At 23:53 on December 17, the electrical generating station in the village of Petrivtsi in Kyiv region was completely de-energized, Ukrenergo reported on Facebook.
”As a result, 144.9 MW load capacity of PJSC Kyivenergo and 58 MW load capacity of PJSC Kyivoblenergo were de-energized. Also, Kyiv pump storage power plant was de-energized with the loss of power for its own needs,” the report says.
It is noted that the normal operation was restored one hour after the energy breach.
Hacking, as well as equipment failure (system crash), is considered as one of the possible causes of disruption.
Investigation into the causes of failure is underway.
”Before the end of the official investigation into the case, the managament of all Ukrenergo facilities which have automatic control systems was downgraded to a local level,” the company said.
In turn, Ukrenergo Acting CEO Vsevolod Kovalchuk wrote on Facebook that as a result of this failure, consumers of northern part of the right bank of Kyiv and surrounding areas of Kyiv region were left without electricity at midnight.
