Stock exchange release

HSE: FORTUM OYJ: INVALIDATION OF SHARES

20 December 2006, 9:35 EET

EXCHANGE NOTICE 545/2006, 20 DECEMBER 2006 SHARES

FORTUM OYJ: INVALIDATION OF SHARES Fortum Oyj has invalidated 1 660 000 of its own shares. Decrease in the share capital has been entered into the Trade Register 19 December 2006. Identifiers of Fortum Oyj's share: Trading code: FUM1V ISIN code: FI0009007132 Orderbook id: 24271 Number of shares: 887.393.646 HELSINKI STOCK EXCHANGE Janne Seppänen Head of Surveillance