| Okutataragi Pumped Storage Power Station | |
| Coordinates: | 35.2367°N 134.8564°W |
| Country: | Japan |
| Location: | Asago, Hyōgo, Japan |
| Status: | O |
| Construction Began: | 1970 |
| Opening: | 1974 |
| Operator: | KEPCO |
| Res Name: | Kurokawa Reservoir |
| Res Capacity Total: | 33387000m2 |
| Lower Res Name: | Tataragi Reservoir |
| Lower Res Capacity Total: | 19440000m2 |
| Plant Capacity: | 1932MW |
The is a large pumped-storage hydroelectric power station in Asago, in the Hyōgo Prefecture of Japan. With a total installed capacity of,[1] 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.[2]
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.
The Kurokawa Reservoir, the upper reservoir, has a capacity of 33387000m2, a catchment area of, and a reservoir surface area of, and is held back by the Kurokawa Dam ja|黒川ダム.
The embankment dam, located on the Ichi River, measures tall, wide, and is built with of material. The dam is located at .
The Tataragi Reservoir, the lower reservoir, has a capacity of 19440000m2, a catchment area of, and a reservoir surface area of, and is held back by the Tataragi Dam ja|多々良木ダム.
The dam measures tall, wide, and is built with 1462000m2 of material. The dam is located at .