The Waste Methane Toolbox: Policy Solutions for a Low Methane Future
The waste sector, encompassing both solid waste and wastewater, is responsible for approximately 20% of global anthropogenic methane emissions — equivalent to roughly 5.4 gigatons of carbon dioxide equivalents annually. As a significant contributor to methane pollution, addressing emissions from the waste sector is critical to achieving global methane reduction targets. This guide provides a clear framework for policymakers to navigate the often-overwhelming array of classifications and taxonomies for environmental policy approaches; it’s aim is to aid these decision-makers as they design and implement solutions to accelerate methane mitigation from solid waste.
Building on established frameworks from organizations like the Intergovernmental Panel on Climate Change, United Nations Environment Programme, and the Organisation for Economic Co-operation and Development — which typically classify waste policies by type — this guide introduces a novel matrix. This matrix depicts how countries can leverage a range of policy approaches within the solid waste management (SWM) chain to mitigate methane emissions effectively. Rather than endorsing a single policy approach, the guide synthesizes existing literature to offer flexible, actionable insights for national governments.
Key highlights include:
- Waste Sector Methane Mitigation Policy Matrix
- Policy Development Considerations
- Case Studies
The guide underscores the importance of designing policies as part of a holistic strategy to build integrated SWM systems that manage all waste materials effectively. By offering a simplified and structured approach to methane mitigation in the waste sector, this guide equips policymakers to contribute meaningfully to limiting global warming to 1.5 degrees Celsius while supporting environmental and community health.
