Overnight, Russian missile and drone strikes have resulted in power cuts in multiple districts of the capital city, Kyiv.
Nine people were injured while local people in the city's east were experienced blackouts and faced problems to water systems, according to local authorities.
At the same time, a minor was fatally injured in a different Russian drone strike in the Zaporizhzhia region in the country's south-east, according to area administrators.
Moscow has increased attacks on electrical systems over the last fortnight, while Ukrainian leadership has demanded "real steps" from international partners to increase pressure on Russia.
"What's needed is not superficial actions but strong steps - from the United States, European nations and the Group of Seven - in supplying air defence systems and implementing sanctions," mentioned in a social media post.
Authorities reported that 450 drones and more than 30 missiles struck energy facilities, labeling such assaults as "cynical and calculated" and against "critical infrastructure" as temperatures become colder.
Government representatives said Russia was "inflicting a massive strike" and repair crews were laboring to restore power.
A barrage of missiles hit electrical systems and apartment buildings in Kyiv.
Multiple people wounded in the strikes on the capital have been transported for medical care, per statements from municipal representatives.
Area administrators said the city endured intense attacks overnight. A young boy died and multiple civilians were hurt.
The attacks come after evenings of air raids in the region, portions of which are currently controlled by Moscow's military.
All of Ukraine is in a state of readiness for sophisticated projectile assaults, which are tougher to identify.
Authorities told journalists that Moscow was purposely seeking to demolish the electrical infrastructure, with assaults already affecting energy systems.
Authorities confirmed utility staff and government agencies were anticipating further attacks.