When energy demand is low and therefore electricity less expensive, the turbines reverse and pump water from the lower reservoir back into the upper reservoir.
This process repeats depending upon energy demand and water availability.
Water released from the lower reservoir is used to power the Nakanosawa Power Station which uses 140.8 metres (462 ft) of hydraulic head to power a single 42 megawatts (56,000 hp) Francis turbine generator.
It was commissioned in May 1980.
When energy demand is low and therefore electricity less expensive, the turbines reverse and pump water from the lower reservoir back into the upper reservoir. This process repeats depending upon energy demand and water availability. Water released from the lower reservoir is used to power the Nakanosawa Power Station which uses 140.8 metres (462 ft) of hydraulic head to power a single 42 megawatts (56,000 hp) Francis turbine generator. It was commissioned in May 1980.
Shin-Takasegawa Pumped Storage Station