Subsea power cable to be constructed in Greece

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Greek power grid operator ADMIE is launching the implementation of a €1.48 billion high-voltage power transmission project linking the island of Kos to Corinth on the Greek mainland.

Sea-news.az quotes official ADMIE data stating that the operator has signed a contract with Hellenic Cables for the design, production, and installation of subsea and underground power cables.

The signing of the agreement marks the formal commencement of project operations. Comprehensive seabed surveys required for cable laying are scheduled to begin in the near future.

The project involves establishing a High-Voltage Direct Current (HVDC) transmission link with a 320 kV capacity and a rating of 1,000 MW. The total length of the cable system will reach approximately 1,290 km, comprising 1,260 km of subsea lines and 30 km of underground routes.

Interconnecting Corinth and Kos serves as the initial phase in integrating the Dodecanese archipelago into mainland Greece’s unified power grid. Future phases envisage connecting the islands of Rhodes and Karpathos, as well as smaller regional islands, to the high-voltage grid.

The project is partially funded through a loan provided by the European Investment Bank. Furthermore, it has received positive evaluations for grant allocations under the Island Decarbonization Fund and the Just Transition Mechanism.

Greece’s Minister of Environment and Energy, Stavros Papastavrou, described the project as a critical milestone toward eliminating the energy isolation of the Dodecanese Islands.

“This represents a €1.5 billion investment and the first decisive step toward connecting the Dodecanese to the mainland power grid. Kos, followed by Rhodes, Karpathos, and smaller regional islands, will secure a more reliable, environmentally clean, and affordable electricity supply, significantly mitigating reliance on expensive oil-fired power plants,” the minister stated.

According to Papastavrou, the initiative will also reinforce energy reliability, bolster local economies and tourism, and reduce electricity costs for end consumers.

According to Hellenic Cables, construction work is slated for completion by 2030.