Denmark’s Green Therma ApS and Germany’s Geothermie Rupertiwinkel GmbH (GTR) have signed a Letter of Intent (LoI) to explore the feasibility of deploying a closed-loop geothermal heat solution in the Rupertiwinkel geothermal area in Bavaria.
“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.
The two sides will evaluate the potential application of Green Therma’s Heat4Ever technology, a closed-loop geothermal system designed to extract geothermal heat while minimising the geological risks typically associated with conventional hydrothermal geothermal projects.
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, one of Germany’s wealthiest areas.
“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 Geothermie Rupertiwinkel GmbH.
Earlier in March, Green Therma also signed an LoI with SWK Stadtwerke Kaiserslautern Versorgungs-AG to assess the deployment of closed-loop geothermal heat in Kaiserslautern.
This project aims to evaluate how Green Therma’s Heat4Ever solution can supply geothermal heat into SWK’s 105-km district heating network as part of SWK’s ambition to achieve carbon-neutral heat by 2045.
In February, ZeroGeo Energy GmbH announced the purchase of GTR and its plans for a green energy hub in Kirchanschöring, Bavaria, consisting of a geothermal heating and cooling and/or power development, plus a battery energy storage system.