List of high-voltage transmission links in Ireland

List of high-voltage transmission links in Ireland, including some under construction or proposed.

As of 2025, there are three operational interconnectors from both the Republic of Ireland and Northern Ireland to Great Britain, providing an interconnector capacity of 1,500 MW.

Name Developers Substation IE Substation 2 Length (km) Voltage (kV) Power (MW) Operational Remarks Moyle Interconnector Mutual Energy Ballycronan More Auchencrosh, South Ayrshire 63.5 250 500 2001 submarine HVDC East–West Interconnector EirGrid Interconnector Designated Activity Company Rush, County Dublin Shotton, Flintshire 261 ±200 500 2012 submarine HVDC Greenlink Element Power & Partners Group Great Island Pembroke 190 320 500 2025 submarine HVDC Celtic Interconnector EirGrid and RTE Knockraha La Martyre 575 ±320 700 2028 (under construction) submarine HVDC LirIC Transmission Investment Kilroot Hunterston 142 320 700 2032 (planned) 2 submarine HVDC cables MaresConnect MaresConnect Limited Dublin Bodelwyddan 190 750 2032 (planned) submarine HVDC

See also

Electricity sector in Ireland List of power stations in the Republic of Ireland List of high-voltage transmission links in the United Kingdom

References