From May to August 2023, IWEN and the Institute of Fluid-Flow Machinery of the Polish Academy of Sciences (IMP PAN) are implementing a SEED MONEY project under the Interreg South Baltic program. Within the project "DecarbonDHS", a workshop on the promotion of sustainable district heating systems took place in Gdańsk, Poland, at the end of June. Experts from research, industry and city government came together to explore innovative technologies and promote energy-efficient investments. This workshop sets the course for a greener future in the Baltic Sea region.