBP8 million representing further transaction costs and gains principally relating to the reversal of provisions.

In addition, there was a cash outflow from operating activities of GBP207 million related to the utilisation of provisions, principally relating to payments of professional fees in respect of the disposal of the UK Gas Distribution business. Net cash flows used in financing activities were GBP231 million for the settlement of RPI swaps relating to the final stages of the Group-wide liability management programme executed as part of the sale process (2017: cashflows comprising GBP4.8 billion of debt issued and term debt raised, offset by GBP3.2 billion in respect of bond buybacks).

On 1 May 2018, the Group announced that it had entered into an agreement with Quadgas Investments BidCo Limited ('the Consortium') regarding the potential sale of its remaining 25% interest in Quadgas HoldCo Limited. Further details are given in notes 3 and 14.

9. Reconciliation of net cash flow to movement in net debt

 
                                                         2018      2017 
                                                         GBPm      GBPm 
 
(Decrease)/increase in cash and cash equivalents        (807)       984 
(Decrease)/increase in financial investments          (5,953)     5,675 
Net decrease/(increase) in borrowings and related 
 derivatives                                            1,209   (3,715) 
Net interest paid on the components of net debt           808     1,955 
 
Change in net debt resulting from cash flows          (4,743)     4,899 
Changes in fair value of financial assets and 
 liabilities and exchange movements                     2,098   (2,273) 
Net interest charge on the components of net 
 debt                                                 (1,017)   (2,401) 
Disposal of UK Gas Distribution                             -     5,890 
Other non-cash movements                                 (66)      (64) 
 
Movement in net debt (net of related derivative 
 financial instruments) in the year                   (3,728)     6,051 
Net debt (net of related derivative financial 
 instruments) at start of year                       (19,274)  (25,325) 
 
Net debt (net of related derivative financial 
 instruments) at end of year                         (23,002)  (19,274) 
 
 

10. Net debt

 
                                                        2018      2017 
                                                        GBPm      GBPm 
 
Cash, cash equivalents and financial investments       3,023     9,880 
Borrowings and bank overdrafts                      (26,625)  (28,638) 
Derivatives(1)                                           600     (516) 
 
Net debt (net of related derivative financial 
 instruments)                                       (23,002)  (19,274) 
 
 

1. The derivatives balance included in net debt excludes the commodity derivative liabilities of GBP47 million (2017:GBP64 million) and Further Acquisition Agreement (FAA) derivative asset of GBP110 million (2017: GBPnil).

11. Commitments and contingencies

 
                                                  2018   2017 
                                                  GBPm   GBPm 
 
Future capital expenditure contracted for but 
 not provided(1)                                 1,843  1,913 
Operating lease commitments                        443    619 
Energy purchase commitments(2)                   5,328  5,699 
Guarantees (a)                                   2,669  2,780 
 
 

(a) Guarantees

 
                                                             2018   2017 
                                                             GBPm   GBPm 
 
Guarantee of sublease for US property (expires 2040)          178    225 
Guarantees of certain obligations of Grain LNG Import 
 Terminal (expire up to 2028)                                  46    100 
Guarantees of certain obligations for construction of 
 HVDC West Coast Link (expires 2018)                          213    281 
Guarantees of certain obligations of Nemo Link Limited 
 (various expiry dates)                                        63    140 
Guarantees of certain obligations of National Grid North 
 Sea Link Limited (various expiry dates)(3)                 1,009  1,059 
Guarantees of certain obligations of construction of 
 IFA2 SAS (expected expiry 2021)(3)                           729    354 
Guarantees of certain obligations of St William Homes 
 LLP (various expiry dates)(4)                                 98    147 
Other guarantees and letters of credit (various expiry 
 dates)                                                       333    474 
 
                                                            2,669  2,780 
 
 

1. Following a review in the year, the basis on which we disclose capital commitments has been refined.

2.

Energy purchase commitments relate to contractual commitments to purchase electricity or gas that are used to satisfy physical delivery requirements to our customers or for energy that we use ourselves (i.e. normal purchase, sale or usage) and hence are accounted for as ordinary purchase contracts.

3. Included within total guarantees are guarantees to both joint ventures and EPC contractors regarding the construction of interconnectors of GBP739 million (2017: GBP555 million).

   4.         Includes guarantees to related parties. 

11. Commitments and contingencies continued

(b) Litigation and claims

Through the ordinary course of our operations, we are party to various litigations, claims and investigations. We do not expect the ultimate resolution of any of these proceedings to have a material adverse effect on our results of operations, cash flows or financial position.

12. Exchange rates

The consolidated results are affected by the exchange rates used to translate the results of our US operations and US dollar transactions. The US dollar to pound sterling exchange rates used were:

 
                                     2018  2017 
 
Closing rate applied at year end     1.40  1.25 
Average rate applied for the year    1.36  1.28 
 
 

13. Related party transactions

The following significant transactions with related parties were in the normal course of business. Amounts receivable from and payable to related parties are due on normal commercial terms:

 
                                                       2018  2017 
                                                       GBPm  GBPm 
 
Sales: Goods and services supplied to a pension 
 plan                                                     3     3 
Sales: Goods and services supplied to joint 
 ventures(1)                                             14    78 
Sales: Goods and services supplied to associates(2)     220     - 
Purchases: Goods and services received from 
 joint ventures(3)                                      135   168 
Purchases: Goods and services received from 
 associates(3)                                          160   169 
 
Receivable from joint ventures(4)                       160    64 
Receivable from associates(4)                           376   457 
Payable to joint ventures(5)                              -    84 
Payable to associates                                    17    27 
Interest income from joint ventures                       4     - 
Interest income from associates                          27     - 
 
Dividends received from joint ventures(6)                43    75 
Dividends received from associates(7)                   170    24 
 
 

1. In 2018 GBP5 million (2017: GBP68 million) of property sites were sold to joint venture St William Homes LLP.

2. Sales in the year relate to transactions with Quadgas HoldCo Limited. Within this is other income of GBP54 million relating to a Transitional Service Agreement following the sale of the UK Gas Distribution business to Quadgas HoldCo Limited.

3. During the year the Company received goods and services from a number of US associates, both for the transportation of gas and for pipeline services in the US. Additionally, goods and services were received from UK joint ventures for the construction of a transmission link in the UK.

4. Amounts receivable from associates includes a loan receivable balance from Quadgas HoldCo Limited of GBP352 million (2017: GBP434 million) and a loan receivable balance of GBP130 million (2017: GBP61 million) from Nemo Link Limited (a joint venture).

5. In previous years the amounts payable to joint ventures include deposits received for National Grid property sites from St William Homes LLP which have been settled during the year.

   6.         Dividends in respect of joint ventures were received from BritNed Development Limited. 

7. Within dividends received from associates in 2018, GBP144 million (2017: GBPnil) was from Quadgas HoldCo Limited.

14. Post balance sheet events

On 1 May 2018, the Group announced that it had entered into an agreement with Quadgas Investments BidCo Limited regarding the potential sale of its remaining 25% equity interest in Quadgas HoldCo Limited, the holding company for Cadent Gas Limited. Refer to note 3 for details on the accounting implications on the results for the year ended 31 March 2018 in relation to this agreement.

Alternative performance measures / non-IFRS reconciliations

Within the Annual Report, a number of financial measures are presented. These measures have been categorised as alternative performance measures (APMs), as per the European Securities and Markets Authority (ESMA) guidelines and the Securities and Exchange Commission (SEC) conditions for use of non-IFRS Financial Measures.

An APM is a financial measure of historical or future financial performance, financial position, or cash flows, other than a financial measure defined under IFRS. The Group uses a range of these measures to provide a better understanding of its underlying performance. APMs are reconciled to the most directly comparable IFRS financial measure where practicable.

The Group has defined the following financial measures as APMs derived from IFRS: net revenue, the various adjusted operating profit, earnings and earnings per share metrics detailed in the 'adjusted profit measures' section below, net debt, capital investment, funds from operations (FFO), FFO/interest cover and retained cash flow (RCF)/adjusted net debt. For each of these we present a reconciliation to the most directly comparable IFRS measure.

In addition to these APMs, we also have APMs derived from regulatory measures which have no basis under IFRS; we call these Regulatory Performance Measures. They comprise: Group return on equity (RoE), UK and US regulatory RoE, Regulated Asset Base, regulated asset base growth, invested capital, regulatory financial performance, regulatory gearing, annual asset growth, value growth and value added including value added per share. These measures reflect the inputs used by utility regulators to set the allowed revenues for many of our businesses. As such, we believe that they provide close correlation to the economic value we generate for our shareholders and are therefore important supplemental measures for our shareholders to understand the performance of the business.

We use regulatory performance measures to monitor progress against our regulatory agreements and certain aspects of our strategic objectives. Further, targets for certain of these performance measures are included in the Company's Annual Performance Plan (APP) and Long Term Performance Plan (LTPP) and contribute to how we reward our employees. We consider that such regulatory measures are important supplemental measures to our IFRS reporting to ensure a complete understanding of Group performance.

As the starting point for our Regulatory Performance Measures is not IFRS, and these measures are not governed by IFRS, we are unable to provide meaningful reconciliations to any directly comparable IFRS measures, as differences between IFRS and the regulatory recognition rules applied have built up over many years. Instead, for each of these we present an explanation of how the measure has been determined and why it is important, and an overview as to why it would not be meaningful to provide a reconciliation to IFRS.

Alternative Performance Measures

Net revenue

'Net revenue' is revenue less pass-through costs, such as payments to other UK network owners, system balancing costs, and gas and electricity commodity costs in the US. Pass-through costs are fully recoverable from our customers and are recovered through separate charges that are designed to recover those costs with no profit. Any over- or under-recovery of these costs is returned to, or recovered from, our customers.

 
                                                  2018                                    2017 
                     Gross revenue    Pass- through     Net revenue  Gross revenue  Pass- through costs  Net revenue 
Year ended 31 March                       costs 
                         GBPm              GBPm            GBPm          GBPm              GBPm             GBPm 
UK Electricity 
 Transmission            4,154           (2,243)           1,911         4,439            (2,293)           2,146 
UK Gas Transmission      1,091            (257)             834          1,080             (223)             857 
US Regulated             9,272           (3,804)           5,468         8,931            (3,411)           5,520 
NG Ventures and 
 Other                    776               -               776           713                -               713 
Sales between 
 segments                (43)               -              (43)          (128)               -              (128) 
Total                   15,250           (6,304)           8,946        15,035            (5,927)           9,108 
 

Adjusted profit measures:

In considering the financial performance of our business and segments, we use various adjusted profit measures in order to aid comparability of results year on year. The various measures are presented on page 14 and reconciled below.

Adjusted results, also referred to as Headline results: These exclude the impact of exceptional items and remeasurements that are treated as discrete transactions under IFRS and can accordingly be classified as such. This is a measure used by management that forms part of the incentive target set annually for remunerating certain Executive Directors and further details of these items are included in note 3.

Underlying results: Further adapts our adjusted results to take account of volumetric and other revenue timing differences arising due to the in year difference between allowed and collected revenues, including revenue incentives, as governed by our rate plans in the US or regulatory price controls in the UK (but excluding totex-related allowances and adjustments). For 2017/18, as highlighted on page 15, our underlying results exclude GBP104 million of timing differences, as well as GBP142 million of storm costs (which are significant in aggregate this year) where we expect to recover the bulk of the costs incurred through regulatory mechanisms in the US.

Prior period pro forma including Cadent overlay: To aid comparability with prior years, we show an estimate of adjusted and underlying results and earnings for the continuing business in 2017 and 2016, including an estimated contribution from our 39% interest in UK Gas Distribution (now Cadent).

Constant currency - The adjusted profit measures are also shown on a constant currency basis to show the year on year comparisons excluding any impact of foreign currency movements. This basis is explained in more detail on page 39.

Alternative performance measures / non-IFRS reconciliations continued

Reconciliation of Statutory, Adjusted, Underlying and Underlying (pro forma) Profits and Earnings - At actual exchange rates - Continuing operations

 
                 Statutory   Exceptionals   Adjusted  Timing  Major Storms  Underlying      Cadent        Underlying 
Year ended 31                    and                                                    overlay (1, 2)   (pro forma) 
March 2018                  remeasurements 
                   GBPm          GBPm         GBPm     GBPm       GBPm         GBPm          GBPm            GBPm 
UK Electricity 
 Transmission      1,041          -          1,041      14         -          1,055           -             1,055 
UK Gas 
 Transmission       487           -           487       18         -           505            -              505 
US Regulated       1,734         (36)        1,698    (136)       142         1,704           -             1,704 
NG Ventures and 
 Other              231           -           231       -          -           231            -              231 
Total operating 
 profit            3,493         (36)        3,457    (104)       142         3,495           -             3,495 
Net finance 
 costs             (745)        (229)        (974)      -          -          (974)           -             (974) 
Share of post 
 -tax results 
 of JVs and 
 associates        (40)          207          167       -          -           167            -              167 
Profit before 
 tax               2,708         (58)        2,650    (104)       142         2,688           -             2,688 
Tax                 884        (1,473)       (589)      42        (51)        (598)           -             (598) 
Profit after 
 tax               3,592       (1,531)       2,061     (62)        91         2,090           -             2,090 
 
 
                 Statutory   Exceptionals   Adjusted  Timing  Major Storms  Underlying  Cadent overlay    Underlying 
Year ended 31                    and                                                        (1, 2)       (pro forma) 
March 2017                  remeasurements 
                   GBPm          GBPm         GBPm     GBPm       GBPm         GBPm          GBPm            GBPm 
                                            -------- 
UK Electricity 
 Transmission      1,361          11         1,372    (137)        -          1,235           -             1,235 
UK Gas 
 Transmission       507           4           511      (62)        -           449            -              449 
US Regulated       1,278         435         1,713    (199)        -          1,514           -             1,514 
NG Ventures and 
 Other              62           115          177       -          -           177            -              177 
Total operating 
 profit            3,208         565         3,773    (398)        -          3,375           -             3,375 
Net finance 
 costs            (1,087)         58        (1,029)     -          -         (1,029)          29           (1,000) 
Share of post 
 -tax results 
 of JVs and 
 associates         63            -            63       -          -            63           144             207 
                                            -------- 
Profit before 
 tax               2,184         623         2,807    (398)        -          2,409          173            2,582 
Tax                (374)        (292)        (666)     119         -          (547)          (6)            (553) 
                                            -------- 
Profit after 
 tax               1,810         331         2,141    (279)        -          1,862          167            2,029 
                                            -------- 
 

Reconciliation of Adjusted, Underlying and Underlying (pro forma) Profits - At constant currency

 
                                                                        At constant currency 
                  Adjusted       Constant     Adjusted  Timing  Major Storms  Underlying     Cadent       Underlying 
Year ended 31     at actual      currency                                                  overlay (1,    (pro forma) 
March 2017      exchange rate   adjustment                                                     2) 
                    GBPm           GBPm         GBPm     GBPm       GBPm         GBPm         GBPm           GBPm 
UK Electricity 
 Transmission       1,372            -         1,372    (137)        -          1,235           -            1,235 
UK Gas 
 Transmission        511             -          511      (62)        -           449            -             449 
US Regulated        1,713          (102)       1,611    (187)        -          1,424           -            1,424 
NG Ventures 
 and Other           177             4          181       -          -           181            -             181 
Total 
 operating 
 profit             3,773          (98)        3,675    (386)        -          3,289           -            3,289 
Net finance 
 costs             (1,029)          45         (984)      -          -          (984)          29            (955) 
Share of post 
 -tax results 
 of JVs and 
 associates          63             (1)          62       -          -            62           144            206 
Profit before 
 tax                2,807          (54)        2,753    (386)        -          2,367          173           2,540 
 

Note 1: 2017 estimate including 39% interest in UK Gas Distribution for the year ended 31 March 2017

The 2017 estimate includes Cadent overlay approximating a 39% stake in UK Gas Distribution (see note 8 for further detail), we have imputed additional net income as follows:

- Reduction to net finance cost of GBP29 million in each year reflecting additional interest receivable on the shareholder loan;

- Increase in share of post-tax results of joint ventures and associates based on actual operating profit reported by UK Gas Distribution in 2017, less the effect of provisional purchase price adjustments, finance costs reflecting the cost charged to discontinued operations in the comparative period, estimated additional financing costs at holding company level and the tax effects thereon.

Alternative performance measures / non-IFRS reconciliations continued

Note 2: Weighted average number of shares

 
                                                                2018       2017 
                                                            Millions   Millions 
Weighted average number of shares used for basic EPS           3,461      3,763 
Reduction to reflect implied return of capital                     -      (300) 
Weighted average number of shares used for pro forma           3,461      3,463 
 

The reduction in the weighted average number of shares is an approximation of the impact of the share consolidation and share buyback had these events taken place during the comparative period.

Earnings per share calculations from continuing operations - at actual exchange rates

The table below reconciles the profit before tax from continuing operations per the previous tables back to the earnings per share from continuing operations for each of the adjusted profit measures. Earnings per share is only presented for those adjusted profit measures that are at actual exchange rates, and not for those at constant currency.

 
Year ended 31 March  Profit after tax    Non-controlling     Profit after tax    Weighted average   Earnings per share 
2018                       GBPm             interest         attributable to     number of shares          pence 
                                              GBPm              the parent            Number 
                                                                   GBPm 
Statutory                 3,592                (1)                3,591               3,461               103.8 
Adjusted (also 
 referred to as 
 Headline)                2,061                (1)                2,060               3,461                59.5 
Underlying                2,090                (1)                2,089               3,461                60.4 
 
 
Year ended 31 March  Profit after tax    Non-controlling     Profit after tax    Weighted average   Earnings per share 
2017                       GBPm             interest         attributable to     number of shares          pence 
                                              GBPm              the parent            Number 
                                                                   GBPm 
Statutory                 1,810                 -                 1,810               3,763                48.1 
Adjusted (also 
 referred to as 
 Headline)                2,141                 -                 2,141               3,763                56.9 
Underlying                1,862                 -                 1,862               3,763                49.5 
Underlying (pro 
 forma)                   2,029                 -                 2,029               3,463                58.6 
 

Timing impacts

Under the Group's regulatory frameworks, the majority of the revenues that National Grid is allowed to collect each year are governed by a regulatory price control or rate plan. If a company collects more than this allowed level of revenue, the balance must be returned to customers in subsequent years, and if it collects less than this level of revenue, it may recover the balance from customers in subsequent years. These variances between allowed and collected revenues give rise to "over and under recoveries". Opening balances of over and under recoveries have been restated where appropriate to correspond with regulatory filings and calculations.

 
                                               UK Electricity Transmission  UK Gas Transmission  US Regulated  Total 
                                                           GBPm                     GBPm             GBPm       GBPm 
31 March 2017 closing balance(1)                          (30)                      112              312        394 
Opening balance adjustments                                 -                       (1)             (218)      (219) 
Restated 1 April 2017 opening balance                     (30)                      111               94        175 
Over/(under) recovery                                     (14)                     (18)              136        104 
31 March 2018 closing balance to 
 (recover)/return                                         (44)                      93               230        279 
Year on year timing variance                              (151)                    (80)              (51)      (282) 
 
                                               UK Electricity Transmission  UK Gas Transmission  US Regulated  Total 
                                                           GBPm                     GBPm             GBPm       GBPm 
31 March 2016 closing balance(1)                          (171)                     38               147        14 
Opening balance adjustments                                 4                       12               (22)       (6) 
Restated 1 April 2016 opening balance                     (167)                     50               125         8 
Over/(under)recovery(2)                                    137                      62               187        386 
31 March 2017 closing balance to 
 (recover)/return                                         (30)                      112              312        394 
Year on year timing variance                               132                      (5)              283        410 
 

1. Opening US Regulated balances restated using the average rate for the year to 31 March 2018.

   2.         Over/under recovery restated using the average rate for the year to 31 March 2018. 

Alternative performance measures / non-IFRS reconciliations continued

Capital investment

'Capital investment' or 'investment' refer to additions to plant, property and equipment and intangible assets, and contributions to joint ventures and associates, other than the St William Homes LLP joint venture during the period. St William Homes LLP is excluded based on the nature of this joint venture arrangement.

 
                                                                At actual exchange rates      At constant currency 
Year ended 31 March                                              2018     2017    % change    2018    2017  % change 
                                                                 GBPm     GBPm                GBPm    GBPm 
                                                                                            ------  ------  -------- 
UK Electricity Transmission                                       999    1,027         (3)     999   1,027       (3) 
UK Gas Transmission                                               310      214          45     310     214        45 
US Regulated                                                    2,424    2,247           8   2,424   2,113        15 
NG Ventures and Other                                             341      247          38     341     239        43 
                                                                                            ------  ------  -------- 
Group capex                                                     4,074    3,735           9   4,074   3,593        13 
Equity investment, funding contributions and loans to joint 
 ventures and associates(1)                                       177      127          39     177     124        43 
                                                                                            ------  ------  -------- 
Group capital investment                                        4,251    3,862          10   4,251   3,717        14 
                                                                                            ------  ------  -------- 
 
   1.     Excludes GBP19m (2017: GBP10m) equity contribution to the St William property joint venture. 

Net Debt

See notes 9 and 10 on page 63 for reconciliation of net debt.

Funds from Operations and Interest Cover

Funds from operations (FFO) is the cash flows generated by the operations of the Group. Credit rating metrics, including FFO, are used as indicators of balance sheet strength.

 
Year ended 31 March                                                            2018  2017(1) 
                                                                               GBPm     GBPm 
Interest expense (P&L)                                                        1,128    1,082 
Hybrid interest reclassified as dividend                                       (51)     (51) 
Capitalised interest                                                            128      109 
Pensions interest adjustment                                                   (49)     (60) 
Interest on lease rentals adjustment                                             16       18 
Unwinding of discount on provisions                                            (75)     (73) 
Other interest adjustments                                                       12        1 
Interest paid (discontinued operations)                                           -      146 
Adjusted interest expense                                                     1,109    1,172 
Net cash inflow from operating activities                                     4,710    4,320 
Interest received on financial instruments                                       57       51 
Interest paid on financial instruments                                        (853)    (839) 
Dividends received                                                              213       99 
Working capital adjustment                                                    (118)    (151) 
Excess employer pension contributions                                           211      606 
Hybrid interest reclassified as dividend                                         51       51 
Lease rentals                                                                    86       86 
Difference in net interest expense in income statement to cash flow           (178)    (170) 
Difference in current tax in income statement to cash flow                    (206)     (47) 
Current tax related to prior periods                                           (22)     (46) 
Cash flow from discontinued operations                                        (207)      909 
Interest paid (discontinued operations)                                           -    (146) 
Funds from operations (FFO)                                                   3,744    4,723 
Interest cover (FFO + adjusted interest expense/adjusted interest expense)     4.4x     5.0x 
 

1. Numbers for 2017 reflect the calculations for the total Group as based on the published accounts for the respective years and have not been restated.

Alternative performance measures / non-IFRS reconciliations continued

Retained cash flow (RCF)/adjusted net debt

 
Years ended 31 March                                          2018     2017 
                                                              GBPm     GBPm 
Funds from operations (FFO)                                  3,744    4,723 
Hybrid interest reclassified as dividend                      (51)     (51) 
Ordinary dividends paid to shareholders                    (1,316)  (1,463) 
RCF (excl. share buybacks)                                   2,377    3,209 
Repurchase of scrip treasury shares                          (178)    (189) 
RCF (net of share buybacks)                                  2,199    3,020 
Bank overdrafts                                                  -        - 
Borrowings                                                  26,625   28,638 
Less: 
   50% hybrid debt                                         (1,050)  (1,033) 
   Cash and cash equivalents                                 (329)  (1,139) 
   Restricted cash                                               -        2 
   Available-for-sale investments                          (2,304)  (7,432) 
Underfunded pension obligations                                857    1,487 
Operating leases adjustment(1)                                 408      526 
Derivative asset removed from debt                           (479)       52 
Currency swaps                                                 117       72 
Nuclear decommissioning liabilities reclassified as debt         5       36 
Collateral - cash received under collateral agreements       (878)    (709) 
Accrued interest removed from short term debt                (195)    (210) 
Adjusted net debt (includes pension deficit)                22,777   20,290 
FFO/adjusted net debt                                        16.4%    23.3% 
RCF (excl. share buybacks)/adjusted net debt                 10.4%    15.8% 
RCF (net of share buybacks)/adjusted net debt                 9.7%    14.9% 
 

(1) An adjustment to reclassify operating lease commitments as debt. For March 2018 this was calculated as four times the operating lease rental charge for 2018.

RCF/adjusted net debt for 2018 includes GBP207m of cash flows relating to the sale of UK Gas Distribution in 2016/17. Excluding these cash flows, RCF/adjusted net debt for 2017/18 was 10.6%.

Regulatory Performance Measures

Regulated financial performance

Regulatory financial performance is a pre interest and tax measure, starting at segmental operating profit and making adjustments (such as the elimination of all pass-through items included in revenue allowances and eliminates timing) to approximate regulatory profit for the UK regulated activities. This measure provides a bridge for investors between a well understood and comparable IFRS starting point through the key adjustments required to approximate regulatory profit. This measure also provides the foundation to calculate profit driven regulatory returns i.e. Return on Capital Employed (RoCE) and Group Return on Equity (RoE).

For the reasons noted above, the table below shows the principal differences between the IFRS operating profit and the regulated financial performance, but is not a formal reconciliation to an equivalent IFRS measure.

UK Electricity Transmission

 
Years ended 31 March                               2018   2017 
                                                   GBPm   GBPm 
Reported operating profit                         1,041  1,372 
Movement in regulatory 'IOUs'                        51  (288) 
Deferred taxation adjustment                         70     62 
RAV indexation (average 3% long-run inflation)      374    356 
Regulatory vs IFRS depreciation difference        (377)  (379) 
Fast/slow money adjustment                           69     34 
Pensions                                           (49)   (47) 
Performance RAV created                              83     74 
Regulated financial performance                   1,262  1,184 
 

UK Gas Transmission

 
Years ended 31 March                              2018   2017 
                                                  GBPm   GBPm 
Reported operating profit                          487    511 
Movement in regulatory 'IOUs'                     (91)  (120) 
Deferred taxation adjustment                        18     39 
RAV indexation (average 3% long-run inflation)     173    168 
Regulatory vs IFRS depreciation difference        (29)   (21) 
Fast/slow money adjustment                        (11)   (14) 
Pensions                                          (32)   (53) 
Performance RAV created                           (16)   (11) 
Regulated financial performance                    499    499 
 

Regulated asset base

The regulated asset base is a regulatory construct, based on pre-determined principles not based on IFRS. It effectively represents the invested capital on which we are authorised to earn a cash return. By investing efficiently in our networks, we add to our regulated asset base over the long term and this in turn contributes to delivering shareholder value. Our regulated asset base is comprised of our regulatory asset value in the UK, plus our rate base in the US.

Maintaining efficient investment in our regulated asset base ensures we are well positioned to provide consistently high levels of service to our customers and increases our revenue allowances in future years. While we have no specific target, our overall aim is to achieve between 5% and 7% growth in regulated asset base each year through continued investment in our networks in both the UK and US.

In the UK, the way in which our transactions impact RAV is driven by principles set out by Ofgem. In a number of key areas these principles differ from the requirements of IFRS, including areas such as additions and the basis for depreciation. Further, our UK RAV is adjusted annually for inflation. RAV in each of our retained UK businesses has evolved over the period since privatisation in 1990 and as a result, historical differences between the initial determination of RAV and balances reported under UK GAAP at that time still persist. Due to the above, substantial differences exist in the measurement bases between RAV and an IFRS balance metric and, therefore, it is not possible to provide a meaningful reconciliation between the two.

In the US, rate base is a regulatory measure determined for each of our main US operating companies. It represents the value of property and other assets or liabilities on which we are permitted to earn a rate of return, as set out by the regulatory authorities for each jurisdiction. The calculations are based on the applicable regulatory agreements for each jurisdiction and include the allowable elements of assets and liabilities from our US companies. For this reason, it is not practical to provide a meaningful reconciliation from the US rate base to an equivalent IFRS measure.

Regulatory Performance Measures continued

 
Years ended 31 March                                                                             Total 
 (GBPm at constant currency)               RAV, rate base or other business assets     Regulated and other assets 
                                                 2018                2017(1)             2018          2017(1) 
UK Electricity Transmission                     13,045               12,479             12,651          12,034 
UK Gas Transmission                             6,014                 5,755              5,889          5,721 
US Regulated                                    14,762               13,751             16,683          15,238 
Total Regulated                                 33,821               31,985             35,223          32,993 
Other assets/invested capital                   2,167                 1,984              1,824          1,724 
Total Group Regulated and other assets          35,988               33,969             37,047          34,717 
 

1. Represented for opening balance adjustments following the completion of the regulatory reporting pack process in 2017.

US rate base and total regulated assets for 31 March 2017 have been restated in the table above at constant currency. At actual currency the values were GBP15,398 million and GBP17,063 million respectively.

Other business assets and other assets/invested capital for 31 March 2017 have been restated in the table above at constant currency. At actual currency the values were GBP2,055 million and GBP1,814 million respectively.

Group return on equity (RoE)

Group RoE provides investors with a view of the performance of the Group as a whole compared with the amounts invested by the Group in assets attributable to equity shareholders. It is the ratio of our regulatory financial performance to our measure of equity investment in assets. It therefore reflects the regulated activities as well as the contribution from our non-regulated businesses together with joint ventures and minority interests.

We use Group RoE to measure our performance in generating value for our shareholders and a target for Group RoE is included in the incentive mechanisms for executive remuneration within both the APP and LTPP schemes.

Group RoE is underpinned by our regulated asset base. For the reasons noted above, no reconciliation to IFRS has been presented as we do not believe it would be practical. However we do include the calculations below.

Calculation: Regulatory financial performance including a long-run assumption of 3.0% RPI inflation, less adjusted interest and adjusted taxation divided by equity investment in assets:

-- Adjusted interest removes interest on pensions, capitalised interest and release of provisions;

-- Adjusted taxation adjusts the Group taxation charge for differences between IFRS profit before tax and regulated financial performance less adjusted interest;

-- Equity investment in assets is calculated as the total opening UK regulatory asset value, the total opening US rate base plus goodwill plus opening net book value of Other activities and our share of joint ventures and associates, minus opening net debt as reported under IFRS restated to the weighted average GBP/$ exchange rate for the year.

 
Years ended 31 March                                             2018      2017 
                                                                 GBPm      GBPm 
Regulated financial performance                                 3,392     3,906 
Operating profit of other activities                              255       204 
Group financial performance                                     3,647     4,110 
Share of post-tax results of joint ventures and associates        238        63 
Non-controlling interests                                         (1)         1 
Adjusted Group interest charge                                  (980)   (1,075) 
Group tax charge                                                (639)     (808) 
Tax on adjustments                                                 27       166 
Group financial performance after interest and tax              2,292     2,457 
Opening rate base/RAV                                          32,446    40,435 
Share of Cadent RAV                                               512         - 
Opening NBV of non-regulated businesses                         1,328     1,579 
Joint ventures and associates                                     459       408 
Opening goodwill                                                5,626     5,984 
Opening capital employed                                       40,371    48,406 
Opening net debt                                             (21,770)  (27,346) 
Opening equity                                                 18,601    21,060 
Return on equity                                                12.3%     11.7% 
 

Regulatory Performance Measures continued

UK regulated return on equity (RoE)

UK regulated RoEs are a measure of how the businesses are performing against the assumptions used by our regulator. These returns are calculated using the assumption that the businesses are financed in line with the regulatory adjudicated capital structure, at the cost of debt assumed by the regulator and that RPI inflation is equal to a long-run assumption of 3.0%. They are calculated by dividing elements of out- or under-performance versus the regulatory contract by the average equity RAV in line with the regulatory assumed capital structure and adding to the base allowed RoE.

This is an important measure of UK regulated business performance and our operational strategy continues to focus on this metric. This measure can be used to determine how we are performing under the RIIO framework and also helps investors to compare our performance with similarly regulated UK entities. Reflecting the importance of this metric, it is also a key component of both the APP and LTPP schemes.

The UK RoE is underpinned by the UK RAV. For the reasons noted above, no reconciliation to IFRS has been presented as we do not believe it would be practical. However we do include the calculations below.

US regulated return on equity

US regulated RoE is a measure of how a business is performing against the assumptions used by the regulator. This US operational return measure is calculated using the assumption that the businesses are financed in line with the regulatory adjudicated capital structure. The returns are divided by the average rate base (or where a reported rate base is not available, an estimate based on rate base calculations used in previous rate filings) multiplied by the adjudicated equity portion in the regulatory adjudicated capital structure.

This is an important measure of our US regulated business performance and our operational strategy continues to focus on this metric. This measure can be used to determine how we are performing and also helps investors compare our performance with similarly regulated US entities. Reflecting the importance of this metric, it is also a key component of both the APP and LTPP schemes.

The US return is based on a calculation which gives proportionately more weighting to those jurisdictions which have a greater rate base. For the reasons noted above, no reconciliation to IFRS has been presented as we do not believe it would be practical.

 
Years ended 31 March                                              Achieved Return 
 %                                                                   on Equity       Base or Allowed Return on Equity 
                              Regulatory Debt:Equity assumption    2018     2017          2018              2017 
UK Electricity Transmission                 60/40                  13.1     13.6          10.2              10.2 
UK Gas Transmission                       62.5/37.5                10.0     10.8          10.0              10.0 
US Regulated                             Avg. 50/50                8.9       8.2          9.4               9.5 
 

Value Added and Value Added per Share

Value Added is a measure that reflects the value to shareholders of our dividend and the growth in National Grid's regulated and non-regulated assets (as measured in our rate base, for regulated entities), net of the growth in overall debt. It is a key metric used to measure our performance and underpins our approach to sustainable decision-making and long-term management incentive arrangements.

Value Added is derived using our regulated asset base and, as such, it is not practical to provide a meaningful reconciliation from this measure to an equivalent IFRS measure due to the reasons set out for our regulated asset base. However, the calculation is set out in the Growth and Value Added section on page 8.

Value added per share is calculated by dividing value added by the weighted average number of shares set out in note 6 on page 61.

Regulatory Gearing

Regulatory gearing is a measure of how much of our investment in RAV and rate base and other elements of our invested capital (including our investments in NG Ventures, UK property and other assets and US other assets) is funded through debt.

 
Year ended 31 March                                            2018   2017*  % change 
                                                               GBPm    GBPm 
UK RAV                                                       19,059  18,219         5 
US Rate base                                                 14,762  15,398       (4) 
Other invested capital included in gearing calculation        2,167   2,055         5 
Total assets included in gearing calculation                 35,988  35,672         1 
Net debt (including 100% of hybrid debt)                     23,002  23,284       (1) 
 
Group gearing (based on 100% of net debt)                       64%     65%         2 
Group gearing (excluding 50% of hybrid debt from net debt)      61%     62%         2 
 

* Net debt for 2017 adjusted to include impact of future GBP4.01bn return of capital relating to the sale of a stake in UK Gas Distribution.

[1] 'Headline' - (also referred to as 'Adjusted') - represents statutory results excluding exceptional items and remeasurements. 'Underlying' represents Headline results additionally excluding timing and major storms. These and a number of other terms and performance measures used in this document are not defined within accounting standards and may be applied differently by other organisations. We have provided definitions of these terms on page 14 and reconciliations of these measures on pages 42 to 44.

[2] Underlying (including Cadent pro forma) - This measure is used to aid comparability year on year by showing what our Underlying results would have looked like had the disposal of the 61% interest in our UK Gas Distribution business occurred at the start of the earliest comparative period rather than at 31 March 2017. The basis used for the Cadent pro forma is explained in more detail on page 14.

[3] Employee lost time injury frequency rate per 100,000 hours worked.

[4] Our results are also shown on a constant currency basis to show the year-on-year comparisons excluding any impact of foreign currency movements. This basis is explained in more detail on page 39.

[5] In November 2017, Ofgem ran the financial models that calculate substantial elements of the revenue allowances for National Grid's UK regulated businesses. The outcome of these model runs (known as the 'MOD adjustments') were in line with National Grid's expectations.

[6] See explanation to 2018 statutory tax under 'Profit before tax and taxation' on page 15.

[7] Effective tax rates are calculated before the share of post-tax profits from joint ventures and associates.

On a statutory basis, Group profit before tax was GBP2,708m with a tax credit of GBP884m. This reflects a GBP1,510m tax credit relating to the reduction in the US federal corporation tax rate (deferred tax impact).

This information is provided by RNS

The company news service from the London Stock Exchange

END

FR ARMMTMBTBMAP

(END) Dow Jones Newswires

May 17, 2018 02:01 ET (06:01 GMT)

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