Starting from 15:00 today, Kiev , Lviv , Odessa , Lutsk , Dnepropetrovsk , Nikolayev , Kharkov , Sume, Rovne, Krivorog and Moldova and Transnistrial , including Chisinau , all power was cut off.
In some areas of Ukraine, communications and the Internet have been interrupted on a large scale, which is also caused by emergency power outages.
Rovne nuclear power plant has entered emergency operation mode, of the nuclear power plant in southern Ukraine was partially stopped, and Khmelniksky nuclear power plant was also unable to supply power due to damage to the power system.

In Kyiv, missile triggered an apartment fire. But it was not caught in Russian missiles. Instead, the Ukrainian army launched one of the air defense missiles and flew towards the apartment building.

air defense missile debris found in the apartment building of Kiev

Russian missiles caught fire after hitting the Kremenchurg Hydropower Station.
Ukrainian Energy Group said that most parts of Ukraine will have no electricity within a day, some railways and commuter trains have been stopped, and interruptions to the Internet and communications are still continuing.
In some cities, water supply problems also occur, which are caused by the stoop operation of of the electric water pump.

It can be said that the cumulative effect of the crackdown on Ukrainian energy infrastructure has occurred since October 10 - several waves of strikes have caused the Ukrainian energy system to fail and everything has collapsed. At present, the energy system is barely able to balance by further reducing consumption, but it is difficult to do this in the long run.
Moreover, the Russian armed forces will further strike on the energy infrastructure that has not been destroyed, and the next wave of strikes may lead to power outages in most parts of Ukraine.

Kiev

Suddenly drop in Ukrainian network traffic