During the night, Russian missile and drone strikes have led to blackouts in large parts of Ukraine's capital, Kyiv.
A number of civilians were hurt while residents in the city's east were experienced blackouts and faced disruption to water supplies, according to local authorities.
Simultaneously, a minor was killed in a distinct assault in the Zaporizhzhia area in the country's south-east, as reported by area administrators.
Moscow has intensified attacks on power infrastructure over the past few days, while Ukrainian leadership has demanded "substantial measures" from allies to exert influence on Moscow.
"What's needed is not superficial actions but firm measures - from the America, the EU and the Group of Seven - in delivering air defence systems and implementing restrictions," he wrote in a online statement.
Officials stated that 450 drones and more than 30 projectiles attacked energy facilities, describing such attacks as "strategic and deliberate" and against "critical infrastructure" as temperatures become colder.
Government representatives said Russia was "launching a major assault" and repair crews were working to fix the damage.
A barrage of missiles hit electrical systems and residential structures in the capital.
Five out of the nine people hurt in the strikes on the city have been transported for medical care, per statements from city authorities.
Regional authorities said the urban area endured intense attacks throughout the evening. A young boy was killed and several individuals were hurt.
The assaults succeed evenings of bombing campaigns in the region, parts of which remain under the control of Russian forces.
The whole nation is on alert for hypersonic Kinzhal missile strikes, which are tougher to identify.
Authorities told reporters that Moscow was purposely seeking to demolish the country's energy grid, with assaults already impacting fuel infrastructure.
He said energy workers and officials were preparing for additional strikes.
