The commissioning of the new 225 kV Rivière – Sanssac and Pratclaux – Trevas lines marked the completion of the “2 Loires” project launched in 2015.
Built in 1941, the 225 kV line between Le Puy-en-Velay, Yssingeaux area and Saint-Etienne served several urban and industrial centres in the Loire and Haute-Loire departments. It had reached its technical limits after 70 years, especially given the changes taking place in the region. The “2 Loires” project involved replacing the existing line with a new higher-capacity 225 kV double-circuit line and adjusting its route to reflect the region’s new needs.
To learn more, please see the report on this project in RTE’s magazine MAG RTE&Vous.