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Methane Mitigation Matters: Biogas
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There are common interests and similarities across the areas of agriculture, municipal solid waste, and municipal wastewater.

The Biogas Subcommittee focuses on building capacity within Partner Countries to leverage the common interests across these areas, including biogas energy use, the types of wastes managed, waste treatment technologies, and the potential for synergistic projects involving input streams from multiple sources. Efforts include developing and promoting tools, policy guidance, and project development resources at the national, state, and city level within Partner Countries.


The primary sources of methane emissions from agriculture are livestock enteric fermentation, livestock waste management, rice cultivation, and agricultural waste burning. Of these, livestock waste management offers the most viable, near-term opportunities for methane recovery and utilization. Learn more from the Agriculture technical group page.

Municipal Solid Waste

Municipal solid waste (MSW) management and treatment activities are sources of methane (CH4) emissions worldwide. Learn more from the MSW technical group page.


Methane is produced when the organic material in municipal wastewater decomposes anaerobically. Varying amounts of methane are emitted during the collection, handling, and treatment of wastewater depending on methods employed. A number of techniques can be employed to reduce or recover and use wastewater methane that can yield substantial energy, economic, environmental, air quality, and public health benefits. Learn more from the Wastewater technical group page.

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Tools & Resources

Biogas Wastewater Assessment Technology Tool (BioWATT)

Originally developed by the World Bank and enhanced by GMI, the Biogas Wastewater Assessment Technology Tool (BioWATT) (XLS, 1.8 MB) provides a quick and preliminary assessment of wastewater-to-energy projects.

Based on simple inputs provided by the user, BioWATT provides the following:

  • Biogas production estimate for various wastewater-to-energy technologies
  • Electricity generation potential from the produced biogas
  • Greenhouse gas savings associated with biogas-generated electricity
  • Preliminary assessment of the wastewater treatment facility’s electricity demand that can be met through biogas-generated electricity
  • Preliminary design parameters of major components of a wastewater-to-energy project, such as required digester volume, required gas holder volume, and total combined heat and power (CHP) electric power output
  • Impact on a wastewater treatment facility’s operating expenses (OPEX) by investing in energy generation technology



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