The Shin-Takasegawa Pumped Storage Station uses the Takase River to operate a pumped storage hydroelectric scheme about 12 kilometres west of Ōmachi in Nagano Prefecture, Japan. Part of the system is within Chūbu-Sangaku National Park. Construction on the complex began in 1971, concluded in 1978 and the power station was commissioned in 1980. The power plant has a 1,280 megawatts installed capacity and its upper reservoir is created by the Takase Dam, a rock-fill dam — which at 176 metres in height is the tallest of its type in Japan. It is also the second tallest dam in Japan, next to Kurobe Dam.
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