Mine water, basis for renewable energy
After the closure of the coal mines in Heerlen and the surrounding area the mine passages filled with groundwater, which is heated by the earth naturally. The geothermal source under our feet remained untouched for decades until the municipality of Heerlen conducted a study in 2005 into the possibility of using water from the mines for heating and cooling buildings, homes, and offices. That had far-reaching positive consequences.
First connection in 2008
The renewable energy source has served as a heat source (for heating) and heat sink (for cooling) since 2008. The water, collected from five wells, is transported via an underground exchange station and pipe network and is currently supplied to six locations in Heerlen. Expansion continues, with the Maankwartier Heerlen district to be connected this year and Douve Weien/Caumerveld to follow soon thereafter. Mijnwater B.V. ensures that each location receives the required energy exactly when it is needed.
Full-fledged supplier of renewable energy
The independent company Mijnwater B.V. (established in 2013) has the ambition to further develop the project in the municipality of Heerlen to become a fully renewable energy company. Mijnwater B.V. hopes to be able to supply approximately 800,000 m2 of indoor space (homes and offices) with mine water energy by the first quarter of 2016. With this endeavour Mijnwater B.V. contributes to a 65% reduction of CO2 emissions for the heating and cooling of the connected properties in the region.