HSE: FORTUM OYJ: INVALIDATION OF SHARES

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