During the night, Moscow's missile and drone strikes have led to blackouts in large parts of Ukraine's capital, Kyiv.
Nine people were injured while inhabitants in the city's east were left without electricity and faced disruption to water supplies, as stated by local authorities.
Meanwhile, a seven-year-old child was fatally injured in a distinct assault in the Zaporizhzhia area in the country's south-east, as reported by local officials.
Moscow has intensified attacks on electrical systems over the past few days, while the country's government has requested "concrete actions" from international partners to exert influence on Russia.
"What is required is not window dressing but strong steps - from the United States, the EU and the G7 - in delivering air defence systems and applying restrictions," he wrote in a online statement.
He said that hundreds of unmanned aircraft and more than 30 projectiles targeted Ukraine's energy infrastructure, characterizing such attacks as "strategic and deliberate" and against "essential services" as temperatures become colder.
Energy officials said Moscow was "inflicting a massive strike" and repair crews were striving to repair systems.
A wave of strikes hit electrical systems and residential structures in Kyiv.
Several of the people hurt in the attacks on the city have been taken to hospital, according to municipal representatives.
Local officials said the metropolitan region experienced significant strikes throughout the evening. A seven-year-old child lost their life and three other people were hurt.
The assaults come after evenings of air raids in the area, sections of which are currently controlled by Moscow's military.
The whole nation is on alert for sophisticated projectile assaults, which are tougher to spot.
Government officials told journalists that Russia was intentionally trying to destroy the country's energy grid, with strikes already disrupting gas facilities.
Authorities confirmed technical personnel and authorities were anticipating further attacks.