Mijnwater starts drilling for new heat source on Terhoevenderweg in Heerlen New source expands Parkstad’s district heating and cooling network Mijnwater has started drilling work for a new heat source at Terhoevenderweg in Heerlen, marking another important step in the expansion of its sustainable heating and cooling network in Parkstad. After a period of preparation, work began this week and is expected to continue for three to four weeks. Because the operation must be completed safely and efficiently, the drilling is taking place 24 hours a day, seven days a week. The project is part of Mijnwater’s broader effort to strengthen a low-carbon energy system for the region. The new source will tap warm groundwater in a former mine passage deep underground and feed that energy into the company’s network. For Heerlen and the surrounding area, this means further development of a district energy system that draws value from the region’s mining past while supporting a more sustainable energy ...
Kalisz Embarks on Geothermal Revolution: 1,700-Meter Well to Unlock Network of Thermal Pools, Heated Apartment Blocks, and Homes By: Robert Buluma In the heart of Poland’s Greater Poland Voivodeship, the historic city of Kalisz is taking a bold leap into the renewable energy future. On February 25, 2026, city authorities signed a landmark contract to drill an exploratory geothermal well reaching 1,700 meters deep. The project, dubbed “Kalisz GT1,” aims to confirm the presence, quality, temperature, and productivity of thermal waters beneath the city — potentially transforming Kalisz into a hub for low-carbon district heating and a network of therapeutic thermal pools. The headline-grabbing Polish announcement — “Sieć basenów termalnych, ogrzane bloki i domy. Miasto drąży odwiert na 1700 metrów” — perfectly captures the ambition: a geothermal-powered network of thermal baths, heated residential blocks, and family homes. If successful, this could slash heating costs, improve air quality,...