PRESENTATION OF INFORMATION THAT MAY HAVE A MATERIAL EFFECT ON THE VALUE OF SECURITIES OF THE JOINT-STOCK COMPANY

"ON ACQUISITION BY THE JOINT-STOCK COMPANY OF A STAKE IN THE AUTHORIZED (SHARE) CAPITAL (UNIT TRUST) OF THE OTHER PROFIT-MAKING ORGANIZATION WHICH CONSTITUTES AT LEAST 5 PERCENT OR A BLOCK OF SHARES IN THE OTHER JOINT-STOCK COMPANY WHICH CONSTITUTES AT LEAST 5 PERCENT AS WELL AS CHANGE IN SUCH BLOCK 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 each profit-making organization in which the stake held by the joint-stock company (the percentage of ordinary shares owned by the joint-stock company) changed:

• Ulyanovsk Transmission Networks Open Joint-Stock Company (??? Ulyanovsk Transmission Networks) – Russian Federation, 432042, Ulianovsk, ulitsa Stankostroitelei, dom 2.
• Orenburg Heat Generation Company (Open Joint-Stock Company) (??? Orenburgskaya TGK) – Russian Federation, 460024, Orenburg, ulitsa named after Marshall G. K. Zhukov, dom 44.

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) ??? Ulyanovsk Transmission Networks before change – 0.00%;
• stake held by RAO UES of Russia in the authorized capital of (percentage of ordinary shares in) ??? Ulyanovsk Transmission Networks after change – 100%.
• stake held by RAO UES of Russia in the authorized capital of (percentage of ordinary shares in) ??? Orenburgskaya TGK before change – 100%;
• stake held by RAO UES of Russia in the authorized capital of (percentage of ordinary shares in) ??? Orenburgskaya TGK 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 entities:

• The Report of the depositary operation related to the crediting of shares in OAO Ulyanovsk Transmission Networks to the client account of RAO UES of Russia was received by RAO UES of Russia on March 12, 2007.
• The Report of the depositary operation related to the debiting of the client account of RAO UES of Russia with shares in ??? Orenburgskaya TGK was received by RAO UES of Russia on March 12, 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 7, 2006) A. V. Gabov

March 12, 2007 Seal