Sanitation in rural and semi-urban areas including linking sanitary toilets with cattle dung biogas plants .

Biogas is an environmentally-friendly, renewable energy source. It’s produced when organic matter, such as food or animal waste, is broken down by microorganisms in the absence of oxygen, in a process called anaerobic digestion. For this to take place, the waste material needs to be enclosed in an environment where there is no oxygen.

Biogas can occur naturally or as part of an industrial process to intentionally create it as a fuel.