Regulatory News

July 30^th, 2012

Notice of 1Q 2012 IFRS results

JSC RusHydro (ticker symbol: MICEX-RTS, LSE: HYDR; OTCQX: RSHYY) announces that it will publish its first unaudited consolidated financial results under International financial reporting standards (IFRS) for the 1^st quarter of 2012 on Thursday, August 2, 2012.

The results will be published at 15.00 (Moscow time) in the form of an unaudited report, accompanied by press-releases in English and Russian languages.

RusHydro expects to post its 1H 2012 consolidated financial results under IFRS in late October 2012.

For more information:

JSC RusHydro, Investor Relations Department

Tel. +7 (495) 225-3232 ext. 1319, 1394, 1607

ir@rushydro.ru

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.