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Crete–Peloponnese subsea interconnector completed in Greece [free access]

April 6, 2021

The submarine interconnection link between the island of Crete and the Peloponnese peninsula, mainland Greece, has been completed, with the system expected to go live over the next few months. The project has been developed by the Greek Independent Power Transmission Operator (IPTO), Anexartitos Diacheiristis MetaforasIlektrikis Energeias (ADMIE).


The milestone was announced last week by Italian cable provider Prysmian, which was selected to design and install a 135 km high voltage alternate current (HVAC) cable system for the project. Prysmian’s 150 kV three-core cables were installed at a depth of up to 1,000 metres.


The project is associated with Phase I of the Crete–Mainland interconnection project. This phase entails the construction of nearly two 135-km, 150 kV alternating current (AC) undersea cable (USC) between landing points in South East (SE) Peloponnese (near Neapoli) and west Crete. In addition, a new 150 kV double-circuit underground cable (UGC) is to be constructed from the landing point in west Crete to the substation in the Chania area. On the mainland, a 10-km UGC is to be laid from the seashore next to Neapoli to the new transition terminal station of the SE Peloponnese substation, along with a 27.5-km overhead line (OHL) from the said transition terminal station to the Molai substation. Additionally, the project involves the installation of a static synchronous compensator (STATCOM) system in Crete, required for the necessary voltage regulation.


The EUR365 million interconnection project is being co-financed by the Greek Government and the European Union (EU), while European Investment Bank (EIB) has also provided funding for the same.