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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
- Carper 2010 Analysis and Appendix(PDF 2.49 MB)
- All State Emissions(Excel 70 KB)
Detailed Data Files:
- IPM Run - Carper 2010 - Scenario 1 (Zip, 4.4 MB)
- IPM Run - Carper 2010 - Scenario 2 (Zip, 4.4 MB)
- IPM Run - Carper 2010 - Reference Case (Zip, 4.4 MB)
July 2009 EPA Multi-Pollutant Analyses: Alternative SO2 and NOx Caps
- Carper Analysis (Powerpoint 4.28 MB)
- Carper Analysis Appendix (Powerpoint 2.48 MB)
- All State Emissions (Excel 1.78 KB)
Detailed Data Files:
- IPM Run - Carper - Scenario 1 (Zip, 4.3 MB)
- IPM Run - Carper - Scenario 2 (Zip, 4.3 MB)
- IPM Run - Carper - Scenario 3 (Zip, 4.3 MB)
- IPM Run - Carper - Scenario 4 (Zip, 4.3 MB)
- IPM Run - Carper - Scenario 5 (Zip, 4.3 MB)
- IPM Run - Carper - Scenario 6 (Zip, 4.3 MB)
- IPM Run - Carper - Reference Case (Zip, 4.3 MB)
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
- Documentation Supplement for EPA's Base Case 2009 ARRA
- Addendum to Documentation Supplement for EPA's Base Case 2009 ARRA
- NEEDS v3.02 ARRA
- Further modeling documentation found in EPA's IPM Base Case 2006 (v3.0)