The California Energy Policy Simulator (EPS) is a free and open-source computer model created by Energy Innovation LLC and Rocky Mountain Institute. It is adapted from software originally created by Energy Innovation LLC.

Model Download

The California Energy Policy Simulator may be used on this website through your web browser, or the full version may be downloaded to your computer by clicking the button below. Note that you will need to go through the steps explained on the EPS download page in order to install the required software and make use of the downloadable version of the model.

Download the California Energy Policy Simulator


Energy Innovation released a report, California Energy Policy Simulator Update: Earlier Action Delivers Social and Economic Benefits, which explores the current state policy mix and options for deeper decarbonization using the California EPS. Full documentation for the scenario assumptions can be found at the documentation links below.


Documentation of source data, assumptions, and policy scenarios is available here. Documentation of the model is available here. Documentation is not specific to any model version and therefore applies to both U.S. and California versions of the Energy Policy Simulator.

Other Information