According to a request of TGC-1 JSC RTS Stock Exchange will remove ordinary shares of Company from RTS list “B” to non-listed securities since April 30, 2011

The Board of Directors appointed Andrey Filippov as a new General Director of the TGC-1 since May 1, 2011.

Board of Directors recommended to pay 5% dividends for 2010 full year that is about 180.3 mn RUR.

Alexey Miller, The Gazprom Deputy Chairman of the Board of Directors, Chairman of the Management Committee, took part in the setting in the commercial operation of the new CCGT-unit at the Yuzhnaya CHP of JSC TGC-1.

JSC “TGC-1” releases its audited consolidated Financial Statements for the period ended December 31, 2010 prepared in accordance with International Financial Reporting Standards (IFRS).

April 5, 2011 — TGC-1 finalized the complex refurbishment of the 2nd unit at the Iovskaya HPP (the Niva HPPs Cascade).

TGC-1 will publish its unaudited financial report under International Financial Reporting Standards (IFRS) for 2010 year on Tuesday, April 5, 2011 and hold a conference-call for investors and analysts to discuss Company’s performance for FY 2010.

TGC-1 releases its financial statement for 2010 according to Russian accounting standards.

New CCGT-450 unit at the Yuzhnaya CHP has passed pre-commisioning tests, the final stage before its operation market activity.

St. Petersburg, March 1, 2011 — Pervomayskaya CHP starts operation according to the agreement signed on the submission of capacity. This is the pilot 180 MW CCGT unit 180MW passed pre-commissioning performance tests in October, 2010.