Our lighthouse project in Sundern, Germany, is a prime example of sustainability and closed cycles with worldwide impact. At the Hellefelder Hhe composting plant near Sundern, Germany, 20,000 tonnes of biowaste from surrounding communities are recycled annually. And all this in the sense of the German Recycling Management Act, which stipulates that first the energetic and then the material recycling must be carried out (cascade use). The biogas produced from the biowaste is used for flexible electricity production by two combined heat and power plants, which also generate about twice as much heat. Thus, about 1200 households can be supplied with electrical energy.