By Inti Landauro And Sam Schechner 

PARIS--Power utility Electricité de France SA said 2014 net profit rose 5.2% as it increased production at its more profitable nuclear reactors, but came in below expectations due to impairment charges at businesses in the Benelux region and Switzerland.

Full-year profit for 2014 stood at 3.52 billion euros ($3.98 billion), compared with EUR3.52 billion in 2013. Full-year profit came in below a median expectation for EUR4.29 billion, according to 15 analysts polled by the company, and had impairment charges for its business in Belgium, in addition to its minority stake in Swiss firm Alpiq.

Earnings before interest, tax, depreciation and amortization rose 7.3% to EUR17.28 billion, beating a median expectation for EUR17.10 billion.

EDF "achieved solid operating and financial results," Jean-Bernard Levy, the recently appointed chief executive of the state-controlled utility, said in a statement. Mr. Levy replaced Henri Proglio in fall.

The company's efforts to make its nuclear reactors operate at a higher capacity, in part by being more efficient about maintenance, allowed EDF to boost profitability even though consumption and prices were hurt by mild weather.

The world's largest nuclear power operator with 73 reactors said its nuclear output in France rose to 415.9 terawatt hours, up from 403.7 TWh a year earlier. The company expects 2015 output of 410 TWh to 415 TWh.

When nuclear reactors are idle, EDF has to rely on traditional thermal power plants that are more expensive to run to ensure the electricity supply.

EDF said it expects 0% to 3% organic growth in its Ebitda, assuming a constant scope and exchange rates, excluding the impact of the continuation of 2012-2013 regulated tariffs.

The company's board proposed a cash dividend of EUR1.25, compared with EUR1.25 last year.

On a conference call with journalists, Mr. Levy said the firm is in full negotiations with the British government over the new Hinkley Point nuclear power plant project in the U.K., but declined to say when an accord could be reached.

Write to Inti Landauro at inti.landauro@wsj.com and Sam Schechner at sam.schechner@wsj.com

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