LONDON — Ukrainians faced fresh Russian drone and missile strikes on energy infrastructure nationwide on Tuesday night into Christmas Day morning, with the energy minister in Kyiv warning of immediate power cuts.

Ukrainian President Volodymyr Zelenskyy wrote on Telegram, “Every Russian massive strike takes time to prepare. It is never a spontaneous decision. It is a conscious choice not only of targets, but also of time and date.”

Russian President Vladimir Putin, Zelenskyy said, “deliberately chose Christmas for an attack. What could be more inhuman? More than 70 missiles, including ballistic ones, and more than a hundred strike drones. The targets are our energy sector. They continue to fight for a blackout in Ukraine.”

“According to preliminary data, our defenders managed to shoot down more than 50 missiles and a significant part of the drones,” Zelenskyy said. “Unfortunately, there are hits. As of now, there are outages in several regions. Energy workers are working to restore the power supply as soon as possible.”

“The enemy attacks energy again massively,” Energy Minister German Galushchenko wrote in a statement posted to Facebook early Wednesday. Grid operators, he added, were implementing “necessary consumption restriction measures to minimize negative consequences for the energy system.”

When the security situation allows, “the power companies will specify the damage caused,” Galushchenko added. “Stay tuned for official announcements. While the danger lasts — stay in shelters!”

Russia’s Defense Ministry, meanwhile, said its forces shot down 59 Ukrainian drones overnight.

This year is the second in which Ukraine will officially celebrate Christmas on Dec. 25. Previously, many Ukrainians celebrated Christmas in January per the Orthodox calendar, as Russian Orthodox adherents still do.

“For the second time, we celebrate Christmas on the same date as one big family, one country,” Zelenskyy wrote on Telegram on Tuesday. “For the second time in modern history, Christmas unites all Ukrainians.”

“Today, we stand side by side, and we will not be lost,” Zelenskyy added. “In person, from afar, or in our hearts — Ukrainians are together today. And as long as we do this, evil has no chance.”