70372 Stuttgart: Europe's largest wastewater heat utilisation plant will in future supply the new residential and commercial area with 850 residential units, commercial areas, parks, squares and streets on a total of 22 hectares and is thus a beacon project for renewable energies. The sewer will provide local heating and cooling via a 300 m long heat exchanger. The system has been installed since 2018 and will be put into operation as soon as the heating centre is also in full operation. The quarter is still under construction. Planned completion of the quarter: 2021