水力 すいりょく発電 はつでんじゃありませんでした
suiryokuhatsudenjārimasendeshita

Noun
Desu Copula
no-Adjective

The polite, past negative form of 水力発電

1. It was not hydroelectric power.; It wasn't hydropower.

Past/Perfective
Negative
Polite
Terminal Form