“On September 25, power supply to consumers in the Kaliningrad region was carried out exclusively by local power plants of the company Inter RAO - Electric Power Plants,” the company said in a statement.

It is noted that the regional power system was disconnected from the BRELL energy ring for 8 hours.

"During this time, the generation of electricity was equal to its consumption ... The tests were successful and confirmed the readiness of the power system of the Kaliningrad region to work in an isolated mode," the statement says.

Earlier, specialists from Rosseti Severny Kavkaz restored power supply in eight districts of Dagestan.