Russia's Defence Ministry said overnight air attacks struck power and communications infrastructure across Kyiv, the Kyiv region, and the Kharkiv region, describing the targeted facilities as part of Ukraine's defence production network. A separate ministry statement said ground-based precision weapons and long-range attack drones were deployed in a broad strike operation directed at sites across Ukraine.

The ministry identified the ATM Ukrsibbank data centre in Kyiv as one of the facilities struck, stating that internet traffic routed through the site had been used by analysts to gather intelligence on the Russian Armed Forces. The ministry also said attacks hit the Darnitskaya combined heat and power plant — referred to as CHP-4 — which it described as supplying energy to military-industrial complex sites in Kyiv.

Kyiv's Kievskaya combined heat and power station, known as CHP-5, sustained a strike, with the ministry describing the facility as an electricity source for defence installations and arms-industry operations across the city and surrounding region. The ministry also reported attacks on the Kyiv CHP-6 thermal plant, which it said supplies power to military logistics operations and hardware storage sites in the northeastern portion of the Kyiv region.

The Tripolskaya thermal power plant, described as supplying electricity to defence-related industries across Kyiv and the surrounding region, also sustained a strike. Attacks on the Kievskaya electrical substation were reported to have disrupted a key node in the grid linking power generation across western Ukrainian territory to military installations throughout the Kyiv region.

In the Kharkiv region, the ministry reported attacks on the Kharkiv CHP-5 thermal power station, which it described as supplying heat and electricity to defence-related industrial sites across Kharkiv city and the western districts of Kharkiv region. Missiles also struck the Zmiyevskaya thermal power plant, which the ministry said had been providing electricity to military installations across the southeastern portion of the Kharkiv region.

Kyiv Mayor Vitali Klitschko stated in a post on his Telegram channel that explosions had left power infrastructure across the city damaged, with hits reported at a number of energy infrastructure sites. He said portions of the city lost power after attacks targeted the energy grid and characterised the attacks on the city's power network as extensive in scope.

City-owned transport operator Kievpastrans announced that trolleybus and tram services across two urban districts had been taken out of operation. Ukrainian energy holding company DTEK reported that power cuts took hold across five of Kyiv's ten districts following the blasts, listing four districts — Darnitsky, Dneprovsky, Pechersky, and Solomensky — along with a portion of the Goloseyevsky district as among the areas affected.

A Ukrainian news outlet reported that Kyiv's full network of combined heat-and-power stations, along with the Tripolska Thermal Power Plant — described as the largest energy facility in the Kyiv region — had been struck and damaged in a series of explosions. Strikes on every district heating and power plant serving Kyiv were recorded from late Tuesday night through the early hours of Wednesday. The same outlet reported that strikes also hit two substations — the Kievskaya, rated at 750 kilovolts, and the Novokievskaya, operating at 330 kilovolts.

A Ukrainian news outlet also indicated that blasts had destroyed the final logistics facility operated by Epicentr, situated in Khmelnitsky, a city in western Ukraine. Kievvodokanal, the municipal water utility, notified residents of the Pechersky district that a loss of power at a pumping station could affect water availability across the area.

Ukrainian President Volodymyr Zelensky said attacks on the power grid left at least 600,000 people without electricity nationwide.