Denmark celebrating 30 years of geothermalDistrict Heating plant, Thisted, Denmark (source: Geotermie.dk)Alexander Richter 21 Sep 2014Denmark celebrates 30 years of geothermal heating. On September 19, 1984, the geothermal district heating plant in Thisted Denmark was commissioned. Today it is the third cheapest of 400 district heating systems and still operating. Geothermal energy will also in the future be an important and reliable part of the local district heating supply,” says Søren Berg Lorenzen, managing director of Danish Geothermal District Heating, a consulting engineering company owned by the Danish district heating companies. It is possible to establish similar geothermal plants in many other existing Danish district heating areas, but if geothermal energy is to play a role in the green and sustainable district heating supply of the future, it is necessary for the state to once again get involved in geothermal energy.