noun
grid storage battery
Technical term used in energy and power systems for large-scale batteries connected to the electrical grid.
系統用蓄電池は再生可能エネルギーの普及に不可欠だ。
Grid storage batteries are essential for the spread of renewable energy.
Compound of 系統 (grid/system), 用 (for), and 蓄電池 (storage battery).