Kazunogawa Pumped Storage Power Station is a pumped-storage hydroelectric power station near Kōshū in Yamanashi Prefecture , Japan . The station is designed to have an installed capacity of and three of the four generators are currently operational , for a total operational capacity of 1200 MW . Construction on the power station began in 1993 and the first generator was commissioned on 3 December 1999 . The second was commissioned on 8 June 2000 . The third on become operational on 9 June 2014 , six year early due to post-power demand from the Great East Japan earthquake . The fourth and final generator is slate to be commissioned by 2024 . It is owned by TEPCO and was constructed at a cost of $ 2.2 billion USD
Great East Japan earthquake
2011 Tōhoku earthquake and tsunami
Kazunogawa Pumped Storage Power Station