Overnight, Russian missile and drone strikes have led to electricity outages in large parts of the capital city, Kyiv.
A number of civilians were wounded while local people in eastern neighborhoods were left without electricity and faced disruption to water supplies, according to municipal leaders.
At the same time, a minor was fatally injured in a different assault in the southeastern region in the country's south-east, as reported by regional authorities.
Russian forces has intensified attacks on energy facilities over recent weeks, while Ukrainian leadership has called for "substantial measures" from partner nations to exert influence on Moscow.
"What is required is not window dressing but strong steps - from the United States, European nations and the Group of Seven - in delivering air defence systems and enforcing penalties," he wrote in a social media post.
He said that numerous aerial vehicles and several dozen missiles struck Ukraine's energy infrastructure, labeling such attacks as "premeditated" and against "essential services" as temperatures become colder.
Energy officials said Moscow was "launching a major assault" and technical staff were laboring to fix the damage.
A wave of strikes damaged electrical systems and civilian homes in Kyiv.
Several of the people injured in the strikes on the capital have been hospitalized, per statements from city authorities.
Regional authorities said the metropolitan region endured heavy assaults overnight. A minor was killed and three other people were injured.
The strikes succeed evenings of bombing campaigns in the territory, portions of which are currently controlled by invading troops.
The whole nation is in a state of readiness for advanced weapon attacks, which are harder to detect.
Government officials told journalists that Russia was intentionally trying to destroy the national power system, with assaults already impacting gas facilities.
Authorities confirmed utility staff and officials were preparing for further attacks.
