"CONCERNING CHANGE IN THE STAKE HELD BY THE JOINT-STOCK COMPANY IN THE AUTHORIZED CAPITAL OF THE OTHER PROFIT-MAKING ORGANIZATION WHICH CONSTITUTES AT LEAST 5 PERCENT OR IN THE PERCENTAGE OF SHARES IN THE OTHER JOINT-STOCK COMPANY WHICH CONSTITUTES AT LEAST 5 PERCENT IF IT BECOMES HIGHER OR LOWER THAN 5, 10, 15, 20, 25, 30, 50 AND 75 PERCENT"

1. General Information

1.1. Full company name of the issuer Unified Energy System of Russia

1.2. Short company name of the issuer UES of Russia

1.3. Issuer's place of business: 119526, Moscow, pr. Vernadskogo, d. 101, korp. 3.

1.4. Issuer's OGRN (Primary State Registration Number): 1027700043293

1.5. INN (Taxpayer Identification Number): 7705018828

1.6. Issuer's unique code assigned by the registration agency:00034-A

1.7. Webpage used by the issuer for disclosure of information: https://www.rao-ees.ru/ru/info/docs/show.cgi?content.htm and https://www.rao-ees.ru/ru/investor/reporting/show.cgi?content.htm

2. Content of Statement

2.1. Full name and place of business of profit-making organization in which the stake held by the joint-stock company in the authorized capital (the percentage of ordinary shares owned by the joint-stock company) changed:

- Norilsk-Taimyr Power Company (Open Joint-Stock Company) (OAO NTEK) – 663310, Krasnoyarsk Territory, Norilsk, ul. Veteranov, d. 19.

2.2. Stake held by the joint-stock company in the authorized capital and percentage of ordinary shares in the subsidiary and dependent business entity before and after change:

- stake held by RAO UES of Russia in the authorized capital of (percentage of ordinary shares in) OAO Norilsk-Taimyr Power Company before change: 49.00%.

    - stake held by RAO UES of Russia in the authorized capital of (percentage of ordinary shares in) OAO Norilsk-Taimyr Power Company after change: 0.00%.

2.3. Date of change in the stake held by the joint-stock company in the authorized capital of (percentage of ordinary shares in) the above-mentioned entity:

The operation related to the debiting of the client account of RAO UES of Russia for shares in OAO Norilsk-Taimyr Power Company was performed on May 8, 2007. The depositary operation report was received by RAO UES of Russia on May 10, 2007.

3. Signature

Deputy Head of the Department for Corporate Governance and Shareholder Relations of the Corporate Center of RAO UES of Russia (under Power of Attorney No. 245 of December 19, 2006) I. A. Zenyukov

May 10, 2007