The Majorca - Ibiza submarine electricity interconnection is one of the most important investments made by Red Eléctrica from the point of view of security of supply and the structuring of the territory as it connects the two existing electricity sub-systems in the Balearic Islands and connects them to the Iberian and the Europe electricity market. This new link strengthens the electricity interconnection process between the Spanish peninsula and the Balearic Islands, which began with the Rómulo project.