IPTO announces that today, January 8, 2021, Greek time 15:05 (14:05 CET), a disturbance occurred in the System of South Eastern Europe (SEE), out of the Greek System. The consequence of this incident was the separation of the interconnected Transmission Systems of SEE from the Continental Europe Synchronous Area. The frequency value in Central Europe contained around 49.7 Hz while in Southeastern Europe approximately at 50.3 Hz.
IPTO in cooperation with the neighboring TSOs took the appropriate remedial actions and achieved the restoration of the parallel operation between the two separated parts of the European System within one hour (Greek time 16:05 or 15:05 CET).
The consequences of the incident on the Greek System led to changes on Cross Border flows and production. The causes of the incident are being investigated while the operation of the Greek System remains in safe operation.