The result weakened to 477 millioneuros, compared with 524 million euros in the first quarter of 2013.
Sales fell 11 percent to 1,473 millioneuros (1,654), while operating income increased to 2,333 million euro (477).
Fortum Oyj said that its comparable operating income fell by just 9 percent despite low power prices and a weak Russian rouble.
The result weakened to 477 millioneuros, compared with 524 million euros in the first quarter of 2013.
Sales fell 11 percent to 1,473 millioneuros (1,654), while operating income increased to 2,333 million euro (477).