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Energy · 10.11.2026 · 11:00

Corinth–Kos interconnector: cable contracts signed

The overall project has a €1.48 billion budget. Seabed surveys are the next step before installation.

A work vessel carrying a cable reel in open water
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On 9 November, Greek grid operator IPTO announced that it had signed contracts with Hellenic Cables for the subsea and underground cables of the Corinth–Kos interconnector. Seabed surveys come next. The signatures mark the start of implementation; the link is not yet in operation.

The €1.48 billion budget covers the overall project. The 320 kV high-voltage direct-current link will carry up to 1,000 megawatts. IPTO’s figure of around 1,290 kilometres refers to the total length of the cable system.

Kos is the first stage of the plan to link the Dodecanese to the mainland grid. Rhodes and Karpathos are due to gain direct high-voltage connections via Kos in a later stage. The expected reductions in reliance on local generation and in public service charges depend on the project being implemented; the announcement does not set an immediate change to tariffs.

Source: Independent Power Transmission Operator (IPTO) · ERT News

English translation of the Greek edition · Read in Greek

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