Methane Capture: Options for Greenhouse Gas Emission Reduction

Greenhouse Gases:

Methane Capture: Options for Greenhouse Gas Emission Reduction

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This article has been reviewed by the following Topic Editor: C Michael Hogan

Global context of methane capture

Methane capture is an important strategy for reduction of this powerful greenhouse gas. A number of developed countries are developing and implementing technologies for such methane capture with emphasis upon capture of landfill offgassing, petroleum refining, rice agriculture and livestock management.

Summary of the U.S. Congressional Research Service report

Research on climate change has identified a wide array of sources that emit greenhouse gases (GHGs). Among the six gases that have generally been the primary focus of concern, methane is the second-most abundant, accounting for approximately 8% of total U.S. GHG emissions in 2008. Methane is emitted from a number of sources. The most significant are agriculture (both animal digestive systems and manure management); landfills; oil and gas production, refining, and distribution; and coal mining.

As policymakers consider options to reduce GHG emissions, methane capture projects offer an array of possible reduction opportunities, many of which utilize proven technologies. Methane capture projects (e.g., landfill gas projects, anaerobic digestion systems) restrict the release of methane into the atmosphere. The methane captured can be used for energy or flared. Methane capture challenges differ depending on the source. Most methane capture technologies face obstacles to implementation, including marginal economics in many cases, restricted pipeline access, and various legal issues.

Some of the leading methane capture options under discussion include market-based emission control programs, carbon offsets, emission performance standards, and maintaining existing programs and incentives. At present, methane capture technologies are supported by tax incentives in some cases, by research and demonstration programs in others, by regulation in the case of the largest landfills, and by voluntary programs. Congress could decide to address methane capture in a number of different ways, including (1) determining the role of methane capture in energy and environmental legislation; (2) determining whether methane capture should be addressed on an industry-by-industry basis; and (3) determining if current methane capture initiatives will be further advanced with legislative action regardless of other facets of the environmental policy debate. What role methane capture would play in prospective regulations to control GHGs is among the issues that Congress faces.

A few government programs have supported the capture of methane to mitigate climate change. The Methane-to-Markets Partnership, administered by the Environmental Protection Agency (EPA), is an international initiative to reduce global methane emissions. EPA also oversees a variety of voluntary programs related to the Methane-to-Markets initiative (e.g., Coalbed Methane Outreach Program, Natural Gas STAR Program, Landfill Methane Outreach Program, AgSTAR Program).

This report discusses alternatives for addressing methane capture, sources of methane, opportunities and challenges for methane capture, and current federal programs that support methane recovery.

Acknowledgement

The summary was taken from the Congressional Research Service Report R40813 by Kelsi Bracmort, Jonathan L. Ramseur, James E. McCarthy, Peter Folger, and Donald J. Marples

View/Download Attached File: R40813.pdf

Citation

Congressional Research Service (Lead Author);C Michael Hogan (Topic Editor) "Methane Capture: Options for Greenhouse Gas Emission Reduction". In: Encyclopedia of Earth. Eds. Cutler J. Cleveland (Washington, D.C.: Environmental Information Coalition, National Council for Science and the Environment). [First published in the Encyclopedia of Earth July 27, 2011; Last revised Date October 13, 2011; Retrieved May 24, 2012 <http://www.eoearth.org/article/Methane_Capture:_Options_for_Greenhouse_Gas_Emission_Reduction?topic=49554>

The Author

Congressional Research ServiceThe Congressional Research Service (CRS) is the public policy research arm of the United States Congress. As a legislative branch agency within the Library of Congress, CRS works exclusively and directly for Members of Congress, their Committees and staff on a confidential, nonpartisan basis. Congress created CRS in order to have its own source of nonpartisan, objective analysis and research on all legislative issues. The sole mission of CRS is to serve the United States Congress. All CRS report ... (Full Bio)

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