District Heating in Baden–Württemberg https://tyskland.um.dk/eksportraadet/energy-environment-industry/district-energy-biogas-advisory/services/district-heating-baden-wuerttemberg
On October 14, the Government in Baden–Württemberg passed a climate law that forces the 103 biggest cities
Energy, Environment and Industry District Energy and Biogas Advisory Services District Heating in Baden–Württemberg