Throughout the evening, Moscow's missile and drone strikes have led to blackouts in large parts of Ukraine's capital, Kyiv.
Several individuals were hurt while residents in eastern districts were plunged into darkness and faced interruptions to drinking water, according to local authorities.
Simultaneously, a minor was fatally injured in a different aerial attack in the southeastern region in the country's south-east, based on information from area administrators.
Moscow has increased attacks on energy facilities over the last fortnight, while officials has demanded "concrete actions" from international partners to apply pressure on Russia.
"The necessity is not superficial actions but firm measures - from the US, European nations and the G7 - in providing protection systems and implementing penalties," he wrote in a social media post.
Officials stated that 450 drones and several dozen missiles struck Ukraine's energy infrastructure, characterizing such strikes as "premeditated" and against "critical infrastructure" as temperatures become colder.
Government representatives said Moscow was "launching a major assault" and maintenance teams were striving to fix the damage.
A series of attacks damaged power facilities and residential structures in the capital.
Five out of the nine people hurt in the assaults on the city have been transported for medical care, according to municipal representatives.
Area administrators said the metropolitan region endured significant strikes throughout the evening. A young boy died and multiple civilians were injured.
The attacks follow evenings of bombing campaigns in the region, sections of which remain under the control of Moscow's military.
The whole nation is in a state of readiness for hypersonic Kinzhal missile strikes, which are harder to identify.
National leaders told journalists that Russia was purposely seeking to destroy the national power system, with assaults already impacting fuel infrastructure.
Authorities confirmed utility staff and officials were preparing for further attacks.
