Statement of Material Fact "Information Concerning Facts Which Resulted in Non-Recurring Increase (Decrease) in Issuer’s Net Profit or Net Losses by More Than 10 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. Fact(s) which resulted in a non-recurring increase in the issuer’s net profit or net losses by more than 10 percent.

• A significant increase in the absolute value of net profit for quarter 4 of 2006 compared with the absolute value of net profit for quarter 3 of 2006 is due to the revaluation of financial investments of RAO UES of Russia at the current market value in quarter 4 of 2006.

2.2. Date of fact(s) which resulted in a non-recurring increase (decrease) in the issuer’s net profit or net losses by more than 10 percent.

• April 2, 2007.

2.3. Value of the issuer’s net profit (net losses) for the reporting period (quarter, year) preceding the reporting period in which the fact(s) concerned arose.

• Absolute value of net profit for quarter 3 of 2006: 10,697 million rubles.

2.4. Value of the issuer’s net profit (net losses) for the reporting period (quarter, year) in which the fact(s) concerned arose.

• Absolute value of net profit for quarter 4 of 2006: 722,078 million rubles.

2.5. Change in the issuer’s net profit (net losses) in absolute terms and percentage-wise.

• Change of 711,381 million rubles, or 6,650%.