The submarine electricity interconnection through the Bay of Biscay
The new electricity link through the Bay of Biscay, with a length of almost 400 kilometres, will strengthen the interconnection between Spain and France by improving security and guarantee of supply, increasing the efficiency of both electricity systems and allowing a greater integration of renewable energies. This interconnection, designated as a Project of Common Interest (PCI) in 2013, poses a major challenge for France, Spain and Europe in the achievement of the goals set out regarding energy transition in Europe.
The new interconnection between the Gatika substation (near Bilbao, Spain) and the Cubnezais substation (in the French region of Aquitaine) consists of 4 cables, two per link. This underwater and underground direct current dual link will have a transmission capacity of 2x1,000 MW.
This new interconnection represents a new challenge for Red Eléctrica after having successfully completed and commissioned the Baixas-Santa Llogaia underground interconnection in the eastern Pyrenees.