Where heating is available, many cannot afford to adequately heat their homes. Only 32% of households reported being able to do so during the last heating season, a figure that dropped to just 1% in frontline regions.

Kyiv's centralised heating systems will be turned on, starting with social institutions such as schools, hospitals, and kindergartens. The decision was sparked by "extreme conditions" created by constant bombardment, Klitschko said.

Damage to energy facilities in the Kyiv region has also reduced water pressure in areas of the capital on the Dnipro River's right bank. Emergency specialists are switching power supplies to water pumping stations, Kyiv Mayor Vitali Klitschko said.