The GeoCogen Eclépens project is a unique combined geothermal energy development offering a large replication potential in Switzerland. At the heart of the Swiss Confederation's 2050 energy strategy, this project is located in Western Switzerland, north of the city of Lausanne, capital of the canton of Vaud. A deep well drilled in 1981 searching for hydrocarbons, discovered a geothermal anomaly with excellent potential to deliver heat production well beyond the technical threshold required for power generation and heat distribution from some 4’000 m depth below surface. Due to intense natural fracture density such production can be achieved without fracturing technology and hence, virtually without induced seismicity. ...