OJSC Power Machines (translit. Siloviye Mashiny abbreviated as Silmash, Russian: ОАО «Силовы́е маши́ны») is a Russian energy systems machine-building company founded in 2000. It is headquartered in Saint Petersburg. Power Machines manufactures steam turbines with capacity up to 1,200 MWe, including turbines for nuclear power plants. Its portfolio consists of turbine generators for the Leningrad Nuclear Power Plant II and the Novovoronezh Nuclear Power Plant II. Also, Power Machines has supplied equipment to 57 countries other than Russia with significant market in Asia.