Energy Policy Simulator Documentation

The Energy Policy Simulator (EPS) is a free and open-source computer model created by Energy Innovation LLC. You can use the model on this website through your web browser or, to use advanced features or modify its input data, you may download it and run it locally on your Mac or Windows PC.

Most Popular Pages

• EPS Video Series
• Download and Installation Instructions
• Web Interface Tutorial
• Version History

Full Documentation

Links to doc pages are followed by a number indicating the version of the EPS core software that was current at the time that doc page was most recently brought up-to-date (or checked and verified as up-to-date without requiring changes).

• Introduction - 3.0.0
• EPS Video Series - 3.0.0
• Model Overview
  • Architectural Design - 3.0.0
  • The Included Input Data Set - 3.0.0
  • Assumptions and Limitations - 3.0.0
  • How the EPS Avoids Double Counting Policy Effects - 3.1.0
  • Comparing Results to Reality or Other Models - 3.3.1
  • Evaluating Policy Packages’ Financial Effects - 3.0.0
  • Notes on Unit Conversion - 3.0.0
  • Remapping Subscript Elements - 3.0.0
• About the Web Interface
  • Web Interface Tutorial - 3.0.0
  • Output Graphs Available in the Web Interface - 3.4.0
  • Calculating Wedge Diagrams and Cost Curves - 3.3.1
  • Background and Technical Info about the Web Interface - 3.0.0
  • Web App Hosting and Integration into a Partner’s Website - 3.2.0
• Download and Installation Instructions - 3.0.0
• How to Conduct Analysis in Vensim Model Reader - 1.4.2
  • Running the Model and Setting Policy Levers - 1.1.2
  • Visualizing Output - 1.1.2
  • Creating and Managing Scenarios - 1.1.2
  • Adjusting Policy Implementation Schedules - 1.1.2
  • Troubleshooting Vensim Model Reader Issues - 1.1.2
• Model Component Descriptions - 3.0.0
  • Transportation Sector (main) - 1.3.1
  • Transportation Sector (cash flow) - 1.1.4
  • Electricity Sector (main) - 1.1.4
  • Electricity Sector (cash flow) - 1.1.4
  • Buildings Sector (main) - 1.1.4
  • Buildings Sector (cash flow) - 1.1.4
  • Industry & Agriculture Sector (main) - 1.1.4
  • Industry & Agriculture Sector (cash flow) - 1.1.4
  • District Heating - 3.0.0
  • Hydrogen Supply - 3.0.0
  • Land Use, Land Use Change, and Forestry - 3.0.0
  • Carbon Capture and Sequestration - 3.0.0
  • Geoengineering - 3.0.0
  • Fuels - 3.0.0
  • Endogenous Learning - 3.0.0
  • Cross-Sector Totals - 3.0.0
  • Input-Output Model - 3.0.0
  • Macroeconomic Feedbacks - 3.3.0
  • Cost Outputs - 3.0.0
  • Public Health and Additional Outputs - 3.3.0
  • Web Application Support Variables - 3.0.0
  • Debugging Assistance - 3.0.0
• Automated Analysis with Python Scripts - 3.0.0
  • Selecting Ouput Variables for a Python Script - 3.0.0
  • Logging Output for Multiple Scenarios- 3.0.0
  • Testing Policy Combinations - 3.0.0
  • Simulating a Cap-and-Trade Policy - 3.0.0

Policy Descriptions

Other Information

• Acknowledgement of Contributors and Reviewers - 3.0.0
• Contact Us - 3.0.0
• Software License and Image Credits - 3.0.0
• Version History - 3.3.0
  • Archived Model Releases - 3.0.0

Deprecated Documentation

The documentation pages listed below do not apply to the most recent version of the Energy Policy Simulator. However, they contain information that may be relevant if using an older software version (which may be the latest available version for some geographic regions, if a region has not updated to the latest software).

• Notes on Carbon Tax Revenue Use - written for 1.4.2, no longer applicable after 2.1.1
• Testing Policy Contributions to a Policy Package - The Python script uses the procedure from the EPS up through version 3.0.0. In EPS 3.1.0, a more refined procedure was introduced. To learn about the new procedure, see Calculating Wedge Diagrams and Cost Curves.