Stock exchange release

Fortum extends period of validity regarding offer to City of Espoo

30 September 2005, 9:00 EEST

Fortum Corporation STOCK EXCHANGE RELEASE 30 September 2005 at 9.00 am

Fortum extends period of validity regarding offer to City of Espoo Fortum has decided to extend the period of validity regarding its offer to buy the shares of E.ON Finland Oyj owned by the City of Espoo to December 31th, 2005. Fortum Corporation Carola Teir-Lehtinen Senior Vice President, Corporate Communications Further information: Carola Teir-Lehtinen, Senior Vice President, Communications, tel. +358 50 452 4118 Distribution: Helsinki Stock Exchange Key media