Statement of material fact "information on the issuer's record dates"

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.htmand
https://www.rao-ees.ru/ru/investor/reporting/show.cgi?content.htm

2. Content of Statement

2.1. Kind, category (type), series and other identification features èäåíòèôèêàöèîííûå ïðèçíàêè of registered securities: uncertificated registered ordinary shares, uncertificated registered A preference shares.

2.2. Purpose of preparing the list of owners of registered securities: participation in the annual general meeting.

2.3. Date as of which the list of owners of registered securities is prepared: May 11, 2007.

2.4. Date of preparation and number of minutes of the issuer's Board of Directors meeting which adopted a resolution on the date of preparation of the list of owners of the issuer's registered securities which is grounds for determining the date of preparation of such list: April 27, 2007, minutes No. 250

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