msagrarfilm / Since the beginning of the 1990s, the Humus Earthworks in Niddatal-Ilbenstadt (county Wetterau) has been handling green waste from private gardens and organic waste from the brown bio containers of around 300.000 residents in the county of Wetterau, north of Frankfurt. The compost facility was enlarged in 2007 to include an additional step in the fermentation process. Since then, the Wetterau Composting Plant (Kompostierung Wetterau) produces more than four million kilowatt hours of electricity from biogas per year. This amount can meet the needs of 1,500 households. The county of Wetterau, with its waste company, is the majority shareholder alongside with regional agricultural organizations.