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SAGE Model Documentation, version 2.1.1

SAGE is an applied general equilibrium model of the United States economy developed to aid in the analysis of environmental regulations and policies. It is an intertemporal model with perfect foresight, resolved at the sub-national level. This document provides technical details on the structure of the model.

Suggested Citation:

Marten, A., Schreiber, A., and Wolverton, A. 2024. SAGE Model Documentation (2.1.1). U.S. Environmental Protection Agency: https://www.epa.gov/environmental-economics/cge-modeling-regulatory-analysis.

  • SAGE Model Documentation version 2.1.1 (pdf) (1.4 MB, February 20, 2024)

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Last updated on September 12, 2025
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