Paros - Naxos 2004
Island LinkOperationalGR140 MW150 kV10.8 km2022
Also known as:Paros–Naxos 150 kV, Cyclades Interconnection Phase B Paros–Naxos, Διασύνδεση Πάρου–Νάξου, Υποβρύχιο καλώδιο Πάρος–Νάξος 150 kV, Έργο Β’ Φάσης Διασύνδεσης Κυκλάδων Πάρος–Νάξος
Status:Operational
Capacity:140 MW
Project Company:ADMIE (IPTO)
Type:island link
Website:www.admie.gr
Paros–Naxos (Cyclades Project – Phase B) is a high‑voltage HVAC submarine interconnector implemented as part of the Cyclades islands interconnection programme in the Aegean Sea. The link comprises a single 150 kV three‑phase XLPE insulated subsea cable connecting Paros and Naxos with an approximate subsea route of about 7–7.6 km....
Supply Chain (2)
Project Timeline (6)
2022Commercial Operations Full PowerStale
Phase B/Step II of the Cyclades interconnection, which includes the 7.6 km, 150 kV three‑phase AC XLPE‑insulated submarine cable between Paros and Naxos (nominal capacity 140 MVA) and the 40 km Naxos–Mykonos link, is described as being estimated for completion by 2022, at which point this infrastructure is expected to enter operation and allow decommissioning of older local generating units on the islands.
13 Oct 2020Onss Commissioned
IPTO commissioned and inaugurated the new 150 kV gas-insulated onshore substation (GIS) on Naxos on 13 October 2020, formally connecting the island to the Hellenic High Voltage Transmission System via Paros and Mykonos and completing Phase B of the Cyclades Interconnection. The substation and associated loop between Paros, Naxos and Mykonos provide double supply to these islands, enhancing security of electricity supply for Naxos and the Small Cyclades.
Sept 2020Cable Installation Complete
In 2020 the 150 kV submarine cable interconnection between Paros and Naxos, including underground sections at each end and forming part of the Cyclades Interconnection Phase B, was fully installed and the project was completed, enabling the integration of Naxos into the Greek high-voltage transmission system. The link consists of a three-core 150 kV AC submarine cable with a nominal capacity of 140 MVA and associated works at the Paros and Naxos substations.
21 Nov 2014Capital Support Awarded
Licence: EU state aid approval (SA.35695) for public funding of the Cyclades islands interconnection with the National Mainland Interconnected Transmission System, including the Paros–Naxos 150 kV link
On 21 November 2014, the European Commission approved state aid measure SA.35695 for the Greek TSO ADMIE to finance the Cyclades interconnection system linking the autonomous power systems of Syros, Paros, Naxos and Mykonos to the mainland grid, a project with total investment costs of about EUR 400 million whose Phase B includes the 150 kV, 140 MVA submarine cable connection between Paros and Naxos and from Naxos to Mykonos.
2013Financial Other
In 2013, the Hellenic Independent Power Transmission Operator (HIPTO) completed a socio-economic and financial analysis of the Cyclades interconnection project, which encompasses the Paros–Naxos 150 kV submarine link, estimating a total project cost of €400.17 million with Phase A accounting for €250.13 million and annual operating costs of €1.3 million. The study calculated a net present value of €341–371 million and an internal rate of return of 17.87% over 2017–2038, concluding that the interconnection scheme is a profitable solution for a future integrated, secure and sustainable power system in the area.
€400.17M
11 Feb 2011Capital Support Awarded
On 11 February 2011, a Greek ministerial decision (FA/E 3.2/57/3) formally listed the "Interconnection of Cyclades islands with the National Mainland Interconnected Transmission System"—which includes Phase B works such as the 150 kV submarine cable link between Paros and Naxos and associated substation infrastructure—as a key electricity project to be financed from state resources. The decision specifies that the project is funded by EU structural funds with co-financing from the national budget via the National Strategic Reference Framework (NSRF), thereby granting capital support to ADMIE for the Cyclades interconnection, including the Paros–Naxos 150 kV HVAC cable segment.