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Optimization Model for Reducing Emissions of Greenhouse Gases from Automobiles (OMEGA)
EPA’s Optimization Model for Reducing Emissions of Greenhouse Gases from Automobiles (OMEGA) is a free, desktop computer application which estimates the technology cost for automobile manufacturers to achieve variable fleet-wide levels of vehicle greenhouse gas (GHG) emissions.
OMEGA is designed to operate on a single computer. The downloadable installation file below contains the application executable file and five sample Microsoft Excel input files. In addition, a zip file contains the input files which were used to determine the costs of EPA’s Notice of Proposed Rulemaking (NPRM) to regulate greenhouse gases from automobiles. The model documentation provides details on the model’s input files, algorithms, and output files. A copy of the peer review report and EPA’s response to those comments can also be found in the following section.
To request a CD of this software instead of downloading it or if you have trouble with accessibility of this software, please contact:
Assessment and Standards (ASD) Hotline at:
734-214-4636 or
Email: ASDInfo@epa.gov
OMEGA 1.0 Software & Documentation
- Model Documentation (PDF) (54 pp, 308K, EPA420-B-09-035) This document contains descriptions of OMEGA’s general methodology, the input and output files, and algorithms.
- Installation File (MSI) (1.13MB) This file contains OMEGA’s application executable file, and five sample input files and a Benefits Calculations file.
- Input files used in EPA’s NPRM (ZIP) (1MB) This zip file contains 28 Excel files which were used to calculate manufacturers’ technology cost in EPA’s NPRM.
- Peer Review Report and Response to Comments (PDF) (156 pp, 2MB, EPA-420-R-09-016) This document contains the Peer Review Report, which is comprised of comments from three separate peer reviewers, and also EPA’s response to comments.
- OMEGA Source Code (ZIP) (2.5M)