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The Okutataragi Pumped Storage Power Station (奥多々良木発電所, Okutataragi hatsudensho) is a large pumped-storage hydroelectric power station in Asago, in the Hyōgo Prefecture of Japan.
With a total installed capacity of 1,932 megawatts (2,591,000 hp), it is one of the largest pumped-storage power stations in the world, and the largest in Japan.
The facility is currently run by the Kansai Electric Power Company.