noun
heavy electric power; heavy electrical
Technical term used in engineering and industry to refer to high-power electrical systems, equipment, or generation, as opposed to light-current or electronics.
重電気機器の製造がこの工場の主力事業だ。
Manufacturing heavy electrical equipment is the main business of this factory.
重電気部門は発電機や変圧器を扱う。
The heavy electric power division handles generators and transformers.
Compound of 重 (heavy, weighty) and 電気 (electricity). The term is a technical coinage from the early 20th century, modeled after English 'heavy electrical'.