Food chain, biogas is generated as a metabolite. At  50-85%, combustible methane, in addition to carbon dioxide, is a major constituent of biogas and is the actual renewable energy source. This natural decomposition process also takes place in anaerobic zones in the soil, in lakes and ponds, but also in tanks for sewage sludge and in landfills (landfill gas).

Therefore a biogas plant is a system for decentralised renewable energy generation. Find out more...