Okutataragi Pumped Storage Power Station

The Okutataragi Pumped Storage Power Station is a large pumped-storage hydroelectric power station in Asago, in the Hyōgo Prefecture of Japan. With a total installed capacity of, 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.

Kurokawa Reservoir

The Kurokawa Reservoir, the upper reservoir, has a capacity of, a catchment area of, and a reservoir surface area of, and is held back by the Kurokawa Dam.
The embankment dam, located on the Ichi River, measures tall, wide, and is built with of material.
The dam is located at.

Tataragi Reservoir

The Tataragi Reservoir, the lower reservoir, has a capacity of, a catchment area of, and a reservoir surface area of, and is held back by the Tataragi Dam.
The dam measures tall, wide, and is built with of material.
The dam is located at.