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IPM Analyses of Climate Change Legislative Proposals

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EPA uses the IPM model to analyze the power sector's response to several legislative proposals for reducing greenhouse gas emissions. The results are presented in tandem with EPA's economy-wide modeling of climate change legislative proposals. This webpage includes supplemental modeling documentation for each of the analyses listed below, to show where EPA adjusted various IPM model parameters based on updated market projections and policy focus.

Please note that the documentation found below for these analyses supplements the more comprehensive documentation of EPA's IPM Base Case 2006 (v3.0); the updated input parameters and assumptions found in each supplemental documentation were used to model the listed legislative proposal.

American Power Act Analysis, June 2010

EPA's IPM 2010 Reference Case included changes to the following IPM input assumptions, mainly to reflect updated projections from the Annual Energy Outlook 2010. Supplemental documentation on the specific parameters is forthcoming and will be uploaded to this website soon.
  1. Revised electricity demand
  2. Updated power technology costs
  3. Updated state renewable portfolio standards and regional climate programs.
  4. International electricity imports and exports
  5. Immediate-term wind build limit (consistent with AEO 2010 projections)
  6. Title IV SO2 allowance bank estimate
Documentation Supplement for EPA's IPM 2010 Reference Case
American Power Act - Analytical Results

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American Clean Energy and Security Act Analysis, June 2009

EPA's IPM Base Case 2009 ARRA - EPA included additional updates to reflect the power sector related provisions of the American Recovery and Reinvestment Act of 2009 along with other key updates, including:
  1. Revised electricity demand
  2. Updated power technology costs
  3. Updated biomass supply curve
  4. Updated state renewable portfolio standards and renewable energy provisions of ARRA
  5. CCS in reference case
  6. Power sector regulatory treatment (i.e., CAIR)
  7. Run year mapping
  8. Financial assumptions
  9. State power sector rules and settlements
  10. Updates to the National Electric Energy Data System (NEEDS)
  11. Title IV SO2 allowance bank estimate
Documentation Supplement for EPA's Base Case 2009 ARRA
American Clean Energy and Security Act - Analytical Results

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Waxman-Markey Discussion Draft Analysis, April 2009

EPA's IPM Base Case 2009 - EPA included additional updates to carbon assumptions for analyses of potential domestic climate change mitigation programs and strategies (Waxman-Markey Discussion Draft). Enhancements include:
  1. Revised electricity demand
  2. Updated power technology costs
  3. Carbon capture and storage for existing coal plants
  4. Updated natural gas supply amd price projection
  5. Renewable portfolio standards and climate programs at the State level
  6. Updated constraints on new nuclear, renewable, and coal with CCS capacity

Documentation Supplement for EPA's Base Case 2009

Waxman-Markey Discussion Draft - Analytical Results

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Clean Energy Jobs and American Power Act, Climate Security Act, and Low-Carbon Economy Act Analyses, July 2007

EPA's IPM Base Case (v3.01) - EPA updated various carbon assumption enhancements for analyses of potential domestic climate change mitigation programs and strategies (S. 280, S. 1766, and S. 2191). Enhancements include:
  1. Carbon capture and storage for potential (new) units
  2. Biomass co-firing capability for existing coal boilers
  3. Updated constraints on new nuclear and renewable capacity builds
Documentation Supplement for EPA's Base Case (v3.01)
Clean Energy Jobs and American Power Act - Analytical Results
Climate Security Act - Analytical Results
Low-Carbon Economy Act - Analytical Results
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