“Another audacious attack by the occupiers on our infrastructure. The enemy continues to strike energy facilities in various regions across our country,” the deputy head of the Ukrainian president’s office, Kyrylo Tymoshenko, said in a Saturday morning social media post.

“A total of 18 missiles were destroyed by air defense forces,” he wrote. “Specialists immediately begin repair works on the affected areas.”

A series of air strikes over the last two weeks has destroyed almost a third of the country’s power stations, leaving a little under 1.5 million residents without power.

Ukraine’s electrical utility operator said it was limiting supply in multiple regions, including Kyiv. Both intentional and unintentional power disruptions are being reported across much of the country.

Air strikes also led to a large fire in the city of Smila near the Tyasmyn River, a tributary of the Dnieper River.

Meanwhile, Russian-installed authorities began ordering civilians in some of the regions it recently annexed to evacuate their cities immediately ahead of a looming Ukrainian military advance.

The Russian-backed authorities in the occupied port city of Kherson ordered people to leave and head across to the other side of the Dnieper River.

Regional administrators said “all civilians of Kherson need to leave the city immediately,” Russian news agency TASS reported. “Kherson’s civilian residents, offices and ministries of the civil administration need to relocate to the left bank of the Dnieper.”

Civilians who remained behind risked artillery attacks and possible “terrorist attacks,” they said.

On Thursday, Ukrainian President Volodymyr Zelensky warned that Russia was plotting to blow up a large hydroelectric dam in the area, which would cause devastating flooding to Kherson along with 80 other towns and villages. He said Russia would carry it out as a so-called false flag operation, blaming Ukraine for the damage.