Neha Patil (Editor)

Imaichi Dam

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Country  Japan
Opening date  1986
Impounds  Togawa River
Construction began  1979
Status  Operational
Type of dam  Gravity, concrete
Height  76 m
Imaichi Dam httpsuploadwikimediaorgwikipediacommonsthu
Location  Nikkō, Tochigi Prefecture
Owner  Tokyo Electric Power Company
Similar  Kuriyama Dam, Shiobara Pumped Storage P, Tamahara Dam, Kannagawa Hydropower Plant, Tashiro Dam

inspire1 aerial shoot of imaichi dam

The Imaichi Dam (今市ダム) is a concrete gravity dam on the Togawa River located 4 kilometres (2.5 mi) west of Nikkō in Tochigi Prefecture, Japan. The dam serves as the lower reservoir for the 1,050 megawatts (1,410,000 hp) Imaichi Pumped Storage Power Station, while the Kuriyama Dam forms the upper. It is owned by TEPCO and was constructed between 1979 and 1986, with the first generator commissioned in 1988. Its reservoir can store 9,100,000 cubic metres (7,400 acre·ft) of water. Of that storage volume, 6,200,000 cubic metres (5,000 acre·ft) can be used for power generation.


Imaichi Pumped Storage Power Station

The power plant operates using the pumped storage hydroelectric method. During periods of high electricity demand, water is sent from the upper Kuriyama Reservoir to the power plant which contains 3 x 350 megawatts (470,000 hp) Francis pump turbines. Water discharged from the power plant then enters the Imaichi Reservoir. When demand is low, the pump-generators reverse mode and pump water from the lower reservoir back up to the upper. The process repeats as needed.


Imaichi Dam Wikipedia

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