Since its commissioning in 1921, the Broc/Montsalvens facility has embodied innovation and continuous adaptation, with regular improvements aimed at optimising energy performance and environmental integration.
The Broc/Montsalvens hydroelectric plant produced its first kilowatt-hour on June 25, 1921, after three years of construction. The structure benefited from groundbreaking calculation methods for arch dams developed by Alfred Stucki, bringing to life a project initiated by Hans Maurer and Vicktor Ryncki, then director of the EEF.
Over the years, Broc/Montsalvens has constantly evolved: the addition of a fifth generation unit (1927), construction of a flood spillway tunnel on the right bank (1945), draining of the lake and reconstruction of the bottom outlet (1968), increased residual flow via a compensation turbine at the dam’s base, sediment transport remediation, and the creation of a bypass stream (2011–2021).
Further operations are planned in the coming years to continue maintaining and optimising the facility, ensuring the production of local and renewable energy.
Electrobroc
Centre information sur l'énergie
Energieinformationszentrum
Groupe E SA
Route du Lac 1
1636 Broc
+41 (0)84 040 40 30
