Okutataragi Pumped Storage Power Station

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Okutataragi Pumped Storage Power Station
Satellite view of the upper reservoir.
Country	Japan
Location	Asago, Hyōgo, Japan
Coordinates	35°14′12″N 134°51′23″E / 35.23667°N 134.85639°E / 35.23667; 134.85639
Status	Operational
Construction began	1970
Opening date	1974
Operator(s)	KEPCO
Upper reservoir
Creates	Kurokawa Reservoir
Total capacity	33,387,000 m3 (27,067 acre⋅ft)
Lower reservoir
Creates	Tataragi Reservoir
Total capacity	19,440,000 m3 (15,760 acre⋅ft)
Power Station
Installed capacity	1,932 MW (2,591,000 hp)

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.

Like most pumped-storage facilities, the power station utilizes two reservoirs, releasing and pumping as the demand rises and falls. Construction on the facility began in 1970 and was completed in 1974.