On 12 May 2016, following a request from Swissgrid, the Swiss Federal Administrative Court (FAC) lifted the suspensive effect applying to construction of the connection of the Chandoline substation to the 220 kV overhead line between Chamoson and Chippis. The purpose of these works is to connect the Chandoline substation to the electric power transport network as soon as possible in order to ensure supply to the pumped power facilities operated by Grande Dixence SA in Arolla and Ferpècle.
Grande Dixence SA and Swissgrid SA have decided to build a new 220 kV substation at Chandoline. This new substation will include two 220/125 kV transformers that will have to be connected to the future very high voltage Chamoson-Chippis line. This explains the need for this new 220 kV connection, which was included in the procedure for the approval of the plans of the future overhead line connecting Chamoson with Chippis. As a reminder, the procedure for approval of the future Chamoson-Chippis overhead line is the subject of an appeal pending before the FAC, an appeal which carries a suspensive effect. The decision of the FAC to lift the suspensive effect for the connection of Chandoline will make it possible to begin the necessary works quickly and, during the initial stage, to connect the new Chandoline substation provisionally to the existing 220 kV line.
This FAC decision is liable to appeal within 30 days.