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Clean Air Markets

Analysis of the Proposed Cross-State Air Pollution Update Rule

On November 16, 2015, EPA proposed the Cross-State Air Pollution Update Rule.  EPA's power sector analysis for this proposal uses IPM v.5.14 and IPM v.5.15.

Supplemental Documentation for the Proposed Cross-State Air Pollution Update Rule

To learn more about several modeling assumptions used as part of EPA's power sector analysis for this proposal using the EPA v.5.15 Supplemental Documentation for the Clean Power Plan. The assumptions described in this supplemental documentation were also used for the analysis of the proposed CSAPR Update Rule.

This supplemental documentation complements more comprehensive modeling documentation available at EPA's Base Case v.5.14 using IPM and EPA's Base Case v.5.15 using IPM.

IPM Run Files

Download IPM run files for the proposed CSAPR Update Rule 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:

  • More detailed information on the modeling framework, specific scenarios, assumptions, and other important details of the analysis can be found in the Regulatory Impact Analysis that accompanies the proposed CSAPR Update Rule.
  • Detailed IPM input and output files (i.e., .DAT, System Summary Report, .RPE, .CAR, and TAC files) for the listed runs. Review the guide of IPM input and output files for IPM v.5.14 and IPM v.5.15.
IPM Run Name IPM Run Description
IPM v5.14 EPA Base Case for the CSAPR Update Rule(19 pp, 102 MB) Base case model run, including the national Title IV SO2 cap and trade program; NOx State Implementation Plan (SIP) Call regional ozone season cap and trade program; Mercury and Air Toxics Standards (MATS); the Cross-State Air Pollution Rule; and settlements and state rules through 2014 impacting SO2, NOX, directly emitted PM and CO2.
IPM v5.15 EPA Base Case for the CSAPR Update Rule(19 pp, 167 MB) Base case model run, including the national Title IV SO2 cap and trade program; NOx State Implementation Plan (SIP) Call regional ozone season cap and trade program; Mercury and Air Toxics Standards (MATS); The Clean Power Plan; The Cross-State Air Pollution Rule (CSAPR); and settlements and state rules through 2014 impacting SO2, NOX, directly emitting PM and CO2.
IPM v5.14 Illustrative Control Case(19 pp, 102 MB) This run assumes emission control levels in upwind states at the stringency level considered in the proposed Cross-State Air Pollution Update Rule, to inform air quality modeling projections.
IPM v5.15 Proposed CSAPR Update Rule(19 pp, 167 MB) This run models the State Budgets proposed in the proposed Cross-State Air Pollution Update Rule Preamble and informs the RIA for benefit analysis
IPM v5.15 $1,300 Per Ton EGU Cost Threshold Assessment(19 pp, 168 MB) This run evaluates EGU NOX reduction potential at a uniform cost threshold of $1,300 per ton.  This run was used to develop the proposed emissions budgets.