Change of expected record date for AGM

May 19th, 2011

RusHydro announces expected record date for AGM participation

JSC RusHydro (ticker symbol: RTS, MICEX, LSE: HYDR; OTCQX: RSHYY) announces that the Board of Directors will hold a meeting on May 20, 2011 to convene the Annual General Meeting of Shareholders (AGM).

Due to change of the date of the Board of Directors meeting from May 17, 2011 to May 20, 2011, the expected record date for AGM participation changes from May 19, 2011 (as was communicated earlier) to May 23, 2011.

The meeting will be devoted to the upcoming AGM and its agenda, and, among other items, recommendations for dividend pay-out for the year ended December 31, 2010.

DISCLAIMER

The information in this press release may contain projections or other forward-looking statements regarding future events or the future financial performance of RusHydro. One can identify forward-looking statements by terms such as "expect," "believe," "anticipate," "estimate," "intend," "will," "could," "may" or "might," the negative of such terms or other similar expressions. We wish to caution you that these statements are only predictions and that actual events or results may differ materially from these statements.

We do not intend to update these statements to reflect events and circumstances occurring after the date hereof or to reflect the occurrence of unanticipated events. Many factors could cause the actual results to differ materially from those contained in our projections or forward-looking statements, including, among others, general economic conditions, our competitive environment, risks associated with operating in Russia and rapid technological and market changes in our industries, as well as many other risks specifically related to RusHydro and its operations.