OGK-4 SHARES START BEING TRADED ON QUOTATION LIST B AT MICEX STOCK EXCHANGE

As of today, registered ordinary shares in Generation Company Four of the Wholesale Market of Power and Energy (OGK-4) start being traded at MICEX on Quotation List B under the code of OGKD.

The decision to include the shares in Quotation List B was approved by the MICEX Stock Exchange Board of Directors on December 19, 2006. From August 2, 2006, OGK-4 shares had been traded on the MICEX non-listed stock list.

From January 9, 2007, OGK-4 shares have also been traded on RTS Quotation List B.