揚よう水すい発はつ電でん

noun

pumped-storage hydroelectricity; pumped-storage power generation

Technical term for a method of storing energy by pumping water to a higher reservoir and releasing it to generate electricity when needed.

• 揚よう水すい発はつ電でんは、夜や間かんの余よ剰じょう電でん力りょくを利り用ようして水みずをくみ上あげる。

  Pumped-storage hydroelectricity uses surplus electricity at night to pump water up.