As part of the geotechnical seminar series at the Institute of Soil Mechanics and Rock Mechanics at the Karlsruhe Institute of Technology (KIT), Dr. Koppmann gave a lecture on 20.07.2023 focusing on "Exploiting near-surface geothermal energy by thermally activated steel sheet piles - from research to practical application". In his presentation, he provided information on the basic principle of the thermal activation of sheet piles, the results of a research project and the practical application in pilot and field projects.