


These files may be used to replicate the economy-wide analysis produced by the SAGE model and reported in the Regulatory Impact Analysis (RIA) for this action. These files are available in the docket for this action. For the user's convenience we are also providing them here. 

The analysis for this action uses the same SAGE replication code as used for the 2024 CPS Final action. The SAGE replication code for the 2024 CPS Final action may be found in the docket EPA-HQ-OAR-2023-0072 and on this website. See the instructions in the header of the first attachment of the SAGE analysis docket item for this action - EPA-HQ-OAR-2025-0124-0064_attachment_1 - for further explanation. 

The instructions in the header of the first attachment of the SAGE analysis docket item explains that the text needs to be copied to an .R file to run SAGE. For the user's convenience, we provide the .R script file to run the SAGE replication here (run_sage_cps_repeal_proposal.r). The script is materially the same as in the docket item attachment. 

For this action, SAGE uses results of the Integrated Planning Model (IPM) of the power sector. The RIA and accompanying references describe how IPM results are used in SAGE. The IPM results used in the SAGE analysis may be found in the docket EPA-HQ-OAR-2023-0072 and here: https://www.epa.gov/power-sector-modeling/analysis-final-greenhouse-gas-standards-and-guidelines