Maintenance

Due to maintenance works on the OHL 400kV HVSS THESSALONIKI (853, 873) – HVSS AG.DIMITRIOS (833, 823), from Saturday 23/05/2026 to Sunday 24/05/2026 (daily outage from 07:00 to 19:00 EET), constraints may be imposed on the neighbouring Thermal Units production.

Due to works on the OHL 400KV HVSS MEGALOPOLI(823,843) – HVSS ACHELOOS (863) – HVSS DISTOMO (833), from Monday 25/05/2026 to Wednesday 03/06/2026 (continuous outage), constraints may be imposed on the neighboring Thermal Units production.

Due to maintenance works in the OHL 400KV HVSS Pallini(813,833) – HVSS Lavrio (813,803), from Monday 04/05/2026 to Tuesday 30/06/2023 (daily outage from 08:00 to 16:00 EET), constraints may be imposed on the neighbouring Thermal Units production.

We inform you that the Annual Interconnections Maintenance Schedule for 2026 has been published here.

We inform you that the updated (version 2) Annual Interconnections Maintenance Schedule for 2025 has been published here.

Following information from the Italian TSO (TERNA), we inform you that the outage of the Greece-Italy DC-link, which occurred on Friday 12/08, at 14:51, due to a fault on TERNA’s side, is expected to last until Friday August 19, 2022 according to TERNA’s estimates. Therefore, until the restoration of the DC-link, the NTC of the Greece-Italy interconnection is set to zero in both directions.