What makes the project original in the first place is the fact that the Braunschweig wastewater treatment plant is 100% self sufficient, thanks to the biogas produced from the high temperature co-digestion of both the sludge to be removed and the reclaimed oils and fats collected locally, as well as the harnessing of gas from a neighbouring landfill site and from the methane fermentation of green waste.

But the project reaches even further as the wastewater, once purified in the plant, is used to irrigate the neighbouring corn and rye fields, which are fertilized by digested sludge as well. The crops harvested there are in turn "methanized" in a digester in order to produce biogas, which is then run through a 20 km pipeline to the Braunschweig electricity and heat power plant.

All in all, the biogas plant will supply 3,800 homes with electricity and 1,000 homes with heating.