During the night, Moscow's missile and drone strikes have led to blackouts in extensive areas of Ukraine's capital, the Ukrainian capital.
Nine people were wounded while residents in the city's east were plunged into darkness and faced disruption to water supplies, according to local authorities.
At the same time, a seven-year-old child was fatally injured in a different assault in the Zaporizhzhia region in the country's south-east, as reported by area administrators.
Moscow has increased strikes on power infrastructure over the last fortnight, while officials has requested "substantial measures" from allies to increase pressure on Russia.
"The necessity is not symbolic gestures but strong steps - from the America, the EU and the G7 - in delivering air defence systems and implementing restrictions," he wrote in a online statement.
He said that hundreds of unmanned aircraft and more than 30 rockets targeted Ukraine's energy infrastructure, describing such assaults as "cynical and calculated" and against "everything that sustains normal life" as the weather cools.
Energy officials said Russia was "inflicting a massive strike" and maintenance teams were striving to fix the damage.
A barrage of missiles struck electrical systems and residential structures in the capital.
Five out of the nine people injured in the attacks on the city have been transported for medical care, as confirmed by municipal representatives.
Regional authorities said the urban area endured heavy assaults during nighttime hours. A young boy died and several individuals were wounded.
The strikes succeed nights of aerial attacks in the area, sections of which remain under the control of invading troops.
The entire country is on alert for hypersonic Kinzhal missile strikes, which are more difficult to identify.
Government officials told journalists that Moscow was deliberately attempting to damage the national power system, with attacks already affecting fuel infrastructure.
Authorities confirmed technical personnel and authorities were anticipating more assaults.
