Heat transition in existing urban districts: Deployment of shallow geothermal energy depending on technical, economic and legal constraints

Peter Pärisch, Dipl.-Ing.
Tel.: +49 (0)5151-999 648
E-Mail: paerisch@isfh.de

Mu Huang, M.Sc.
Tel.: +49 (0)5151-999 647
E-Mail: huang@isfh.de

Cold thermal network with integration of borehole heat exchangers and solar thermal regeneration

In order to achieve the short- and medium-term climate targets in the building sector in Germany there is a significant need for a market penetration of heat pump systems in existing buildings, where the modernization of existing heating systems to heat pump systems is not yet very advanced. The joint project UrbanGroundHeat has two central goals in this regard. Based on model-based potential investigations and preliminary planning, the feasibility of geothermal energy supply solutions for existing districts of the energy suppliers participating in the project is to be elaborated so that a real implementation is prepared as a central project goal. For this purpose, the technical, regulatory and economic requirements in the investigated districts are to be identified and evaluated. Furthermore, the development of cross-case guidelines and the enhancement of the planning tools will create essential prerequisites to enable the energy suppliers participating in the project to implement geothermal projects in existing quarters in the future.

The project consortium is composed of partners with different perspectives on this issue. ISFH will focus on the technical and economic possibilities of heat supply and utilization in buildings and integrating solar thermal energy into the regeneration concept. Together with the project partners, ISFH will take over the modeling of the near-surface geothermal systems.

Project partner

Fraunhofer Institute for Energy Economics and Energy System Technology (IEE)

Fraunhofer Research Institution for Energy Infrastructures and Geothermal Systems IEG

Stiftung Umweltenergierecht

Stadtwerke Solingen GmbH


GGEW, Gruppen-Gas- und Elektrizitätswerk Bergstraße Aktiengesellschaft

Stadtwerke SH GmbH & Co. KG

GASAG Solution Plus GmbH

Trianel GmbH


01.01.2023 – 31.12.2025


This Project is supported by the Federal Ministry for Economic Affairs and Climate Action (BMWK) on the basis of a decision by the German Bundestag under grant number 03EN3066B. The responsibility for the content of this publication lies with the authors.

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