KALININGRAD, August 9 (Itar-Tass) - The blackout in Kaliningrad Region on Thursday night was tentatively caused by a direct hit at a high-voltage power transmission line (PTL) by lightning in the area of the city of Sovetsk in the region's east, a source at the Yantarenergo Company has told Itar-Tass.
The source said two PTLs underwent a power cut at 21:00, local time. Ten minutes later they were re-energized. However, the automatic circuit-breaker at the Kaliningrad central heating and power plant TETS-2 went into play and the plant discontinued generating electric power, cutting supply of electricity to the western part of Kaliningrad Region, including the city of Kaliningrad. Thirty-six load substations were deenergized, leaving 645,000 people without electricity.
It took Yantarenergo specialists 90 minutes to activated the regions's power system through a reserve circuit. Electricity was supplied to the region from Lithuania during the repair period, the power company source said.
An official at the Russian Ministry for Emergencies said that at 23:00, Moscow time, "emergency repair work in Kaliningrad Region was completed and the supply of power via the standard circuit was restored".
Governor Nikolai Tsukanov told Itar-Tass earlier, "All social institutions were promptly connected up to reserve sources of power, which made it possible to rule out undesirable consequences".