Western Corridor
OperationalDomestic ReinforcementGR400 kV60 km
Basic information
5 fieldsAlso Known As
Western Corridor · West Corridor · 400 kV System Expansion toward Peloponnese · Corridor A' (400 kV to Peloponnese)
Status
operational
Owners
Type
domestic reinforcement
Website
Supply Chain (1)
Project Timeline (4)
1 Jan 2020Onss Commissioned
In 2019, ADMIE completed the installation of a new compensation reactor at the 400 kV Acheloos substation (KYT Acheloos) as part of the Western Corridor reinforcement works, enhancing the onshore high-voltage substation infrastructure required for the interconnection project.
1 Jan 2018Onshore Construction Start
Construction of the Western Corridor interconnection project, developed by ADMIE, began in 2018. The project, with an initial budget of €110 million, involves extending the transmission system in western Greece, including new infrastructure along the Western Corridor in the Peloponnese.
1 Jan 2014Planning Consent Awarded
Authority: Greek Ministry of Environment and Energy · Licence: Environmental Terms Approval Decision (AEPO) granting consent for the Western Corridor 400 kV route
The routing of the Western Corridor 400 kV transmission extension implemented by ADMIE was licensed by the Greek Ministry of Environment and Energy (YPEN) in 2014, based on the issuance of an Environmental Terms Approval Decision (AEPO), providing project-level consent for the authorised route.
Date TBDCommercial Operations Full Power
Greek transmission system operator IPTO (ADMIE) has put the Western Corridor, a 400 kV Extra High Voltage transmission link connecting Megalopoli with Patras and Western Central Greece via an 18 km dual-circuit submarine interconnection between Rio and Antirio, into full operation, marking the first-time interconnection of the Peloponnese to the 400 kV system. The project strengthens the existing Crete–Laconia interconnection, alleviates congestion on previously 150 kV-only regional networks, enhances the security of electricity supply in the Peloponnese, and enables local thermal power plants to operate up to their maximum capacity, with Hellenic Cables responsible for the design, manufacturing, installation, protection, and connection of the submarine and land cables.