“The generation deficit in the energy system after the attack is huge,” RIA Novosti quotes Kovalenko as saying on social networks.
He noted that it is too early to predict the timing of recovery.
Kovalenko added that the company "Ukrenergo" has significantly reduced consumption in Ukraine, including in Kyiv.
As it became known earlier, critical and industrial infrastructure facilities were damaged in Kharkiv.
Shortly before this, Kyiv reported that critical infrastructure facilities had been hit in the city.