洋上 ようじょう風力 ふうりょく発電 はつでんじゃありませんでした
yōjōfū ryokuhatsudenjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 洋上風力発電

1. Was not offshore wind power.; It wasn't offshore wind power.

Past/Perfective
Negative
Polite
Terminal Form