Pumped storage data
Project name Project size (MW) Maximum discharge (m3/sec) Effective head (m)
Tokyo Electric Power Company      
Shin Tagasegawa PSP (1981) 1280 644 229m
Tamahara PSP (1986) 1200 276 518
Imaichi PSP (1991) 1050 240 524
Electric Power Development Corporation      
Shin Toyone PSP (1973) 1125 645 203
Okukiyotsu PSP (1982) 1000 260 470
Shimogo PSP (1991) 1000 314 387
Kansai Electric      
Okutataragi PSP (1998) 1932 376 383
Okawachi PSP (1995) 1280 382 395
Okuyoshino PSP (1980) 1206 288 505
Key: (date in brackets) = year commissioned