Supplement to the redemption offer document regarding Fortum Corporation's redemption offer for the shares of Fortum Espoo Oyj

Stock Exchange Release

Fortum Corporation (Fortum) has on 30 June 2006 published the redemption offer for the shares of Fortum Espoo Oyj (Fortum Espoo). The redemption offer commenced on 4 July 2006 according to its terms and conditions. Fortum Espoo has today published the attached interim report for the period 1 January – 30 June 2006. The redemption offer document dated 29 June 2006 regarding Fortum’s redemption offer for the shares of Fortum Espoo will be supplemented by this release (including the attachment). Fortum Corporation Carola Teir-Lehtinen SVP, Corporate Communications For more information: SVP, Corporate Communications Carola Teir-Lehtinen, tel. +358 50 45 24118 Distribution: Helsinki Stock Exchange Key Media APPENDIX Fortum Espoo Oyj Interim Report January-June 2006