Fortum Oyj — M&A Activity 2008

Apr 29, 2008

Disclosure 258348

Fortum - Tender offer

Fortum files mandatory offer to the minority shareholders of Russian TGC-10

Fortum Corporation Stock exchange release 29 April 2008 Fortum files mandatory offer to the minority shareholders of Russian TGC-10 Fortum Corporation's fully-owned subsidiary, Fortum Russia B.V., has today filed with the Russian Territorial Generating Company No. 10 (TGC-10) the mandatory public tender offer to TGC-10 minorities. The period of offer is from 30 April until 18 July 2008. The terms and conditions of the mandatory offer were published yesterday and can be viewed at Fortum's website www.fortum.com. Fortum Corporation Maria Romantschuk Senior Vice President, Communications Distribution: OMX Nordic Exchange Helsinki Key media www.fortum.com