Good locations for obtaining energy from wastewater are to be found in cities and conurbations, and also in smaller towns and villages that are close to sufficiently large wastewater collectors. Ultimately, the same questions need to be asked with every property project when considering the option of using heat from wastewater. Firstly: Where is the nearest public sewer network? Secondly: How much wastewater does it carry? Thirdly: What is the temperature of the wastewater? Some sewer network operators now provide energy maps online that you can use to check any particular location in seconds yourself. Other sewer network operators will provide this information on request. You can talk to us at any time if you want to check a location. Important: Heating and cooling with energy from wastewater is already competitive today without any subsidy. Up to 14 % of the requirement for heat in buildings in Germany can be met with energy from wastewater. In Germany energy from wastewater meets all the requirements of the Building Energy Act (GEG). In new buildings, renewable energies must be used at least proportionally to cover the heat demand. For existing buildings, the use of renewable energies is encouraged through subsidies.
