Nant de Drance Hydropower Plant
Dam in Saint-Maurice, Valais / From Wikipedia, the free encyclopedia
The Nant de Drance Hydropower Plant is a pumped-storage power station in the canton of Valais in Switzerland. It is within the municipality of Finhaut, district of Saint-Maurice and about 14 km (8.7 mi) southwest of Martigny. Construction on the power plant began in 2008 and it began operations in 2022.[1][2] It is owned by Nant de Drance SA, a consortium of Alpiq (39%), SBB (36%), Industrielle Werke Basel [de] (15%) and Forces Motrices Valaisannes [fr] (FMV) (10%). The US$1.9 billion plant has an installed capacity of 900 MW[1][3][4] and an energy storage capacity of 20 GWh.[2]
Quick Facts Country, Location ...
Nant de Drance | |
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Country | Switzerland |
Location | Finhaut, Saint-Maurice, Valais |
Coordinates | 46°03′49″N 06°54′36″E |
Status | Operational |
Construction began | September 2008 |
Opening date | July 2022 |
Construction cost | US$2.1 billion (CHF 1.9 billion, €1.5 billion) |
Owner(s) | Nant de Drance SA |
Upper reservoir | |
Creates | Lac du Vieux Emosson |
Total capacity | 25,000,000 m3 (20,000 acre⋅ft) |
Lower reservoir | |
Creates | Lac d'Emosson |
Total capacity | 227,000,000 m3 (184,000 acre⋅ft) |
Power Station | |
Hydraulic head | 295 m (968 ft) |
Pump-generators | 6 x 150 MW reversible Francis-type |
Installed capacity | 900 MW |
Annual generation | 2,500 GWh (est.) |
20 GWh energy storage |
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