The PISCES Subsea Cable System is a major telecommunications infrastructure project designed to establish a direct, high-capacity digital connection between Ireland and continental Europe. Telecommunications operator Orange, infrastructure investor Equitix and Irish subsea cable developer MDM have formed a joint venture to develop and deliver the project. The initiative aims to strengthen Europe's digital connectivity, improve network resilience and support the growing demand for data transmission driven by cloud computing, artificial intelligence (AI) and data center expansion.

The proposed cable system will extend approximately 3,125 km and connect four key locations: Galway in Ireland, Saint-Hilaire-de-Riez in France, Sopelana in Spain and Carcavelos in Portugal. With 16 fibre pairs, the system is designed to provide substantial transmission capacity and open-access connectivity. Orange will develop a new cable landing station in Sopelana, Spain, to support the system. Once operational, the cable is expected to improve connectivity between Ireland's cloud and data center hubs and mainland European networks, creating additional opportunities for telecommunications operators, cloud service providers and other digital infrastructure businesses.