独立 どくりつ発電 はつでん事業 じぎょう しゃじゃなかったです
dokuritsuhatsudenji gyōshajanakattadesu

Noun
Desu Copula

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

1. Was not an independent power producer.; Wasn't an independent power producer.

Past/Perfective
Negative
Polite
Casual Register