October 22, 2009 JSC RusHydro (ticker symbol: HYDR; MICEX, RTS and LSE) announces that starting from October 23th, 2009, the Company’s additional share issue (Russian state registration no. 1-01-55038-037D from May 14th, 2009) will be admitted for trading on MICEX Stock Exchange without requiring the approval of listing procedures. The ticker symbol for the additional share issue will be: HYDR-037D.

The total number of additional shares issued by RusHydro was 14,681,412,135 shares with a par value of one (1) ruble per share.

As of October 7th, 2009, shares from the additional issue were admitted for trading on the classical market of the RTS “A1” quotation list, as part of the existing (main) issue of shares.

Shares from the additional issue will be combined with the existing RusHydro listed shares three months from the date that the Russian state registers the report of the issue results (tentatively scheduled for January 2010). Following this date, shares from the additional issue will be traded on MICEX’s “A1” quotation list, as part of the existing (main) issue of shares.