Japan is asking some 37 million people living in and around Tokyo to use less electricity and ration air conditioning even amid a record heat wave that has seen temperatures in some parts of the country pass 40 degrees Celsius (104 degrees Fahrenheit).
source https://www.cnn.com/2022/06/28/asia/japan-heatwave-air-conditioning-power-electricity-shortage-climate-change-intl-hnk/index.html