Local residents start an electric generator during a power outage in Lviv on November 28, 2024, amid the Russian invasion of Ukraine. More than a million Ukrainians were left without power in freezing cold temperatures on November 28, 2024 after a massive nationwide Russian missile and drone attack. (Photo by YURIY DYACHYSHYN / AFP)

Local residents walk past electric generators supplying electricity to a cafe during a power outage in Lviv on November 28, 2024, amid the Russian invasion of Ukraine. More than a million Ukrainians were left without power in freezing cold temperatures on November 28, 2024 after a massive nationwide Russian missile and drone attack. (Photo by YURIY DYACHYSHYN / AFP)

A local resident starts an electric generator during a power outage in Lviv on November 28, 2024, amid the Russian invasion of Ukraine. More than a million Ukrainians were left without power in freezing cold temperatures on November 28, 2024 after a massive nationwide Russian missile and drone attack. (Photo by YURIY DYACHYSHYN / AFP)

A local resident starts an electric generator during a power outage in Lviv on November 28, 2024, amid the Russian invasion of Ukraine. More than a million Ukrainians were left without power in freezing cold temperatures on November 28, 2024 after a massive nationwide Russian missile and drone attack. (Photo by YURIY DYACHYSHYN / AFP)