Construction of geothermal drilling site breaks ground in Geiselbullach, Germany
Groundbreaking ceremony of geothermal drilling site construction in Geiselbullach, Germany (source: Amperland Thermalwärme GmbH via LinkedIn)
Carlo Cariaga
8 Sep 2025
Construction of the drilling site for the geothermal heating project in Geiselbullach, Germany has broken ground, with drilling expected in a few months.
Construction work of the geothermal drilling site has officially started at he site of the Joint Municipal Company for Waste Management (Gemeinsames Unternehmen für Abfallwirtschaft / GfA) in Geiselbullach in the municipality of Olching in Bavaria, Germany. The project by Amperland Thermalwärme GmbH (ATW) envisions a geothermal heating facility that will serve the existing district heating network, which is currently supplied by a waste incineration facility.
Two geothermal wells will be drilled from a single pad to a depth of approximately 1725 meters, into an Upper Jurassic aquifer hosting thermal waters that are approximately 73 °C. German drilling company Daldrup & Söhne Aktiengesellschaft (Daldrup & Söhne) had been awarded the contract for the drilling work.
The application for a mining permit for the geothermal heating project was made back in May 2023. Federal funding for the project was confirmed in November 2024, and the approval for the project was granted in June 2025.
If drilling is successful, a central heating plant will be built at the site. This will include a heat exchanger which will serve as the interface between the deep thermal fluids and the circulating fluids of the district heating network. According to the GfA, the drilling site close to the waste incineration plant offers optimal conditions for drilling of the wells, as well as the construction and operations of the heating plant. The site is has 24/7 monitoring and has safety measures in place, including comprehensive groundwater monitoring.
The geothermal project in Geiselbullach is supported by the Federal Funding for Efficient Heat Networks” (BEW) program of the Federal Ministry for Economic Affairs and Climate Protection (BMWK), which provides a 40% investment subsidy for generation facilities and infrastructure.
Source: Merkur and Amperland-Thermalwärme GmbH via LinkedIn
