The Celtic Interconnector
is a proposed 700 MW High Voltage electricity interconnector that will run from Brittany in France to east Cork in Ireland. The interconnector will be 575 km long, about 500 km submarine, and is expected to cost around €1 billion. At its full capacity it will be able to power 450,000 homes. The project is jointly proposed by EirGrid, Ireland’s Transmission System Operator (TSO), and its French counterpart, Réseau de Transport d’Électricité (RTÉ).