Planned rolling power outages caused by a heatwave driving up demand and a nuclear reactor that ceased operating for a time have hit southern Russia. Vasily Golubev, regional governor of the Rostov region, reported on Telegram that consumers would have their power cut for hours at a time. The regional power company in Sevastopol on the Russian-occupied Crimean Peninsula announced blackouts of 12 hours per day, with power supplied for two hours and then cut off for two hours. A reactor block in the Rostov nuclear power station switched off automatically on Tuesday afternoon, temporarily cutting…