Rivne region: attacks on the substation "Grabiv" and "Kostopol" - burning of a power transformer and hacking of a 110 kW line.
During the evening of November 10 and the night of November 11, 2026, jet drones hit two power facilities in the Rivne region, immediately affecting the main distribution and distribution level of the network.
Grabov: Fire of a power transformer in a 330 kV substation - 11/10/2026, 21:00.
50.7122222, 26.1133333.
A jet UAV hit the territory of the Garbov 330 kV substation in the Rivne area. As a result of the impact, a power transformer caught fire, transformer oil escaped, and then a fire inside the technological site over an area of about 100 square meters.
The substation "Grabov" belongs to the main network and is connected to the energy center of Rivne on the 330 kilowatt line "Grabov - Rivne". The existence of this direction and of the 330 kV class substation itself is directly documented in the investment plans of NPC Ukrenergo, where the reconstruction of the line and the technical re-equipment of the substation were carried out separately. In this case, it is no longer the switching device or the auxiliary structure that is affected, but the power element of the transformation.
For such equipment, after a fire, the tank, inputs, windings, on-load tap changers, cooling system, oil pipes and the condition of the internal insulation are checked. Even if the geometry of the housing is maintained, thermal effects and oil loss prevent the unit from functioning properly until restoration. Thus, the attack on Grabov directly reduced the available transformer capacity of one of the nodes of the 330 kV network.
Kostopil: 110 kV line is physically broken - 11/11/2026, 02:47.
50.8934277, 26.4325083.
A few hours later, a jet UAV hit the Kostopol 110 kV substation. As a result of the impact, the 110 kV Rivne-Kostopol overhead line with a branch to the 110 kV Lyvomirka substation was physically disconnected. After the loss of the power supply, Ubomirka was completely without energy; At the time of the accident, its load was about 1 MW.