(Wraps stories together, adds detail)
By Peter Dinkloh and Jan Korselt
FRANKFURT/PRAGUE, Aug 14 (Reuters) - German utility RWE <RWEG.DE> and Czech power group CEZ <
> raised their earnings forecasts on Thursday, emboldened by record power prices and cost cutting.RWE, Europe's fifth-biggest utility, said it planned to raise its earnings outlook through to 2012 in February next year.
CEZ, central Europe's largest company by market capitalisation, said it now expected net income before minorities to rise to 48.6 billion crowns ($2.98 billion) this year, compared with a previous forecast of 46.6 billion euros.
"The utilities' earnings story is still intact -- rising power prices are feeding through to their earnings," said Ian Mitchell, head of the European utility research team at JP Morgan in London.
"But earnings growth is slowing, so utilities are also cutting costs to further boost profits."
Power prices in the 55 billion euro ($82 billion) German power market have risen by a third since the beginning of the year, when companies made their earnings predictions, boosted by soaring commodity prices.
The German power sector sets the trend for prices across the continent both because of its size and because it provides power to surrounding countries.
Utilities are selling most of their power in contracts for delivery in coming years, locking in the high prices, prompting investors to expect them to earn more than currently forecast.
"The prices for our main product, power, have risen significantly ... one conclusion is to assume earnings will rise" more strongly, RWE Chief Financial Officer Rolf Pohlig said on Thursday.
RWE's expectation -- unveiled at an investor conference on Thursday -- that it will "upgrade" its profit outlook in February next year might bring its prediction in line with market expectations.
The company now expects operating earnings to rise 5 percent each year on average through 2012, while analysts on average estimate an increase of 10 percent between 2009 and 2011.
Other utilities were also upbeat on earnings. Russian hydroelectric giant RusHydro <HYDR.MM> expects net profit to almost double to $1 billion in 2009.
Norway's Statkraft said it expected higher output and sales this year after first-half power production rose 30 percent.
But shares have not reflected the companies' earnings potential.
The DJ Stoxx utilities index <.SX6P> declined 20 percent this year, even though large utilities throughout Europe, including France's EDF <EDF.PA> and Italy's Enel <ENEI.MI>, have been posting operating earnings that beat expectations.
To help boost share prices, companies including RWE and CEZ are seeking additional measures to raise profits.
RWE Chief Executive Juergen Grossmann almost doubled the company's target for annual cost cuts to 1.2 billion euros for 2012 from 600 million euros for 2010.
CEZ' Chief Financial Officer Martin Novak has said the company plans a second share-buyback program, which will start at the beginning of next year.