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IPM Analyses of Multi-Pollutant Legislative Proposals

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Various multi-pollutant proposals designed to reduce emissions from the power sector have been introduced in the Senate this decade. EPA agreed to perform detailed analyses for these legislative proposals starting in 2003 in response to Senate requests. That information, along with analysis of EPA's regulatory approach to reducing emissions from the power sector, is provided on this web site. These analyses are based on air quality, health benefits, and power sector modeling projections and estimates through 2025. EPA uses the Integrated Planning Model (IPM) to analyze the impact of air emissions policies on the U.S. electric power sector.

Additional Resources

January 2009 article on the history and outlook for multi-pollutant control efforts.

July 2010 EPA Multi-Pollutant Analyses: Alternative SO2 and NOx Caps


July 2009 EPA Multi-Pollutant Analyses: Alternative SO2 and NOx Caps


IPM modeling of the July 2010 and July 2009 Carper Analysis was based on input assumptions documented for EPA's Base Case 2009 ARRA.

EPA's most comprehensive IPM modeling framework to date was released in 2006, referred to as EPA's IPM Base Case 2006 (v3.0). Since that time, EPA has made a series of adjustments to various model parameters for individual analyses based on updated market projections and policy focus. The documentation below illustrates where modeling assumptions and parameters were changed for subsequent IPM analyses from the original documentation of EPA's IPM Base Case 2006 (v3.0).

Documentation Supplement for EPA's Base Case 2009 ARRA

Historical Multi-Pollutant Analyses
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