Overnight, Russian missile and drone strikes have led to blackouts in large parts of the capital city, Kyiv.
Nine people were injured while local people in eastern neighborhoods were plunged into darkness and faced problems to water systems, according to city officials.
At the same time, a young boy was killed in a different assault in the Zaporizhzhia area in the southern area, according to regional authorities.
Moscow has escalated assaults on energy facilities over the last fortnight, while Ukrainian leadership has called for "substantial measures" from partner nations to exert influence on Russia.
"The necessity is not window dressing but strong steps - from the US, Europe and the major economies - in delivering protection systems and implementing sanctions," mentioned in a public message.
Officials stated that 450 drones and over thirty projectiles attacked energy facilities, labeling such strikes as "cynical and calculated" and against "essential services" as winter approaches.
Energy officials said Russia was "launching a major assault" and repair crews were laboring to repair systems.
A series of attacks hit power facilities and residential structures in Kyiv.
Five out of the nine people wounded in the strikes on the capital have been taken to hospital, as confirmed by local officials.
Regional authorities said the city experienced significant strikes during nighttime hours. A minor was killed and three other people were hurt.
The attacks follow periods of aerial attacks in the region, parts of which are currently controlled by Russian forces.
The entire country is in a state of readiness for hypersonic Kinzhal missile strikes, which are harder to detect.
Authorities told the media that Moscow was intentionally trying to damage the country's energy grid, with strikes already disrupting energy systems.
Officials stated energy workers and government agencies were anticipating further attacks.