Western Corridor - HVAC - Interconnector | GR

Basic Information

Also known as:Western Corridor, West Corridor, 400 kV System Expansion toward Peloponnese, Corridor A' (400 kV to Peloponnese)

Status:Operational

Owners:

IPTO (ADMIE) / Independent Power Transmission Operator(100%)

Type:domestic reinforcement

Website:www.admie.gr

Description:

The Western Corridor (Peloponnese) Rio–Antirrio interconnection is a domestic 400 kV AC land–sea transmission link that integrates the Peloponnese into Greece’s ultra‑high‑voltage (400 kV) backbone. Implemented by the Hellenic Transmission System Operator (IPTO/ADMIE) as part of the wider “Western Corridor” (Megalopolis–Patras–Western Central Greece), the project was delivered as a turnkey...

Supply Chain (1)

Project Timeline (1)

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.

	Peloponnese	Western Central Greece
Landfall	Rio (Rio), Peloponnese coast, GR	Antirrio (Antirrion), Western/Central Greece coast, GR
Grid Connection	Rio 400 kV landing point / connection to the Peloponnese 400 kV system	Antirrio 400 kV landing point / connection to the Central Greece 400 kV system