Stock exchange release

Additional capacity for Fortum from the power increase of the Oskarshamn nuclear power plant

20 January 2006, 14:01 EET

Fortum Corporation STOCK EXCHANGE RELEASE 20 January 2006 1(1)

Additional capacity for Fortum from the power increase of the Oskarshamn nuclear power plant Fortum's affiliate OKG is going to increase the power of the 3rd unit of the Oskarshamn nuclear power plant from the current 1200 megawatts to 1450 megawatts. OKG will implement and fund the power increase and renovation investments through its own balance sheet. The investment will be mainly realised in 2008. Fortum's share of ownership in the Oskarshamn nuclear power plant entitles the company to a share of over 43 percent of the production of the power plant, which Fortum buys at cost price. Fortum's share of the power increase of the power plant's 3rd unit is slightly over 100 megawatts. "The investment is important to Fortum, because it increases our carbon dioxide- free production capacity that we can offer to the Nordic electricity market," says Senior Vice President Tapio Kuula of Fortum. More than 80 percent of Fortum's electricity production capacity is carbon dioxide-free. Fortum Corporation Carola Teir-Lehtinen Senior Vice President, Corporate Communications For further information, please contact Tapio Kuula, Senior Vice President, tel. +358 10 45 24112 Distribution: Helsinki Stock Exchange Key media