Analysis of the Final Greenhouse Gas Standards and Guidelines
Power Sector Modeling
(Using EPA’s Power Sector Platform 2023 using IPM)
On April 23, 2024, EPA finalized Greenhouse Gas Standards and Guidelines for Fossil Fuel-Fired Power Plants. For this action, EPA's Power Sector Modeling Platform 2023 using IPM was used.
Air quality modeling and corresponding analysis utilized these power sector emissions projections.
- NEEDS for IPM 2023 (rev 01-04-2024) (xlsx)
- 2023 Reference Case: Download IPM output files using the link below. Click on the IPM run name. The files are posted in one of two formats, a zipped archive or an excel spreadsheet, and contain detailed IPM input and output files (i.e., DAT, System Summary Report, RPE, and RPT files) for the listed run. Review the guide of IPM input and output files.
IPM Run Files
Download IPM run files for the final rules 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 detailed IPM input and output files (i.e., .DAT, System Summary Report, .RPE, and RPT files) for the listed runs. Review the below guide.
Guide to IPM Input/Output Files (pdf)
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 final rules.
| IPM Run Name | IPM Run Description |
|---|---|
|
Model run used for baseline analysis of the final rules. For details, please see Section 3 of the RIA. |
|
| Final Rule (zip) | Model run used for analysis of the final rules. For details, please see Section 3 of the RIA. |
| Alternative 1 (zip) | Model run used for analysis of alternative 1 to the final rules. For details, please see Section 3 of the RIA. |
| Alternative 2 (zip) | Model run used for analysis of alternative 2 to the final rules. For details, please see Section 3 of the RIA. |
| NSPS Only (zip) | Model run used for analysis of the impact of the proposed NSPS rule only. For details, please see Appendix D of the RIA. |
| Existing Source Only (zip) | Model run used for analysis of the impact of the proposed NSPS rule only. For details, please see For details, please see Appendix D of the RIA. |
| Baseline Sens Low Gas (zip) | Model run used for baseline gas price sensitivity. Please see IPM Sensitivity Runs Memo (sensitivity case) (pdf) . |
| Final Rule Sens Low Gas (zip) | Model run used for policy gas price sensitivity. Please see IPM Sensitivity Runs Memo (sensitivity case) (pdf) . |
| Baseline Sens High Demand (zip) | Model run used for baseline high demand sensitivity. Please see IPM Sensitivity Runs Memo (sensitivity case) (pdf) . |
| Final Rule Sens High Demand (zip) | Model run used for policy high demand sensitivity. Please see IPM Sensitivity Runs Memo (sensitivity case) (pdf) . |
| Baseline Sens Vehicle Rules (zip) | Model run used for baseline vehicle rules sensitivity. Please see IPM Sensitivity Runs Memo (sensitivity case) (pdf) . |
| Final Rule Sens Vehicle Rules MATS and ELG (zip) | Model run used for vehicle rules, MATS, ELG and Final Rules sensitivity. Please see IPM Sensitivity Runs Memo (sensitivity case) (pdf) . |
| Final Rule Sens Cofiring Only (zip) | Model run used for policy 40% co-firing sensitivity. Please see IPM Sensitivity Runs Memo (sensitivity case) (pdf) . |
| Final Rules Sens Carbon Rev 20 (zip) | Model run that includes the illustrative final rules scenario outlined in the RIA and also assumes a value of captured carbon of $20/ton post expiration of the 45(q) tax credits. |
| Final Rules Sens Carbon Rev 30 (zip) | Model run that includes the illustrative final rules scenario outlined in the RIA and also assumes a value of captured carbon of $30/ton post expiration of the 45(q) tax credits. |
| Final Rules Sens Carbon Rev 40 (zip) | Model run that includes the illustrative final rules scenario outlined in the RIA and also assumes a value of captured carbon of $40/ton post expiration of the 45(q) tax credits. |
All files including the corresponding version of NEEDS, IPM run files, incremental documentation, and support files used in the air quality modeling can also be found in the docket for this action.
For the EPA’s Power Sector Platform 2023 using IPM results and documentation, please see: