Transmission System Operation & Control Department

We inform you that after the justified requests of the producers MYTILINEOS S.A., HERON S.A. and PPC S.A., the Units Maintenance Schedule 2022 is updated. The updated (version 5) Units Maintenance Schedule is here.

We inform you that the updated (version 4) Annual Interconnections Maintenance Schedule for 2021 has been published here.

We inform you that after the justified request of producer PPC SA, the maintenance of GT2 of Thermal Unit Megalopoli No5, is rescheduled for the period 22/03/2021 until 04/04/2021. The updated Unit Maintenance Schedule is here.

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.

Please be informed that in the context of the 2 year Production Units Maintenance plan, in compliance with Article 3.11 of the System Operation Code, the Unit Maintenance Schedules for the next two (2) Calendar Years have been published:

We inform you that today Wednesday 14/10/2020 there will be a temporary shutdown of the Market Management System (MMS) & Authentication System from 15:00 to 18:00 due to necessary maintenance and upgrade works. The Balancing Market Management System (BMMS) will also be affected from the aforementioned maintenance works and will be unavailable at the same period of time.