電力でんりょく需給じゅきゅう逼迫ひっぱく警報けいほうでした
denryokujukyūhippakukeihōdeshita

Noun
Desu Copula

The polite past form of 電力需給逼迫警報

1. Power supply/demand emergency alert was issued.; Power was in short supply.

Past/Perfective
Polite