だい規模 きぼ停電 ていでんじゃなかったです
daiki bote idenjanakattadesu

Noun
Desu Copula

The polite, past negative form of 大規模停電

1. Wasn't a large-scale power outage.; It wasn't a large-scale power outage.

Past/Perfective
Negative
Polite
Casual Register