I don't know about most but it's certainly not unheard of in places with similar climates. https://www.news.com.au/national/south-australia/rolling-blackouts-or

I don't know about most but it's certainly not unheard of in places with similar climates. https://www.news.com.au/national/south-australia/rolling-blackouts-ordered-as-adelaide-swelters-in-heatwave/news-story/13394f19db1ee94a59f4036fccdc1ba7 https://www.news.com.au/national/south-australia/rolling-bla...