Tillack, Tobias

Diploma Thesis:
2044

Topic:
Fundamental investigation into marketable structural solutions for the large-scale utilisation of geothermal energy

Editor:
Tobias Tillack

University Professor Responsible:
Univ.-Prof. Dr.-Ing. Dipl.-Wirt.-Ing. Jens Otto

Supervisor:
University Supervisor: Dr.-Ing. Jan Kortmann

Editing Period:
13.08.2025 until 14.01.2026

Abstract: 
The study examines commercially available geothermal systems for large-scale heating and cooling and evaluates them in terms of technical, economic, ecological and regulatory aspects. Geothermal probes, ground collectors, energy piles, and groundwater and surface water systems are analysed. Based on a literature and market analysis, an evaluation matrix is developed that enables a transparent comparison of the systems. The results show that geothermal energy has great potential for reducing CO2 emissions, but its suitability depends heavily on site conditions and the quality of planning. Ground-coupled systems prove to be particularly robust, while water-coupled systems are highly efficient but also have increased requirements in terms of approval and operation. The study derives practical recommendations from these findings and highlights development potential for the future large-scale use of geothermal systems.