The BBG Donau Wald company deals with the treatment of organic waste and green waste collected from approximately 504,000 inhabitants in the metropolitan city of Passau, Germany, as well as of 4 adjacent districts. The company operates a biogas plant in Passau-Hellersberg, which can process 47,000 tonnes of organic waste per year. Thanks to the recent expansion of the plant, with the addition of a new engine, the system can now produce approximately 12 million kWh of electricity, which is fed into the public network and approximately 6 million kWh of thermal energy. In addition, of course, to the digestate which can be used as a fertiliser. This state-of-the-art, environmentally conscious and future-oriented company has also installed a new atmospheric emissions treatment system, so that the plant is already compliant with Phase II of the Renewable Energy Law (EEG).