Simplon storage power stations

The company operates three power stations in Gondo, Gabi and Tannuwald, which harness the power of water from the Simplon massif to generate electricity. The Gabi and Tannuwald stations are remotely controlled from Gondo. Two thirds of the annual electricity production volume is generated in summer.

Tannuwald power plant - alt. 1400 m
7 Francis turbines
Total capacity: 5.2 MW
Gross head: 363 m

Gabi power plant - alt. 1300 m
2 Pelton turbines + 1 Francis turbine
Total capacity: 11 MW
Gross head: 295 m

Gondo power plant - alt. 800 m
3 Pelton turbines
Total capacity: 45.4 MW
Gross head: 470 m

Fah dam - alt. 1758 m
Built: 1979
Commissioned: 1981
Type: gravity dam
Height: 9 m
Crest: 48 m
Reservoir capacity: 41 000 m3
Catchment area: 17.3 km2

Eggen reservoir - alt. 1596 m
Built: 1957
Commissioned: 1958
Type: embankment dam
Reservoir capacity: 50 300 m3
Catchment area: 57 km2

Sera dam - alt. 1278 m
Built: 1951, reconstruction in 2010 
Commissioned: 1952
Type: arch dam
Height: 22 m
Crest: 81.5 m
Reservoir capacity: 180 000 m3
Catchment area: 143 km2