Biogas is a methane rich flammable gas that results from the decomposition of organic waste material. Bio gas is flammable mixture of 50 to 80 percentage of methane (CH4), 15 to 45 percentage of carbon dioxide (CO2) and 5 % of water and some other trace gases. Biogas is clean environment friendly fuel that can be obtained by anaerobic digestion of animal residues and domestic and farm wastes, abundantly available in the outside. Biogas is an important renewable energy resource for rural areas in India.

In Biogas, gas produced is a neat, combustibles and pollution - free fuel. The biogas technology is simple and appropriate for both rural and urban areas. The plant can be maintained and operated by the housewife with little training education. Because biogas consider an ideal fuel for domestic use.