Grande Dixence

Shareholders

EOS 60%
BKW 13 1/3 %
IWB 13 1/3 %
NOK 13 1/3 %

Production

Part of production reverting
to EOS: 60%
Part of production reverting
to BKW: 13 1/3%
Part of production reverting
to IWB: 13 1/3%
Part of production reverting
to NOK: 13 1/3%
Average annual production:
2 billion kWh
Connection to grids 220 and 380 kV

Pumping stations

Arolla – 17,300 m3
Power 48.6 MW,
max. output 12.6 m3/s

Ferpècle – 109,000 m3
Power 21.3 MW,
max. output 8.4 m3/s

Stafel – 90,000 m3
Power 26.4 MW,
max. output 9.9 m3/s

Z'Mutt – 840,000 m3
Power 86.5 MW,
max. output 17.4 m3/s

Fionnay power station - alt. 1490 m

2 x 6 Pelton turbines 
Total power: 290 MW (360 MVA)
Height of fall: 874 m

Nendaz power station - alt. 478 m

2 x 6 Pelton turbines 
Total power: 390 MW (480 MVA)
Height of fall: 1,008 m

The activities of Grande Dixence S.A. are closely linked to the operation of the Cleuson-Dixence complex and the Chandoline power station.

Grande Dixence dam

alt. 2365 m

Construction: 1950 - 1964
Commissioned: 1961 -1965
Type: gravity dam
Height: 284 m
Crown: 700 m
Retention capacity: 385 mill. m3
Surface area: 4.04 km2

Ferpècle dam

alt. 1896 m

Construction: 1962
Commissioned: 1964
Type: arch dam
Height: 25,5 m
Crown: 91 m
Retention capacity: 109,000 m3
Surface area: 1.1 ha

Z’Mutt dam

alt. 1972 m

 
Construction: 1962
Commissioned: 1964
Type: arch dam
Height: 74 m
Crown: 144 m
Retention capacity: 840,000 m3
Surface area: 4 ha