Seismic survey provides go-signal for Eavor-Loop geothermal project in Neu-Ulm, Germany

Neu-Ulm, Germany (source: Stadtwerke Ulm)

Carlo Cariaga 28 Nov 2025

The results of a seismic survey to evaluate the feasibility of a closed-loop geothermal project in Neu-Ulm, Germany have now been made available after extensive analysis. The conditions of the deep subsurface have been deemed favorable. Thus, the project can proceed without restrictions.

Partnering with Stadtwerke Ulm / Neu-Ulm (SWU), Eavor GmbH is proposing the deployment of their Eavor-Loop technology at the Neu-Ulm site, which aims to deliver geothermal energy without the need to drill into subsurface structures that facilitate natural flow of thermal fluids. Instead, heat is extracted from the subsurface via thermal conduction and transferred to surface facilities. The project envisions the first heat supply by 2029.

Work is already ongoing for the first commercial-scale deployment of this technology at the Geretsried site, which is expected to be operational soon.

The results of the seismic survey indicate that there are no major fault zones at the potential project site. Such fault zones are considered to be a hindrance to the operations of closed-loop geothermal system.

“We are very happy that the seismic survey has shown that the location offers good conditions for our project. The fact that we were unable to detect any major faults indicates that the subsurface is suitable and stable. Together with our partner, Eavor GmbH, we will begin concrete planning for the next project phases in the coming months,” said Reinhard Wunder, project manager of the geothermal project.

The project now proceeds to the “Process Design” phase which will involve the planning of surface facilities, borehole design, and permitting. All results of these works will be documented in a report to be prepared by the end of 2026, which will then be the basis of the SWU for deciding whether to continue with the project.

Source: Stadtwerke Ulm