KIEV, November 15. /TASS/. Emergency power outages began in all Ukrainian regions on Tuesday following those in the capital city, Kiev Mayor Vitaly Klichko said.

"Emergency electricity outages began across the entire Ukraine, including the capital city. It is a necessary step to balance the energy system and avoid possible equipment failures. Schedules of stabilization shutdowns are not working so far," he wrote on his Telegram channel.

According to Klichko, at least half of the population is cut off from electricity.

An air-raid warning was issued across all of Ukraine on Tuesday.