About Biogas - How It Works
Biogas is produced from the natural process of anaerobic digestion (AD). AD is the fermentation that takes place in the absence of oxygen (air tight vessels) and by which organic material is broken down and converted in biogas. It is the same process that occurs in the stomach of a cow.
Biogas is a mixture of methane (CH4) and carbon dioxide (CO2), used to generate renewable energy such as electricity, heat and natural gas. Feedstocks for biogas production take CO2 from the air during growth, which in turn is released during energy production. The process creates a closed loop carbon cycle, making it one of the most efficient low-carbon renewable technologies available.
Biogas production can use a range of organic materials (known as feedstocks or biomass) ranging from farming break crops to food wastes. The process also produces a valuable natural fertiliser, improving soil quality and reducing the need for chemical fertilisers.