At the Nea Makri 150 kV substation, two new complete 150 kV overhead line bays on a single busbar, forming the connection with Polipotamos, together with one 150 kV bus-section switch were completed in 2014, finalising the substation works required for the 150 kV connection.
Independent Power Transmission Operator ADMIE scheduled the start of submarine cable installation for the Nea Makri–Polipotamos (Attica–Evia 2) interconnection on Thursday, 14 March, using the Norwegian cable-laying vessel C/S NEXANS SKAGERRAK to lay the power cables across the seabed between Evia and Nea Makri. The laying operation was planned to begin on that date and be completed within one week as part of the wider interconnection project whose total cost exceeds €80 million.
For the Nea Makri–Polipotamos interconnection (Attica–Evia 2), ADMIE completed installation of the submarine power cables between Evia and Nea Makri and the associated underground cables from the landfall point to the Nea Makri substation. Cable laying in the sea area was carried out by the Norwegian vessel C/S NEXANS SKAGERRAK starting on 14 March and was expected to be finished within a week, and later reports confirm that both the submarine and onshore cable sections had been fully laid, allowing the project to proceed to testing and energisation of the link.
For the Nea Makri–Polypotamos 150 kV AC submarine and underground cable interconnection linking South Evia to the Attica region (Attica–Evia 1), the contract signed in May 2010 specified that the project was scheduled to be completed within 36 months, implying full operational readiness around 2013 to enable the export of about 400 MW of wind power from South Evia into the mainland transmission grid and to reinforce the electrification of eastern Attica.
Public Power Corporation (PPC) signed a €64 million contract on 14 May 2010 with Nexans Norway AS for the design and construction of the 150 kV, 200 MVA submarine cable link between Polypotamos in South Evia and Nea Makri in Attica, providing capacity to transfer around 400 MW of wind-generated power from Evia to Attica and reinforcing the electrification of eastern Attica.
Licence: Approval of Environmental Terms (EIA) for the Polypotamos–Nea Makri 150 kV submarine cable
In September 2009, the Environmental Terms for the 150 kV submarine cable project connecting Polypotamos (South Evia) with Nea Makri (Attica)—the second Attica–Evia interconnection—were approved, allowing Public Power Corporation (PPC) to proceed with tendering for the cable construction.
Authority: Public Power Corporation (PPC) · Licence: Public consultation on tender documents for the Polypotamos–Nea Makri 150 kV submarine cable
After approval of the project’s Environmental Terms, PPC completed the tender documents for the 150 kV Polypotamos–Nea Makri submarine cable and made them available on its corporate website for public consultation prior to Board approval of the final tender documents.
The European Investment Bank signed a EUR 70 million loan contract, representing the second tranche of a EUR 140 million loan to support IPTO’s power transmission investment programme for 2012–2017, which includes the interconnection of Nea Makri (Attica mainland) to Polypotamos (island of Evia). This debt financing contributes to improving electricity transmission, integrating new generation resources, and reinforcing the network that includes the Attica–Evia interconnection scheme.
€70M (debt)
| Attica | Evia | |
|---|---|---|
| Landfall | Nea Makri, Attica | Polypotamos, Evia |
| Grid Connection | Nea Makri 150kV substation | Polypotamos 150kV substation |
Attica
Evia