The East West Interconnector (EWIC), connects the electricity transmission grids of Ireland and GB and is key national infrastructure. The EWIC facility provides energy for 300,000 homes, strengthens security of supply, and facilitates increased renewables operation to decarbonise the transmission systems. EirGrid owns and operates EWIC, managed in partnership with Hitachi ABB Power Grids. The EWIC asset is 260 km in length, 186 km of which is beneath the Irish Sea. The asset includes onshore Converter Stations in Ireland (Portan, County Meath) and Great Britain (Shotten, North Wales).