Green Therma ApS (Green Therma) and Geothermie Rupertiwinkel GmbH (GTR) have signed a Letter of Intent to explore the feasibility of deploying a closed-loop geothermal heat solution in the Rupertiwinkel area in Bavaria, Germany.
The collaboration will evaluate the potential application of Green Therma’s Heat4Ever™ technology, a closed-loop geothermal system designed to extract geothermal heat while minimizing the geological risks typically associated with conventional hydrothermal geothermal projects. The technology was developed in collaboration with GFZ Potsdam as part of the European TRANSGEO initiative, which aims to explore how existing wells can be repurposed for geothermal heat extraction and storage.
The initial phase will focus on a feasibility assessment, including geological analysis, heat demand evaluation, and a preliminary design of a Heat4Ever™ geothermal plant. If successful, the project could form the basis for future development of a geothermal heat supply supporting industrial and district heating demands in the region.
The company is already working towards a full-scale deployment of the Heat4Ever technology in Aalborg, Denmark, with completion targeted by 2027. It had also signed an LOI to evaluate the feasibility of deploying the solution in Kaiserslautern, also in Germany.
“This collaboration represents an exciting opportunity to demonstrate how closed-loop geothermal technology can unlock reliable geothermal heat with lower geological risk,” said Jørgen Peter Rasmussen, CEO of Green Therma.
GTR had just recently been acquired by ZeroGeo Energy, along with it the existing assets and the 91-km² Ruperti II geothermal permit area in southeast Bavaria. The assets include two cased boreholes that were drilled in 2021 to depths of about 6200 mMD, and a full functional drilling paid with three cellars ready for drilling.
“We see strong potential in combining our geothermal development ambitions with Green Therma’s innovative Heat4Ever™ solution to help deliver sustainable heat for the region,” added Anthony Hawkins, Managing Director of GTR.
Source: Geothermie Rupertiwinkel
