Portugal-Spain Interconnection (PCI 2.17 on EC’s 2021 PCI list (5th list); TYNDP 2022 Project 4)
This project will increase the interconnection capacity between Portugal and Spain, pursuant to the objectives defined in the scope of MIBEL. Higher and more variable energy flows are expected between the two countries due to the increase in installed capacity based on variable sources, as well as market exchanges.
The project is part of the new 400 kV interconnection axis in the North between Minho and Galicia. It will connect the Beariz and Fontefría substations, in Spain, and the Porto area, passing through the Ponte de Lima and Vila Nova de Famalicão substations in Portugal. Of this axis, the section between the Porto area and the area of the future Ponte de Lima substation, passing through the Vila Nova de Famalicão substation, is already in operation.
The implementation of this cross-border project will enable a minimum commercial interconnection capacity between Portugal and Spain of 3000-3200 MW. According to the studies carried out under TYNDP 2016, as a result of the resulting increase in interconnection capacity between Portugal and Spain, this project provides, on the 2030 horizon, a reduction in variable generation costs from 0-20 M€/year to 60-80 M€/year, depending on the scenario, also taking into account the expected increase in interconnection capacity between France and Spain for that time horizon.
Simultaneously, this project will also allow, in the 2030 horizon, to avoid a loss of production from renewable sources in the order of 0-20 GWh to 290-570 GWh, depending on the scenario.
This project is especially relevant for the implementation of the EU’ energy policy targets, namely:
Voltage level: 400 kV
Line extension: 72 km (PT: Ponte de Lima – border section) + 18 km (ES: border – Fontefría section)