Positive
Project advancing - milestone achieved
High Impact
Major milestone or critical setback
On 17 April 2025 Greenlink was energised and began transferring electricity between Great Britain and Ireland. The 504 MW, 320 kV HVDC interconnector linked National Grid’s Pembroke substation (Wales) and EirGrid’s Great Island substation (County Wexford), with converter stations at each end converting DC to AC for export/import. National Grid, EirGrid and Greenlink Interconnector Limited coordinated the connections and testing prior to live transfers; the asset entered service to boost cross‑border security of supply and enable sharing of renewable generation between the two systems.