A new digital map makes it possible for the first time to see at a glance where near-surface geothermal energy can be used effectively throughout Germany. The interactive tool was developed as part of the ‘WärmeGut’ research project, which is funded by the Bundeswirtschaftsministerium.
The Leibniz-Institut für Angewandte Geophysik (LIAG) in Hanover, the Universität Göttingen and the company geoENERGIE Konzept from Freiberg were in charge of the „WärmeGut“ project. In close cooperation with all 16 state geological offices and the Bundesanstalt für Geowissenschaften und Rohstoffe (BGR), an overview map was created, which is now available free of charge in the „GeotIS“ system.
Geothermal energy – an underestimated natural resource
The heat stored deep in the ground is available all year round – regardless of wind and sun. Nevertheless, geothermal energy has so far led a shadowy existence in Germany. The WärmeGut project aims to change that.
The team led by Professor Dr Inga Moeck, head of the System Integration Department at LIAG and professor at the Universität Göttingen, has evaluated extensive geological data from all over Germany and compiled it into a practical decision-making aid. The aim is to provide greater clarity and easier access to the use of geothermal energy.
Traffic light system provides guidance for everyone
The map is based on a simple traffic light principle:
- Green: unrestricted use possible
- Yellow: restricted conditions – further examination necessary
- Red: use not recommended
By clicking on the respective region, users receive further information and direct links to the relevant state authorities for detailed enquiries.
Particularly helpful: the map is not only aimed at experts, but also at local authorities, builders and private individuals who want to get an initial assessment of the feasibility of a geothermal energy system.
A milestone for the German energy transition
For project manager Prof. Dr. Moeck, the map is a ‘historic milestone.’ It brings order to what was previously a very complex data situation and, for the first time, creates a uniform nationwide basis for geothermal planning.
The team hopes that the interactive map will give a real boost to the heat transition. Whether municipalities, industry or private households – everyone is faced with the question of how to heat their homes in a climate-friendly way in the future. And this is exactly where geothermal energy can offer a stable and sustainable solution.
What comes next: more maps and specific location analyses
The current map is just the beginning. The research team is already working on further applications, for example for other geothermal technologies such as surface collectors or groundwater wells.
The aim is to create a new generation of interactive maps that not only show suitability, but also calculate exactly how much thermal energy can actually be obtained at a specific location – a real added value for municipal heating planning.
Conclusion: Making geothermal energy visible – accelerating the energy transition
Geothermal energy is here – we just need to use it. The new map finally makes this ‘invisible’ heat source visible and tangible. It provides guidance, promotes expansion and shows how Germany is moving closer to its goal of a climate-neutral heat supply.
