Thermal Response Test (TRT) Database Development and Integration for Shallow Geothermal Applications: The FIS-GP Example

Germany’s transition to renewable energy sources places increasing importance on the efficient use of shallow and medium-depth geothermal systems. The WärmeGut project supporting this energy transition, is funded by the Federal Ministry for Economic Affairs and Energy (Bundesministerium für Wirtschaft und Energie). A central element of this initiative is the development of a comprehensive database to systematically record and evaluate geothermal data obtained from Thermal Response Tests (TRTs) and temperature-depth profile measurements.

These measurements are essential for obtaining thermal properties for subsurface characterization, yet historically, the data have been fragmented, inconsistently stored, and often inaccessible to practitioners and researchers. The creation of a dedicated TRT Database addresses these gaps by enabling standardized data collection, quality control, and long-term storage, thereby supporting more reliable planning and simulation of geothermal systems.

To maximize its impact and usability, a key solution proposed is the integration of this TRT data module into the existing Geophysics Information System (https://www.fis-geophysik.de), a platform managed by the LIAG – Institute for Applied Geophysics. The Geophysics Information System currently provides structured access to a wide range of geophysical measurements and preliminary subsurface evaluations, such as underground temperature profiles. Incorporating TRT data will enhance the system’s value by linking thermal performance insights with broader geological and geophysical contexts.

Ultimately, this effort supports more informed decision-making in geothermal energy development across Germany, fosters research synergies, and contributes to the national goals of energy efficiency and climate resilience.