SDHtake-off is implemented in a cooperation of associations, enterprises and institutes of the district heating and solar thermal sectors:

• Solites, Steinbeis Research Institute for Solar and Sustainable Thermal Energy Systems – Germany (project coordinator)
• AGFW, German Heat and Power Association
• Energie Graz - Austria
• S.O.L.I.D. Company for Installation of Solar and Design - Austria
• Marstal District Heating – Denmark
• PlanEnergi - Denmark
• AIRU, Italian District Heating Association
• Ambiente Italia - Italy
• Association for District Heating of the Czech Republic
• CityPlan – Czech Republic
• Euroheat & Power - Belgium
• CIT Energy Management - Sweden