NEW YORK, April 15, 2009 — The Bank of New York Mellon, the global leader in asset management and securities servicing, has been selected by JSC "Holding MRSK" as the depositary bank for its global depositary receipt (GDR) ordinary and preferred programs. For both the ordinary and preferred GDR programs, each JSC Holding MRSK global depositary receipt represents 400 ordinary shares respectively. The ordinary and preferred shares trade on the Moscow Interbank Currency and on the Russian Trading System under the symbol "MRKH." The JSC Holding MRSK GDRs and shares have not been registered under the U.S. Securities Act of 1933 and may not be offered or sold in the U.S. absent registration or an applicable exemption from the registration requirements.

JSC Holding MRSK, a management company established from the spin-off of RAO UES of Russia, will take a controlling stake in all Interregional Distribution Grid Companies (IDGCs). JSC Holding MRSK holds controlling stakes in IDGC of Centre, IDGC of Center & Volga Region, IDGC of North-West, IDGC of Volga, IDGC of South, IDGC of Northern Caucasus, IDGC of Ural, IDGC of Siberia, IDGC of Moscow, Lenenergo, Tyumenenergo, regional distributors Kubanenergo and Tomsk, and others.

"As the leading depositary bank, we look forward to helping JSC Holding MRSK and other newly formed companies resulting from the RAO UES spin-off to increase their international profile in the years ahead," said Michael Cole-Fontayn, chief executive officer of The Bank of New York Mellon's Depositary Receipt Division. "The establishment of JSC Holding MRSK marks the end of the most complex corporate action to date involving depositary receipts, and The Bank of New York Mellon is proud to have played a fundamental role in the broad restructuring of Russia's energy sector."

The Bank of New York Mellon acts as depositary for more than 1,300 sponsored American and global depositary receipt programs, working in partnership with leading companies from 64 countries. With an unrivalled commitment to helping securities issuers succeed in the world's rapidly evolving financial markets, the Company delivers the industry's most comprehensive suite of integrated depositary receipt, corporate trust and stock transfer services. Additional information is available at www.bnymellon.com/dr.

The Bank of New York Mellon Corporation is a global financial services company focused on helping clients manage and service their financial assets, operating in 34 countries and serving more than 100 markets. The company is a leading provider of financial services for institutions, corporations and high-net-worth individuals, providing superior asset management and wealth management, asset servicing, issuer services, clearing services and treasury services through a worldwide client-focused team. It has $20.2 trillion in assets under custody and administration, $928 billion in assets under management, services more than $11 trillion in outstanding debt, and processes global payments averaging $1.8 trillion per day. Additional information is available at www.bnymellon.com.

This release is for informational purposes only. The Bank of New York Mellon provides no advice, recommendation, or endorsement with respect to any company or securities. Nothing herein shall be deemed to constitute an offer to sell or a solicitation of an offer to buy securities. Depositary Receipts: Not FDIC, State or Federal Agency Insured; May Lose Value; No Bank, State or Federal Agency Guarantee.