"It is necessary to light a candle so that ... does not explode, because everything is old," RIA Novosti quotes him.
Moskal added that the power units at the Ukrainian nuclear power plants are working with a large load.
In his opinion, this could "end in a great tragedy."
On November 13, the press service of the Ukrenergo company reported that in Ukraine state thermal power plants were loaded by 10%, the rest were without coal or are being repaired.