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Riehen district heating plant,


At Switzerland’s oldest geothermal power plant, deepwater at a temperature of 65°C is pumped from 1,547 m below ground level. The water is cooled down to a temperature of 25°C by heat pumps and the thermal energy fed into a district heating system. The spent water is then pumped directly back into the ground through a 1,247 m deep injection well.


Gruner Gruneko AG
St. Jakobs-Strasse 199
4020 Basel
T +41 61 367 95 95
F +41 61 367 95 85
Contact Person
Arthur P. Moser
T +41 61 367 94 89