Overnight, Russian missile and drone strikes have led to blackouts in large parts of Ukraine's capital, the Ukrainian capital.
Nine people were wounded while residents in the city's east were plunged into darkness and encountered problems to water systems, according to local authorities.
Meanwhile, a young boy was fatally injured in a separate assault in the Zaporizhzhia area in the country's south-east, according to regional authorities.
Russian forces has intensified strikes on energy facilities over the past few days, while Ukrainian leadership has called for "real steps" from allies to exert influence on Russia.
"The necessity is not window dressing but firm measures - from the United States, European nations and the G7 - in delivering defensive weapons and enforcing restrictions," mentioned in a social media post.
Authorities reported that hundreds of unmanned aircraft and several dozen projectiles struck the country's power systems, characterizing such strikes as "cynical and calculated" and against "everything that sustains normal life" as the weather cools.
Government representatives said Moscow was "inflicting a massive strike" and repair crews were striving to fix the damage.
A series of attacks struck energy infrastructure and apartment buildings in Kyiv.
Multiple people injured in the attacks on the city have been taken to hospital, as confirmed by local officials.
Area administrators said the urban area came under significant strikes overnight. A seven-year-old child died and three other people were injured.
The assaults succeed nights of aerial attacks in the area, parts of which are currently controlled by Moscow's military.
The whole nation is on alert for hypersonic Kinzhal missile strikes, which are tougher to detect.
Authorities told reporters that Moscow was intentionally trying to demolish the electrical infrastructure, with assaults already disrupting energy systems.
He said utility staff and officials were bracing for more assaults.