地熱 ちねつ発電 はつでんではありませんでした
chi netsuhatsudendewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 地熱発電

1. Was not geothermal power generation.; It was not geothermal power.

Past/Perfective
Negative
Polite
Formal Register