During the night, Russian missile and drone strikes have caused blackouts in large parts of Ukraine's capital, Kyiv.
A number of civilians were hurt while local people in eastern districts were plunged into darkness and dealt with problems to drinking water, per reports from local authorities.
Simultaneously, a minor was killed in a separate Russian drone strike in the Zaporizhzhia area in the southern area, based on information from local officials.
Moscow has intensified assaults on energy facilities over recent weeks, while officials has demanded "substantial measures" from partner nations to apply pressure on Russia.
"The necessity is not superficial actions but strong steps - from the America, the EU and the major economies - in supplying air defence systems and enforcing sanctions," he wrote in a public message.
He said that 450 drones and several dozen missiles targeted Ukraine's energy infrastructure, describing such strikes as "cynical and calculated" and against "everything that sustains normal life" as temperatures become colder.
Government representatives said Moscow was "launching a major assault" and repair crews were laboring to fix the damage.
A wave of strikes hit electrical systems and civilian homes in the capital.
Multiple people wounded in the attacks on the capital have been transported for medical care, according to local officials.
Regional authorities said the city experienced significant strikes overnight. A young boy was killed and multiple civilians were injured.
The attacks succeed nights of aerial attacks in the area, sections of which remain under the control of invading troops.
The whole nation is under warning for hypersonic Kinzhal missile strikes, which are tougher to identify.
National leaders told journalists that Moscow was intentionally trying to damage the electrical infrastructure, with strikes already affecting energy systems.
He said utility staff and government agencies were anticipating further attacks.