During the night, Russian missile and drone strikes have led to blackouts in large parts of Ukraine's capital, Kyiv.
A number of civilians were hurt while residents in eastern districts were left without electricity and faced problems to drinking water, according to municipal leaders.
Meanwhile, a minor was fatally injured in a different assault in the southeastern region in the southern area, according to area administrators.
Russian forces has escalated attacks on electrical systems over the past few days, while the country's government has demanded "concrete actions" from partner nations to exert influence on Moscow.
"What's needed is not superficial actions but strong steps - from the US, Europe and the Group of Seven - in delivering defensive weapons and enforcing penalties," he wrote in a online statement.
He said that 450 drones and over thirty projectiles targeted the country's power systems, labeling such strikes as "cynical and calculated" and against "everything that sustains normal life" as temperatures become colder.
Government representatives said Russia was "launching a major assault" and repair crews were working to repair systems.
A barrage of missiles hit power facilities and civilian homes in the capital.
Five out of the nine people wounded in the attacks on the city have been transported for medical care, as confirmed by local officials.
Regional authorities said the urban area endured significant strikes throughout the evening. A young boy was killed and several individuals were wounded.
The strikes succeed evenings of bombing campaigns in the territory, portions of which are currently controlled by Moscow's military.
The entire country is under warning for hypersonic Kinzhal missile strikes, which are harder to spot.
National leaders told the media that Moscow was intentionally trying to damage the country's energy grid, with attacks already disrupting gas facilities.
He said technical personnel and government agencies were preparing for more assaults.
