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The heating and cooling grid rolled out and operated by Mijnwtaer B.V is probably the most innovative district heating grid in Europe. It uses a resource that remained untouched until the municipality of Heerlen conducted a study in 2005 into the possibility of using water from the ancient mines filled with groundwater over the decades.

The geothermal source heats and cools 250,000 m2 of buildings: large office buildings, supermarkets, shops, educational buildings, industry and 400 dwellings.

In this ‘5GDHC’ grid (5th generation), the energy from heating and cooling is exchanged between customers. Surplus is stored in the water present in the mine galleries for later use. Cooling buildings in the summer helps to charge the storage with heat for the winter.

This network makes use of a system of heat pumps that are positioned near the end users. A reduction of CO2 emissions by about 65% is allowed by a large reduction of energy demand.

The easily reproducible nature of this technology is its main advantage. 5GDHC technology can be adapted to all types of thermal energy sources. Pilot projects are already under development in Parkstad-Limburg, near Heerlen, while the European D2Grids projects plans to deploy this type of thermal grids throughout Northwest Europe.

Porteur de projet : Mijnwater BV
Constructeur : Mijnwater BV
Gestionnaire / Concessionnaire : Mijnwater BV

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