During the night, Moscow's missile and drone strikes have caused power cuts in extensive areas of the capital city, Kyiv.
Several individuals were hurt while residents in eastern districts were left without electricity and encountered problems to water supplies, per reports from municipal leaders.
At the same time, a minor was fatally injured in a separate assault in the Zaporizhzhia area in the southeastern part, according to regional authorities.
Russian forces has intensified strikes on energy facilities over recent weeks, while Ukrainian leadership has called for "real steps" from international partners to apply pressure on Russia.
"What is required is not symbolic gestures but firm measures - from the United States, the EU and the G7 - in providing air defence systems and implementing restrictions," was stated in a online statement.
Authorities reported that 450 drones and over thirty rockets attacked Ukraine's energy infrastructure, describing such strikes as "strategic and deliberate" and against "critical infrastructure" as temperatures become colder.
Government representatives said Moscow was "launching a major assault" and repair crews were working to restore power.
A barrage of missiles damaged electrical systems and residential structures in the capital.
Several of the people wounded in the assaults on the city have been transported for medical care, per statements from local officials.
Regional authorities said the urban area came under heavy assaults throughout the evening. A young boy was killed and several individuals were wounded.
The strikes come after nights of bombing campaigns in the area, sections of which remain under the control of Moscow's military.
All of Ukraine is on alert for advanced weapon attacks, which are tougher to detect.
Authorities told the media that Moscow was deliberately attempting to damage the country's energy grid, with assaults already affecting gas facilities.
Authorities confirmed energy workers and government agencies were anticipating further attacks.