RusHydro (previous name: Hydro-OGK, ) is a Russian hydroelectricity company. As of early 2012, it had a capacity of 34.9 gigawatts.[3] In late 2009, it was the world's second-largest hydroelectric power producer[4] and is the country's largest power-generating company and the largest successor to RAO UES. The partly government-owned conglomerate underwent a major consolidation beginning in July 2007.[5] As of 2011, the head of the company was Evgeny Dod.[4] Its head office is in Obruchevsky District, South-Western Administrative Okrug, Moscow.[6] In 2021, the company's revenue amounted to 190 billion rubles.[7]