Greenlink

Greenlink is a high-voltage direct current (HVDC) submarine power cable under construction between County Wexford in Ireland and Pembrokeshire in Wales.

Greenlink Interconnector[1]
County Wexford, Ireland and Pembrokeshire, Wales
Location
CountryIreland, United Kingdom
General directioneast-west
FromIreland
Passes throughSt George's Channel
ToWales
Construction information
Expected2024
Technical information
TypeSubmarine cable
Type of currentHVDC
Power rating500 MW
AC voltage400 kV (UK); 220 kV (Ireland)
DC voltage320 kV

Project status

In January 2022, work on converter stations started.[2] Offshore construction was scheduled for 2022-23. Trial operation and commissioning is planned for 2024.[3]

Route

The cable is proposed to run between EirGrid's Great Island substation in County Wexford, and National Grid's Pembroke substation in Pembrokeshire, with the cable making landfall at Baginbun Beach near Fethard-on-Sea in Ireland and at Freshwater West beach near Castlemartin in Wales. The total length would be 200 km (120 miles), of which 160 km (100 miles) would be under the sea.[4][1][5]

Specification

The HVDC link is to be configured as a symmetrical monopole, with DC voltages of ±320 kV, and nominal power rating of 500 MW. The project is expected to cost €400 million.[1]

Project history

Subsea surveys were undertaken in 2018, and public consultations in 2019.[4]

In April 2020, the company submitted three planning applications for onshore construction in Wales.[6] The project still required planning permission and marine licences in both the United Kingdom and in Ireland, but the process of procuring construction contracts had started.[7][4]

In March 2021, the project was granted a licence to install the sea cable in UK waters, with a similar licence for Irish waters still pending. As of March 2021, commissioning of the interconnector is planned for the end of 2023.[8]

In January 2022, construction work on converter stations started.[2]

See also

References
  1. "Greenlink Interconnector". 4Coffshore. Retrieved 24 October 2019.
  2. "Construction begins on converter station for €400m Greenlink Interconnector". 2022-02-02. Retrieved 2022-03-19.
  3. "TEN-E Regulation Information Brochure Issue 3" (PDF). Greenlink. June 2019. Retrieved 11 November 2019.
  4. Connolly, Philip (17 March 2019). "Element Power's Greenlink interconnector energises Partners Group". The Sunday Times. London. Retrieved 24 October 2019.
  5. Russell, Tom (2021-03-03). "Greenlink gets the greenlight from Natural Resources Wales". coffshore.com. Retrieved 2021-03-04.
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