The Emosson dam, built between 1969 and 1973, is at the heart of a major hydroelectric complex straddling Switzerland and France.
Two hydropower plants supply close to 3% of the electricity generated in Switzerland. Hydropower is a home-grown, storable, flexible, renewable and CO2-free form of energy.
With its 225 million m3 of water, Emosson Lake is the 2nd biggest artificial reservoir in Switzerland.
850 million kWh
Average annual production by the facility
225 billion litres
Volume of Emosson Lake dam
1967 - 1975
Construction of the facility
News
Publication - Annual Report 2025
Electricité d'Emosson SA has held its 71st Annual General Meeting on June 3, 2026. On this occasion, the shareholders have approved the financial…
Caution and vigilance around waterways!
The prevention linked to its facilities is a top priority for Electricité d'Emosson which implements a number of preventive measures during the summer…
Publication - Annual Report 2023
We are pleased to inform you that our Annual Report is now available under: Annual Report 2023
This report present our financial results, the key…
At the heart of the Emosson dam in Valais
Emosson zipline
Walking trails in Valais
Hydropower
Procurement
Hydropower is the mainstay of Switzerland’s electricity supply and provides more than half of the country’s power production. In France, it represents 12% of total production.
Hydropower
Procurement
Hydropower is the mainstay of Switzerland’s electricity supply and provides more than half of the country’s power production. In France, it represents 12% of total production.
Hydropower plants
Different types of power plant
Three types of hydropower plant are in use in Switzerland. Run-of-river power plants, storage power plants and pumped storage power plants.
