Crimean "energy and fuel minister" Vadim Belik said on Friday, Censor.NET reports citing TASS news agency.
Read more: Ukraine to resume power supplies to occupied territories after debts settled, - Minister Nasalyk
"There is a total blackout in Crimea after the automatic emergency response system went off on the mainland," the "minister" said, adding that power supply to Crimea will be restored as soon as possible.
According to the Russian Energy Ministry, high temperatures in the Krasnodar Region, which supplies the peninsula with electricity, are the cause of the blackout.
A source in the Crimean occupation government told TASS that power supplies will be restored by 4 p.m. Moscow time (1 p.m. GMT).
Ukraine halted its power supply to Crimea from mainland Ukraine on Nov. 22, 2015 after two power lines were blown up in Chaplynka, the Kherson region. On Dec. 2, 2015, President Vladimir Putin of Russia launched electric power supply bridge from Kuban to Crimea. By April 2016 power supply to the occupied peninsula was restored in full.