Tropic House Frutigen

Local nameTropenhaus
LocationFrutigen, Switzerland

The Tropenhaus in Frutigen, Switzerland, is a commercial project using geothermal energy from hot water flowing out of the Lötschberg base tunnel for the production of exotic fruit, sturgeon meat and caviar in a tropical greenhouse in the Swiss alps. In 2007, the project received the Prix Evenir, the Swiss petroleum industry's CHF 50,000 award for sustainable development.The idea for the greenhouse was born in 2002 when it became apparent that the water continuously flowing out of the Lötschberg Base Tunnel could not be directly diverted to the local river, the Kander, as its temperature of 20 °C would disrupt the biological rhythm of the endangered trout there. Rather than cooling the water artificially, wasting its thermal energy, tunnel engineers founded a start-up company to use the warm water to heat a greenhouse. Construction of the site, which started in May 2008 at a cost of CHF 28 million, was due to be completed at the end of 2009.

Tags Restaurant
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More information and contact


Official Website



Phone +41 33 672 11 44

Address Tropenhausweg 1, 3714 Frutigen, Switzerland

Coordinates 46°35'33.316" N 7°39'21.165" E

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