Throughout the evening, Russian aerial assaults have led to blackouts in large parts of Ukraine's capital, Kyiv.
Nine people were hurt while residents in eastern neighborhoods were plunged into darkness and faced problems to drinking water, as stated by local authorities.
Meanwhile, a young boy was killed in a separate assault in the Zaporizhzhia region in the southeastern part, according to regional authorities.
Russian forces has escalated strikes on energy facilities over the last fortnight, while Ukrainian leadership has demanded "concrete actions" from partner nations to increase pressure on Moscow.
"The necessity is not symbolic gestures but firm measures - from the US, Europe and the Group of Seven - in delivering protection systems and enforcing penalties," was stated in a social media post.
Officials stated that 450 drones and several dozen missiles attacked the country's power systems, characterizing such assaults as "cynical and calculated" and against "essential services" as temperatures become colder.
Energy officials said Russia was "launching a major assault" and technical staff were working to fix the damage.
A series of attacks struck energy infrastructure and apartment buildings in the capital.
Multiple people injured in the assaults on the capital have been transported for medical care, as confirmed by municipal representatives.
Regional authorities said the city came under significant strikes during nighttime hours. A minor was killed and multiple civilians were hurt.
The strikes come after nights of air raids in the territory, portions of which are occupied by Moscow's military.
The whole nation is in a state of readiness for advanced weapon attacks, which are tougher to spot.
Government officials told the media that Russia was intentionally trying to damage the electrical infrastructure, with strikes already affecting gas facilities.
Authorities confirmed utility staff and authorities were bracing for additional strikes.
