Small-scale biogas plant made of brick and cement then buried below ground.

Small-scale biogas plant being built in central Vietnam. These simple plants can be built by local masons using materials such as bricks and cement

Biogas for Cooking

Reduce SourcesBuildingsShift Energy Sources
CO2 Equivalent
Reduced / Sequestered
Billion $US
Net First Cost
(To Implement Solution)
Billion $US
Lifetime Net
Operational Savings
Anaerobic digesters process backyard or farmyard organic waste into biogas and digestate fertilizer. Biogas stoves can reduce emissions when replacing biomass or kerosene for cooking.

Solution Summary

This is a new solution; a summary is forthcoming.


Small biogas reactors can be installed in homes and communities to enable cooking with biogas instead of wood and charcoal stoves, which have health and environmental consequences. It is projected that by 2050, small biogas digesters that digest animal and crop wastes can replace 57–87 million inefficient cookstoves in countries in Asia and Africa. The cumulative result: 4.6–9.7 gigatons of carbon dioxide emissions avoided at a net cost of US$25–52 billion. These stoves increase operating costs, however, by an additional US$100–209 billion over the lifetime of the reactors.

Note: August 2021 corrections appear in boldface.