English

electropower

From electro- + power.

Ancient Greek ἤλεκτρον ‘amber’

French electrum

French électro-

Proto-Italic *possom

Latin possum ‘to be able, can’

Vulgar Latin potēre

Old French poeir ‘to be able; power, ability’

Middle English power

English power

Today it means

noun electrical power

Language periods are conventional ranges, not dates for this word.

Etymograph / electropower