In rural India, cookstoves are in many places still made of mud and are operated through burning firewood. Burning firewood inside not only causes indoor air pollution through smoke and thus causes respiratory illnesses but due to its inefficiency also leads to high GHG emissions and contributes to deforestation as it requires people to collect wood.

This project tackles all of these issues by installing household clean and efficient biogas plants that are operated with cattle dung. The household collects the manure of its cattle and feeds it combined with water into the tank of the plant. In a fermentation process, the methane is separated from the slurry and rises into a biogas tank allowing the household to use the biogas as an energy source. The slurry further passes into an outlet tank and can be used as fertilizer for the fields. Hence, the project replaces firewood with biogas stemming from cattle manure that would have otherwise been left to decay on the field.