The Biogas Subcommittee focuses on building capacity within Partner Countries to leverage common interests across the areas of agriculture, municipal solid waste, and municipal wastewater. These interests include 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.
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Featured Resources

Biogas Wastewater Assessment Technology Tool (BioWATT)

Biogas Done Right - Introduction

Methane Mitigation Matters: Climate Change

Using Animal Manure as a Resource



Scaling Sludge Mountains: Breaking Down Barriers for Chinese Cities to Turn Sludge Waste into Energy

Naucalpan, Mexico Waste Characterization Study

From Farm to Table to Energy: Co-digesting China’s Urban Food Waste in Wastewater Treatment Plants

Resource Details
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Biogas Wastewater Assessment Technology Tool (BioWATT) (2016 - Word)
The Biogas Wastewater Assessment Technology Tool (BioWATT) provides a quick and preliminary assessment of wastewater-to-energy projects. Through BioWATT, users can receive a specific summary of their biogas production estimates for various wastewater-to-energy technologies, electricity generation potential from the produced biogas, greenhouse gas savings associated with biogas-generated electricity, and more.
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Biogas Done Right - Introduction (2019 - Video)
Jorge Hilbert explains and indrocuces the importance of biogas in the agricultural sector, while additionally explaining biogas’s potential for increasing future energy efficiency and technological sustainability.
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Methane Mitigation Matters: Climate Change (2015 - Video)
Methane is a prevalent manmade greenhouse gas that traps 28 times more heat than carbon dioxide (CO2). Reducing methane emissions by recovering and using methane as a clean energy source offers many benefits for the environment and local communities. This video highlights the many ways that reducing methane can benefit the environment and local communities.
  • Decreased greenhouse gases
  • Better air and water quality
  • Improved human health
  • Enhanced energy security
  • Increased worker safety
  • Expanded economic growth

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Using Animal Manure as a Resource (2019 - Video)
Anaerobic digestion, or AD, is the biological process that breaks down biological materials like compost or manure into biogas. Livestock manure accounts for 3 percent of man-made methane emissions globally. Methane, when captured and stored, can be used to generate electricity and heat, or it can be processed into natural gas fuel. By capturing the biogas, we are also preventing the release of methane, one of the most potent greenhouse gases, to the atmosphere.
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OrganEcs (2016 - Website)
OrganEcs aims to help local decision makers in their first evaluation of different treatment options (e.g., composting options and/or anaerobic digestion options). OrganEcs helps users determine the economic feasibility of waste management scenarios by calculating tipping fees, sales of products (e.g., organic compost), and the internal rate of return. OrganEcs use requires expert support.
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SWEET (2017 - Website)
SWEET is a free Excel tool created by the Waste Initiative. SWEET helps users scope emissions sources such as waste collection and transportation, open burning, landfill gas collection systems, organic waste management projects, waste handling equipment (e.g., bulldozers), and waste incineration facilities. It estimates waste sector emissions including methane, black carbon, and several other pollutants. It also evaluates emissions reduction benefits of multiple alternative waste management scenarios.
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Scaling Sludge Mountains: Breaking Down Barriers for Chinese Cities to Turn Sludge Waste into Energy (2019 - PDF)
The Wilson Center’s China Environment Forum (CEF) produced this sludge scoping report for the U.S. EPA and the Global Methane Initiative. The report describes drivers that created mountains of municipal sludge, introduces key political and research entities involved in sludge regulation in China, reviews obstacles in adoption of anaerobic digestion, provides a case study of the challenges facing sludge-to-energy projects, and highlights opportunities for U.S. government, cities, and companies to engage with Chinese government agencies.
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Naucalpan, Mexico Waste Characterization Study (2019 - Image)
In March 2017, the U.S. Environmental Protection Agency – as a lead partner in the Waste Initiative – conducted a waste characterization study at the municipality’s transfer station. The study indicated that approximately 69% of the waste handled at the transfer station could be recycled or otherwise diverted from the landfill, and that more than half of the waste could be used as feedstock in composting or anaerobic digestion projects. The municipality is using the results of the study to inform decision making about the project design and procurement options.
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From Farm to Table to Energy: Co-digesting China’s Urban Food Waste in Wastewater Treatment Plants (2019 - PDF)
Prepared by the Wilson’s Center China Environment Forum with assistance provided by GMI, the report highlights food waste trends in Chinese cities and assesses the possibilities of redirecting food waste to municipal wastewater (MWW) and sludge-to-energy (StE) plants. This report also highlights some specific gaps that GMI and other organizations could help fill and potential Chinese partners to engage with to highlight the environmental and economic benefits of co-digestion.
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Industries targeted by GMI for strategic efforts to reduce emissions account for more than 50% of the world’s methane emissions. GMI and our Partner Countries have worked to reduce barriers to the recovery and use of methane as a clean energy source. Visit the Biogas sector project list to learn about methane-related projects and activities at GMI sites.

View GMI Project Sites Map


GMI Subcommittee members, Partner Countries, and Project Network members participate in events taking place around the world. Visit the GMI Event calendar to learn about upcoming Biogas sector workshops, Subcommittee meetings, conferences, expos, and other GMI-related events.

View upcoming events

Project Network

The Project Network is a growing community of private-sector entities, financial institutions, and other governmental and non-governmental organizations with an interest in methane abatement, recovery, and use projects. Visit the Biogas sector Project Network member list to learn about the organizations that are critical to GMI's success.

Check out the Project Network


Three technical Subcommittees and a Steering Committee govern the work of GMI within industry sectors. The Biogas sector Subcommittee list includes the names and roles of Co-Chairs and Partner Country delegates to the Subcommittee.

View the Subcommittee Members