On December 6, 2018, EPA proposed revisions to the greenhouse gas standards for new, modified, and reconstructed coal-fired electric utility generating units.  EPA's power sector analysis for this proposal uses EPA’s Power Sector Modeling Platform v6 using IPM.

Supplemental Documentation for Analysis of the Proposed Rule

For the power-sector analysis of the proposed rule, the EPA used an earlier version of the model that is slightly different than the version documented on EPA’s Power Sector Modeling Platform v6 using IPM website. To learn more about these differences, see the Incremental Documentation for EPA Platform v6 used for the Proposed ACE Rule. This supplemental documentation complements more comprehensive modeling documentation available at EPA’s Power Sector Modeling Platform v6 using IPM.

Below is the version of NEEDS used for the analysis of the proposed rule.

• NEEDS v6 Database for Proposed ACE Rule (1 pg, 3 MB, rev: 03-12-2018)

IPM Run Files

Download IPM run files for the proposed 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 detailed IPM input and output files (i.e., .DAT, System Summary Report, .RPE, and RPT files) for the listed runs. More detailed information on the modeling framework, specific scenarios, assumptions, and other important details of the analysis can be found in the Economic Impact Analysis that accompanies the proposed rule.

• To facilitate the output visualization of the results, a Results Viewer(9 pp, 34 MB, Sept 10, 2018) is available to compare these different scenario projections and link them with historical data.