Fortum Corporation ANNOUNCEMENT 23.10.2007 SHARE REPURCHASE 23.10.2007 In the Helsinki Stock Exchange Trade date 23.10.2007 Bourse trade BUY Share FUM1V Amount 400.000 shares Total cost 11.438.844,26 EUR Average price/ share 28,5971 EUR Highest price/ share 28,96 EUR Lowest price/ share 28,40 EUR Fortum Corporation now holds a total of 1.200.000 shares including the shares repurchased on 23.10.2007. On behalf of Fortum Corporation NORDEA BANK FINLAND PLC Petri Simberg Jarkko Järvinen