Moscow, 25 April 2008. RAO "UES of Russia" sent a letter to ZAO "MICEX Stock Exchange", OAO "Russian Trading System Stock Exchange", and NP "Moscow Stock Exchange" requesting the stock exchanges to suspend trading in RAO UES shares on 6 June 2008.

Pursuant to the resolution of the Board of Directors of RAO "UES of Russia" of 4 April 2008, 6 June 2008 was fixed as the record date for determining RAO UES shareholders entitled to shares in the companies spun off from RAO "UES of Russia"—five WGCs, thirteen TGCs, FGC, HydroWGC, INTER RAO UES, IDC Holding, and OAO "RAO Energy Systems of the East".

If the investor purchases RAO UES shares on the OTC market after 6 June 2008 and holds them until the completion of the Company's reorganization (1 July 2008), he will acquire only shares in Federal Grid Company, and not shares of each of the energy companies spun off from RAO "UES of Russia".

That is why RAO "UES of Russia" recommends that investors and shareholders abstain from transactions in RAO UES shares after 6 June and register the transfer of title to their shares prior to this date.

On the same date, the books will be closed for DRs representing RAO UES shares. Issuance and cancellation of DRs will be stopped on 30 May 2008.

If their holders timely submit the necessary information and their account data, they will be able to acquire DRs or shares in the spin-off companies. The cash proceeds from the sale of shares in the spin-off companies will be received by the shareholders that will not submit necessary information within the specified timeframe or announce that they would like to receive cash instead of shares (cash-out).

This announcement was published as information about a substantial fact in the Interfax newswire at 14:57 hours Moscow time on 25 April 2008 in compliance with the requirements of the Federal Service for Financial Markets of Russia.