noun
energy storage
Technical term used in engineering, physics, and energy policy contexts.
再生可能エネルギーの普及には、効率的なエネルギー貯蔵技術が不可欠だ。
Efficient energy storage technology is essential for the spread of renewable energy.
蓄電 refers specifically to storing electricity, while エネルギー貯蔵 is broader and includes thermal, chemical, and mechanical storage.
Compound of エネルギー (energy) and 貯蔵 (storage).