Alpiq in: Europe



Staumauer Salanfe

The reservoir collects water from the Salanfe and Saufla basins. The waters of the Saufla reach the reservoir via the natural gradient of a 4 kilometer-long tunnel. The pressure line between the reservoir and the Miéville power stations situated 1,472 meters lower down has a gradient of up to 95 percent.


Kaplan Turbine Cotlan

The Cotlan small hydropower station that is located in the municipality of Rüti in the Swiss canton of Glarus was constructed in 1936 and renovated between 2015 and 2017.


Staumauer Hongrin

The Forces Motrices Hongrin-Léman (FMHL) Company was founded in 1963 with the purpose of creating a pumped storage hydroelectric facility. The main features of the project are the Hongrin dam and the two underground pumped storage power plants near Lake Geneva.



Before Cleuson-Dixence was built, approximately 2,200 hours were needed to empty the Grande Dixence dam, in other words, the turbines had to operate at full capacity 11 hours a day from October to April.


Wasserkraftwerk Gösgen

Built in 1917, the Gösgen power station has an annual output of around 300 GWh and is one of the largest run-of-river power plants on the river Aare. Between 1997 and 2000 the power station was completely rebuilt and now produces twelve percent more electricity with the same flow of water.



The Flumenthal power station was first put into service in 1970. Following measures to increase the efficiency to 27 MW, the average annual output of the three turbine-generator groups is 146 GWh of renewable hydroelectric power. This corresponds to an increase in electricity production of six percent.


Engadine storage power stations

The Livigno reservoir is a model of international cooperation in the interests of electricity generation, while the Ova-Spin power station with its compensating basin shows how water extracted from the River Inn can be converted into valuable stored energy.


KW Grüneta

The Grüneta small hydropower plant is located in the municipality of Müllheim in the canton of Thurgau and generates electricity for the equivalent of more than 300 households.


TWKW Striempel

The Striempel small hydropower station in the municipality of Langnau am Albis in the canton of Zurich generates electricity using the water that feeds the drinking water reservoir.


Drinking water power station in Trans (Canton GR), Switzerland

The village of Trans is located approximately 1400 metres above sea level in the Canton of Graubünden. In 2009, at the same time as the municipality's drinking water network was refurbished, the Trans drinking water power plant was constructed.


TWKW Tomils

The Tomils small hydropower station was constructed during the course of the renovation of the drinking water supply of the municipality of Tomils.


KW Mühle

The Mühle small hydropower station in the municipality of Weinfelden in the canton of Thurgau is powered by water from the River Thur and has been operational since 1950.


KW Model

The Model small hydropower station on the River Thur in Weinfelden in the canton of Thurgau generates 2,510,000 kWh of electricity per year.


KW Hagerhüsli

With an output of 500 kW, the Hagerhüsli small hydropower station generates sufficient electricity to supply more than 600 households in the canton of Berne.


KW Bätterkinden

The Bätterkinden small hydropower station in the canton of Berne was constructed in the centre of the village of Bätterkinden in 1984 and completely refurbished in 2001.


KW Buchholz

In 1892, in order to drive his mill with hydropower, Victor Eberle constructed a 15 meter high concrete dam in the bed of the River Glatt on the border between the municipalities of Gossau and Flawil (canton of St. Gallen).

Büttenen 1 & 2

KW Büttenen 1 & 2

The run-of-river power stations Büttenen 1 & 2, which are located in the municipality of Grellingen (canton Basel-Land) generate electricity for the equivalent of 1,200 households.


KW Moos

The hydroelectric power station Moos, constructed in 1945 and refurbished in 1998, generates electricity that covers the consumption of more than 1,300 households.


KW Walzmühle (SIGG)

The Walzmühle (SIGG) run-of-river power station is powered by the River Murg and has been in service since 1960.


Murkart small hydroelectric power plant

The Murkart run-of-river power station, which is located on the River Murg upstream from the town of Frauenfeld, was totally renovated in 2008 following a fire.

Mühle Matzingen

KW Mühle Matzingen

Already during the 1950s, water from the River Murg provided the energy to drive the mills in Matzingen.


KW Eisenhammer

The Isenhammer (also known as Eisenhammer) small hydropower station is located near the village of Flawil in the canton of St. Gallen.



The Tambobach small hydropower station is located on the River Tambo in the municipality of Splügen in the canton of Graubünden. It was put into operation in August 2012 after a construction period of only eight months. The installed capacity is 1.8 MW.


Drinking water power station in Riein (Canton GR), Switzerland

The Alpiq subsidiary Alpiq EcoPower constructed a drinking water power station on an alp above the village of Riein (canton of Graubünden).

Brugg- & Sittermühle

KW Bruggmühle & Sittermühle

Located in the municipality of Bischofszell in the canton of Thurgau, the two small hydropower stations Bruggmühle and Sittermühle have been generating electricity from renewable energy sources since 1930.


KW Widen

The Widen small hydropower plant was constructed in 1989 and is located in the municipality of Weinfelden in the canton of Thurgau.

Le Bayet

Le Bayet Kleinwasserkraftwerk

The Le Bayet small hydroelectric power station, which Alpiq acquired in 2008, is located in the French Alps near Albertville. It is the first small hydroelectric power station acquired by the Alpiq Group in France. The generated electricity is equivalent to the average annual requirement for around 3400 households.


Narzole Kleinwasserkraftwerk

The Narzole (CN) small hydroelectric power station is situated in the Piemont Region (Italy) and is being operationally managed by Alpiq Hydro Italia S.r.l., a company of the Alpiq group. The power station is operating since 2004 and uses the hydro energy from the Sarmassa canal.


KW Seon

The small hydropower station in the municipality of Seon in the canton of Aargau is located on the River Aabach between Lake Hallwil and the River Aare.

Riva Valdobbia (Vercelli)

Riva Valdobbia small hydro power station

The small hydroelectric power station in Italy's Piedmont region has been harnessing the power of the Vogna torrent since the spring of 2009. Electricity is generated fully in keeping with the principle of sustainable management of the costly resource of water. By investing in renewable energy, Alpiq is helping to protect the climate.


Wehr Winznau

At the end of 2003 the old turbine generator group was replaced with a new machine at the cost of around CHF 1.2 million. The small hydro power station now generates some 60 % more electricity than the old weir turbine. The volume of electricity produced meets the needs of around 480 households in the region.


KW Freienstein

The former spinning mill in Freienstein (canton Zurich) was constructed in 1836. When it was closed in the 1990s, the two existing turbines were decommissioned.


Small power plants on the Birs

The Nenzlingen hydroelectric power station derives its name from the municipality in the canton of Basel-Land in which it is located.


Zervreila storage power stations

Waters from various valleys are collected in the Zervreila reservoir above Vals near the Rheinwaldhorn, and used to generate electricity in three stages and in three stations. The annual production volume is sufficient to supply some 110,000 households with electricity.


Staumauer Serra

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.   


Ryburg-Schwörstadt run-of-river power station

The low-pressure run-of-river power station is located on the River Rhine below Stein-Säckingen. The four Kaplan turbines, each with a capacity of 30 MW, represented a pioneering achievement when first commissioned back in 1931. Switzerland's share of this border power station is 50 percent.



Equipped with two propellor turbines, the power station has a capacity of 23 MW and generates some 115 GWh per year. The 5.9 meter Kaplan turbines are among the largest waterwheels in Switzerland.


Massa storage power station

The Gebidem dam is fed by Aletsch glacier water, which is very rich in sediment. The 55 m3/s turbined by the Bitsch power station contain between 10 and 13 kg of sand, or an average of almost 40 tons per hour.


Maggia storage power station

The Maggia power stations harness the power of water from the Maggia and Brenno basins, using the drop between the Gries reservoir and the lake of Langensee. The gross height of approximately 2200 meters is the highest gradient used in Switzerland by a chain of high-capacity storage power stations.


Stausee Valle di Lei

The heart of these plants is the Valle di Lei reservoir, with capacity for 197 million cubic meters of water. The water is dammed by an arch dam at a maximum height of 138 meters and a crown length of 635 meters.

Grande Dixence

Grande Dixence storage lake

The Grande Dixence facility collects the runoff from 35 glaciers in the canton of Valais. The jewel in the facility's crown is the Grande-Dixence dam, the highest gravity dam in the world. The water from the reservoir plummets down to the Fionnay and Nendaz power stations.


Kraftwerk Martigny-Bourg

The Martigny-Bourg power station was put into operation in 1908 and utilises the water on the Swiss side of the Grand Saint-Bernard mountain pass. Between 2009 and 2013, Forces Motrices de Martigny-Bourg SA overhauled the power station, increased the output of the turbines and improved the efficiency.


Gougra storage power station

The Gougra power station harnesses the power of water from Val d’Anniviers and the Turtmann Valley thanks primarily to the Moiry dam, built in 1954 above Grimentz. The dam is 148 meters high and 610 meters long. The water is fed from the reservoir to the power stations in Mottec, Vissoie and Chippis (Navizence).


Staumauer Emosson

Situated at an altitude of 1930 meters, the Emosson reservoir is partly fed by the waters of the Mont Blanc massif. Energy is generated in the Vallorcine and Martigny-La Bâtiaz stations located around 1,400 meters lower down. The water stored in the reservoir is sufficient to generate electricity to illuminate a city of 250,000 residents.


Chandoline power station

The power station was put into operation in 1934. Its turbines are powered by water from the reservoirs created by the Dixence and Cleuson dams. On grounds of energy efficiency and production optimisation the Chandoline power station was taken out of service in July 2013 until further notice.


Blenio storage power station

The Blenio storage power station went into operation between 1959 and 1963. The Luzzone, Olivone and Biasca stations belong to this power plant. All facilities are remotely controlled and monitored from the command centre in Locarno. The concession runs until 2042.

Alagna (Vercelli)

Alagna small hydro power station

The clear waters of the River Sesia in the Italian region of Piedmont are revered among anglers as the cradle of fly fishing. In the winter sports resort of Alagna, nor far from the source, the small hydroelectric power station generates environmentally friendly natural electricity.