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 IPM Analysis of Proposed Cross-State Air Pollution Rule (CSAPR) 

IPM Analyses of the Cross-State Air Pollution 

Rule (CSAPR) 

You will need Adobe Acrobat Reader to view some of the files on this page. See EPA's About 

PDF page to learn more about PDF, and a link to the free Adobe Acrobat Reader. 

Analysis of the Final Cross-State Air Pollution Rule

On July 6, 2011, the EPA Administrator signed a Notice of Final Rulemaking for the Cross-State 

Air Pollution Rule (CSAPR). EPA analyzed the impact of the final CSAPR on the U.S. electric 

power sector using version 4.10_FTransport of the Integrated Planning Model (IPM). From this 

page you can download documentation for IPM v4.10_FTransport, the NEEDS database of 

electric generation unit records used in the modeling, and the IPM run results files.

Documentation: EPA Base Case v.4.10_FTransport

EPA Base Case v.4.10_FTransport is the IPM version that EPA used to analyze provisions 

considered for inclusion in the Final CSAPR as a result of comments EPA received on the 

CSAPR proposal, issued on July 6, 2010, and the Notice of Data Availability, announced 

September 1, 2010. To learn more about the v.4.10_FTransport assumptions, click the link in the 

first bulleted item below. It provides access to a documentation supplement which focuses on the 

new features and revisions found in EPA Base Case v.4.10_FTransport.

Since EPA Base Case v.4.10_FTransport builds on the last major update to the IPM model (EPA 

Base Case v.4.10) links to the comprehensive documentation for that version of the model are 

provided under the second bulleted item below.

 Download Documentation Supplement for EPA Base Case v.4.10_FTransport - Updates 

for the Final Cross-State Air Pollution Rule (CSAPR)
 Download Documentation for EPA Base Case v.4.10: 

o Chapter 1: Introduction (PDF 260 K) 

o Chapter 2: Modeling Framework (PDF 363 KB) 

o Chapter 2: Appendix 2-1 Data (Excel 12.76 MB) | Appendix 2-1 Graphics (PDF 

1.76 MB) 

o Chapter 3: Power System Operation Assumptions (PDF 1.27 MB) 

o Chapter 3: Appendix 3-9 (Excel 1.83 MB) 

o Chapter 4: Generating Resources (PDF 469 K) 

o Chapter 5: Emission Control Technologies (PDF 1.26 MB) 

o Chapter 5: Appendix 5-1A Wet FGD (PDF 336 KB) | Appendix 5-1B SDA FGD

(PDF 314 KB) | Appendix 5-2A SCR (PDF 148 KB) | Appendix 5-2B SNCR

(PDF 237 KB) 

o Chapter 6: Carbon Capture, Transport and Storage (PDF 419 KB) 

o Chapter 7: Set-Up Parameters and Rules (PDF 108 KB) 

o Chapter 8: Financial Assumptions (PDF 135 KB) 

o Chapter 9: Coal (PDF 1.31 MB) 

o Chapter 9: Appendix 9-3 (Excel 149 KB) | Appendix 9-4 Data (Excel, 665 KB) | 

Appendix 9-4 Graphics (PDF 166 KB) 

o Chapter 10: Natural Gas (PDF 1.48 MB) 

o Chapter 11: Other Fuels and Fuel Emission Factors (PDF 272 KB) 

o Chapter 11: Appendix 11-1 (Excel 283 KB) 

National Electric Energy Data System (NEEDS) v.4.10_FTransport

The National Electric Energy Data System or "NEEDS" database contains the generation unit 

records used to construct the "model" plants that represent existing and planned/committed units 

in EPA modeling applications of IPM. NEEDS includes basic geographic, operating, air 

emissions, and other data on these generating units.

 Download NEEDS v.4.10_FTransport

 NEEDS v.4.10 User Guide (PDF 177 KB) 

IPM Results: IPM Run Files and Parsed Files

Download IPM run files and parsed files for the Cross-State Air Pollution Rule analysis using 

the links in the table below. Click on the IPM run name in the first column of the table below to 

download a file. The files are posted in one of two formats, a zipped archive or an excel 

spreadsheet, and contain the following:

 Detailed IPM input and output files (i.e., .DAT, System Summary Report, .RPE, .CAR, 

and TAC files) for the listed runs. Guide to content of IPM input and output files (PDF 

123 KB) 

IPM Run Files and Parsed Files*

IPM Run Name IPM Run Description

TR_Base_Case_Final

(Zip 4.2 MB) 

Base case model run, which includes the national 

Title IV SO2 cap-and-trade program; NOX SIP Call 
regional ozone season cap-and-trade program; and 

settlements and state rules. This run represents 

conditions without the proposed CSAPR and without 

the rule it replaces (CAIR). 

TR_Remedy_Final

(Zip 1.2 MB) 

This run models the air quality-assured trading final 

remedy described in the CSAPR Preamble.

*On August 2, 2011, EPA updated these web files to include additional information on projected 

regional wholesale electricity prices and unit-level electricity generation. While these are outputs 

of the IPM model, EPA did not rely on these specific parameters in its promulgation of the 

Cross-State Air Pollution Rule. However, in response to subsequent public interest, EPA is 

making these outputs available in these updated files.

IPM Analyses of the Proposed Transport Rule

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Last updated on Monday, May 07, 2012

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