During the night, Moscow's missile and drone strikes have caused electricity outages in extensive areas of the capital city, Kyiv.
Nine people were wounded while local people in eastern neighborhoods were left without electricity and faced problems to water supplies, according to local authorities.
Meanwhile, a young boy was killed in a distinct Russian drone strike in the Zaporizhzhia region in the country's south-east, as reported by regional authorities.
Moscow has increased strikes on energy facilities over the last fortnight, while the country's government has called for "concrete actions" from allies to exert influence on Moscow.
"What is required is not superficial actions but firm measures - from the United States, the EU and the G7 - in delivering air defence systems and applying restrictions," mentioned in a social media post.
Officials stated that hundreds of unmanned aircraft and over thirty missiles targeted the country's power systems, describing such strikes as "strategic and deliberate" and against "critical infrastructure" as temperatures become colder.
The energy minister said Moscow was "launching a major assault" and maintenance teams were striving to fix the damage.
A barrage of missiles struck energy infrastructure and civilian homes in Kyiv.
Five out of the nine people hurt in the attacks on the city have been transported for medical care, as confirmed by city authorities.
Area administrators said the city experienced significant strikes during nighttime hours. A young boy was killed and three other people were injured.
The attacks follow nights of bombing campaigns in the territory, parts of which remain under the control of Moscow's military.
The entire country is under warning for advanced weapon attacks, which are harder to spot.
Authorities told journalists that Moscow was purposely seeking to destroy the electrical infrastructure, with assaults already affecting fuel infrastructure.
Officials stated technical personnel and authorities were bracing for additional strikes.