Nexans to install HVDC cable system between mainland Greece and Crete


Nexans has been chosen to install a subsea high voltage direct current (HVDC) cable system link the electricity network on mainland Greece to Crete.

The subsea cable system will cover a distance of 335km from the Attica region on the Greek mainland to the Herakleion area in Crete.

The contract has been awarded by Ariadne Interconnection, which is owned IPTO, Greece’s state grid operator.

Under the contract, Nexans will design, manufacture and install a subsea HVDC cable system for the project that will provide security of supply for the Crete island.

With a population of around 700,000 people, Crete is the largest of the Greek islands.

The new submarine cable interconnection will enable Crete to have a reliable power supply essential for its future prosperity.

Currently, it depends mainly on out-dated fossil fuel generation.

Nexans will deliver a 500MW HVDC subsea cable system to form half of the total 1,000 MW bipole interconnection.

The project will be executed over a period of 35 months.

The HVDC cable will be installed by one of Nexans’ own dedicated cable vessels – Nexans Skagerrak or new Nexans Aurora.

The cable will be manufactured in the Nexans plant in Halden, Norway and/or the plant in Futtsu, Japan.

The company stated” “The Nexans cable, rated at 500,000 Volt, is based on its well-proven mass impregnated nondraining (MIND) design for HVDC cable systems and will integrate fiber optic elements for sensor applications.

“The near-shore sections of the cable, to be installed at water depths down to 100 meters, will feature an aluminium conductor core with a cross-section of 1,800 mm².

“The deeper sections of the cable, installed at depths down to 1,200 meters, will feature a 1,500 mm² crosssection aluminium conductor.”