Overnight, Russian missile and drone strikes have led to blackouts in large parts of the capital city, Kyiv.
Nine people were hurt while local people in the city's east were left without electricity and faced disruption to water supplies, as stated by local authorities.
Meanwhile, a young boy was killed in a separate assault in the Zaporizhzhia region in the southern area, based on information from local officials.
Russian forces has increased strikes on power infrastructure over recent weeks, while officials has called for "substantial measures" from allies to apply pressure on Russia.
"What's needed is not symbolic gestures but strong steps - from the United States, European nations and the Group of Seven - in supplying protection systems and enforcing sanctions," mentioned in a online statement.
Authorities reported that 450 drones and over thirty projectiles struck Ukraine's energy infrastructure, characterizing such assaults as "cynical and calculated" and against "critical infrastructure" as winter approaches.
Government representatives said Moscow was "launching a major assault" and repair crews were laboring to restore power.
A barrage of missiles hit electrical systems and apartment buildings in the capital.
Five out of the nine people injured in the strikes on the city have been transported for medical care, as confirmed by city authorities.
Local officials said the urban area endured intense attacks during nighttime hours. A young boy lost their life and multiple civilians were wounded.
The attacks succeed nights of bombing campaigns in the area, parts of which are currently controlled by invading troops.
The entire country is in a state of readiness for advanced weapon attacks, which are harder to identify.
National leaders told reporters that Russia was purposely seeking to destroy the country's energy grid, with strikes already affecting energy systems.
Authorities confirmed technical personnel and authorities were bracing for further attacks.