The aim of the co-operation between Stadtwerke Schwerin (EVSE) and the GFZ Potsdam is the sustainable development of the geothermal heat supply in Schwerin. The aim of the cooperation is to jointly explore the current state of the geothermal field in the Schwerin area and to carry out modelled assessments of the performance, sustainability and service life of the geothermal doublets currently under development and of future geothermal doublets (also in the low-temperature range).