Pumped-Storage Hydroelectric Plants in Japan

Honkawa Location: Kochi Operator: Shikoku Electric Power Co Configuration: 2 X 300 MW FPT Operation: 1982-1984 T/G supplier: MHI, Melco Photograph courtesy of Shikoku Electric Power Co Ltd Posted 3 Oct 2001	Kannagawa Location: Gunma Operator: Tokyo Electric Power Co Configuration: 2 X 470 MW FPT Francis Operation: 2005-2012 T/G supplier: Toshiba, Hitachi Quick facts: Construction on this plant started in Jul 1993. Unit-1 went commercial on 22 Dec 2005 and Unit-2 completed on 7 Jun 2012. Four addtional units were in the original plan but are not currently scheduled. The powerhouse is about 1,600ft below ground and is supplied by water stored behind two dams in two different prefectures. These are the largest pumped-turbine sets in the world and are of a new more efficient splitter design. The 525-MVA air-cooled generators are also the world's largest of their type and scaled up from the 475-MVA machines at the Kazunogawa power station. The T/G sets operate with an effective head of 653m. Photograph courtesy of Tokyo Electric Power Co Re-posted 16 Mar 2013	Kazunogawa Location: Yamanishi Operator: Tokyo Electric Power Co Configuration: 2 X 412 MW FPT Operation: 1999-2000 T/G supplier: Hitachi, MHI, Melco Quick facts: Planning for this PSP began in 1995 and the first unit commissioned in Dec 1999 followed by the second in Jun 2000. Two additional units were deferred. Photograph courtesy of Tokyo Electric Power Co Posted 12 Sep 2006
Matanogawa Location: Tottori Operator: Chugoku Electric Power Co Configuration: 4 X 300 MW FPT Operation: 1986-1987 T/G supplier: Hitachi EPC: Fujita, Maeda Quick facts: Planning for this PSP began in 1973 and a construction applicaiton was made in 1977. Construction started 1980 and the first unit went commercial in Oct 1986. Four more units were in the original plan. The concrete gravity dam is 69m tall. Photograph courtesy of Chugoku Electric Power Co Ltd Posted 15 Sep 2001	Mazegawa Daiichi Location: Gifu Operator: Chubu Electric Power Co Configuration: 2 X 144 MW FPT Operation: 1974-1976 T/G supplier: Hitachi Photograph courtesy of Chubu Electric Power Co Posted 13 Mar 2004	Midono Location: Nagano Operator: Tokyo Electric Power Co Configuration: 2 X 65 MW Francis, 2 X 65 MW FPT Operation: 1969-1970 T/G supplier: Fuji, Hitachi Quick facts: On the Azusa River. Photograph by Qurren (wikimedia) Re-posted 31 Dec 2007
Okuyahagi Location: Aichi Operator: Chubu Electric Power Co Configuration: 3 X 115 MW, 3 X 260 MW FPT Operation: 1980-1981 T/G supplier: Hitachi, Toshiba Photograph courtesy of Chubu Electric Power Co Posted 13 Mar 2004	Shin Takasegawa Location: Nagano Operator: Tokyo Electric Power Co Configuration: 3 X 367 MW FPT Operation: 1981 T/G supplier: MHI, Toshiba Photograph courtesy of Tokyo Electric Power Co Posted 3 Apr 2004	Shin Toyone Location: Aichi Operator: J-Power Configuration: 5 X 225 MW FPT Operation: 1972-1973 T/G supplier: Toshiba Quick facts: On the Tenryu River. Photograph by Qurren (wikimedia) Posted 31 Dec 2007

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