STATEMENT OF DATA WHICH MAY HAVE A MATERIAL EFFECT ON THE VALUE OF SECURITIES OF THE JOINT-STOCK COMPANY

"CONCERNING PURCHASE BY THE JOINT-STOCK COMPANY OF THE STAKE IN THE AUTHORIZED (RESERVE) CAPITAL (UNIT FUND) OF THE OTHER PROFIT-MAKING ORGANIZATION WHICH CONSTITUTES AT LEAST 5 PERCENT OR IN THE PERCENTAGE OF ORDINARY SHARES IN THE OTHER JOINT-STOCK COMPANY WHICH CONSTITUTES AT LEAST 5 PERCENT AND THE CHANGE OF SUCH PERCENTAGE 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. Issuer’s 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:

- Vologda Sales Company (Open Joint-Stock Company) (OAO Vologda Sales Company) – Russian Federation, 160035, Vologda Oblast, Vologda, Prechistenskaya naberezhnaya, dom 68.

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 Vologda Sales Company before change: 49.00 %;

- stake held by RAO UES of Russia in the authorized capital of (percentage of ordinary shares in) OAO Vologda Sales 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 the shares in OAO Vologda Sales Company was performed on June 21, 2007.

3. Signature

Head of the Department for Corporate Governance and Shareholder Relations of the Corporate Center of RAO UES of Russia (under Power of Attorney No. 208 of November 07, 2006) A. V. Gabov

June 21, 2007