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OKThe heart of these plants is the Valle di Lei reservoir, with a capacity of 197 million cubic metres of water. The water is held back by an arch dam with a maximum height of 138 metres and a crown length of 635 metres. Virtually the entire reservoir – including the natural catchment area where around one third of the reservoir’s water originates – is located in Italy. Around two thirds of the water is fed from the Avers, Madris and Niemet valleys or pumped up from the Ferrera station.
Plant type: | Storage power plant |
Location: | Sils, Thusis, Bärenburg, Ferrera, Switzerland |
Number of turbines: | Ferrera: 3 Francis turbines / Bärenburg: 4 Francis turbines / Sils: 4 Francis turbines / Thusis: 2 Francis turbines |
Capacity: | 744 MW |
Shareholding: | 9.3 % |
Commissioning: | 1963 |
Average annual production: | 1,368 GWh |
Guided tours: | Yes |
Status: | In service |