Greenlink is a 190 km long 500 MW high-voltage direct current (HVDC) submarine power cable between County Wexford in Ireland and Pembrokeshire in Wales.

[5] The cable runs 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.

[6][1][7] The HVDC link is configured as a symmetrical monopole, with DC voltages of ±320 kV, and nominal power rating of 500 MW.

[8] 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.

[11] As of September 2022, work had started on the cable route from Great Island to Baginbun with completion of the project now expected in 2025.