独立 どくりつ発電 はつでん事業 じぎょう しゃじゃありませんでした
dokuritsuhatsudenji gyōshajārimasendeshita

Noun
Desu Copula

The polite, past negative form of 独立発電事業者

1. Was not an independent power producer.; Was not a self-generating power company.

Past/Perfective
Negative
Polite
Terminal Form