Swiss energy company Alpiq is opening the doors of its Navizence hydropower project to the public to celebrate the completion of a four-year rehabilitation.
Built in 1908 as part of the Forces Motrices de la Gougra SA complex in the Val d’Anniviers valley, Chippis and its sister plants, Mottec and Vissoie, are all fed by the Moiry Dam.
Alpiq said the rehabilitation of Chippis included the replacement of seven Pelton units with three vertical units -- each of which is capable of generating 23.7 MW -- as well as associated hydromechanical and electrical equipment.
The modernization increases Chippis' output capacity from 50 MW to 70 MW, though the company said 20 MW will be held in reserve to "optimize power generation throughout the year".
Chippis will be open for tours Saturday, May 10.