During the night, Moscow's missile and drone strikes have led to power cuts in large parts of Ukraine's capital, Kyiv.
A number of civilians were injured while residents in eastern districts were left without electricity and encountered problems to water supplies, per reports from city officials.
Simultaneously, a young boy was fatally injured in a distinct aerial attack in the southeastern region in the country's south-east, according to regional authorities.
Moscow has increased strikes on power infrastructure over the past few days, while the country's government has requested "real steps" from allies to exert influence on Russia.
"What is required is not window dressing but firm measures - from the United States, the EU and the major economies - in supplying air defence systems and applying sanctions," was stated in a public message.
Authorities reported that numerous aerial vehicles and several dozen projectiles targeted Ukraine's energy infrastructure, characterizing such strikes as "cynical and calculated" and against "critical infrastructure" as temperatures become colder.
Government representatives said Moscow was "launching a major assault" and maintenance teams were striving to repair systems.
A barrage of missiles hit energy infrastructure and civilian homes in Kyiv.
Several of the people injured in the strikes on the capital have been transported for medical care, according to city authorities.
Area administrators said the metropolitan region came under intense attacks throughout the evening. A seven-year-old child lost their life and multiple civilians were hurt.
The assaults follow periods of aerial attacks in the area, sections of which remain under the control of Russian forces.
All of Ukraine is under warning for sophisticated projectile assaults, which are tougher to detect.
Government officials told reporters that Russia was intentionally trying to damage the electrical infrastructure, with attacks already impacting energy systems.
Authorities confirmed utility staff and officials were bracing for more assaults.
