“Equipment at (operator) Ukrenergo facilities in Zaporizhzhia and Lviv regions was damaged,” the energy ministry said, adding that two employees were wounded and hospitalised in Zaporizhzhia.

It said this was “the eighth massive, combined attack on energy infrastructure facilities” in the past three months.

More than two years into the Russian invasion, targeted missile and drone attacks have crippled Ukraine’s electricity generation capacity and forced Kyiv to impose blackouts and import supplies from the European Union.

Ukrainian authorities on Thursday said energy infrastructure, including a power station, had been damaged in a major overnight attack that left seven employees wounded.

DTEK, the largest private energy company in Ukraine, said the strikes caused “serious damage” at one of its plants.

Russian attacks have destroyed half of Ukraine’s energy capacity, according to President Volodymyr Zelensky.

Zelensky said this week that all hospitals and schools in Ukraine must be equipped with solar panels “as soon as possible”.

“We are doing everything to ensure that Russian attempts to blackmail us on heat and electricity fail,” he said on Thursday.