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Energy Policy Simulator

Energy Policy Simulator

The Energy Policy Simulator (EPS) is an open-source model for estimating the environmental, economic, and human health impacts of hundreds of climate and energy policies. EPS offers unparalleled accessibility to the model through an easy-to-use web interface that allows non-technical users to model their own policy scenarios.

Supported by Bloomberg Philanthropies and in partnership with Energy Innovation, RMI is developing state-level versions of the EPS to make robust modeling tools and insights freely available to a diverse group of stakeholders including advocates, policymakers, and researchers.

In each state where the EPS becomes available, RMI and Energy Innovation publish insights and conduct stakeholder engagement to support use of the tool and drive focus on the highest impact policies that can bring emissions down in line with limiting atmospheric warming to 1.5°C. To date, the EPS is available in five states.

Click on any state in dark green below to view the simulator.

State level progress throughout the United States Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia West Virginia Wisconsin Wyoming District of Columbia District of Columbia
  • Public
  • In Development
  • TBD


California, Oregon, and Texas are being developed and maintained by Energy Innovation and other partners. All other states are co-developed by Energy Innovation and RMI.

Why It Matters

State-level policy is critical to driving emissions reductions, but stakeholders often lack access to the analytical resources to quickly evaluate the impact of broad policy packages. The EPS empowers practitioners to interactively design policy scenarios that correspond to each state’s unique context, and delivers robust, granular sector and sub-sector insights in a user-friendly interface.

The EPS also supplies key insights on co-benefits to support advocates and policymakers in making the case for ambitious climate policy action. RMI is committed to support those working on state policy with interactive and comprehensive modeling to provide clarity about the impact of policy options.

More about the EPS

The EPS allows the user to control a large variety of policies that affect energy use and emissions in every major sector of the economy including transportation, electricity supply, buildings, industry, agriculture, and land use. It also includes various smaller components, such as hydrogen supply, district heat, waste management, and geoengineering. The model reports outputs at annual intervals and provides numerous outputs, including:

  • Emissions of 12 different pollutants (CO2, nitrogen oxides [NOx], sulfur oxides [SOx], fine particulate matter [PM2.5], and eight others), as well as carbon dioxide equivalent (CO2e, a measure of the global warming potential of various pollutants)
  • Direct cash flow (cost or savings) impacts on government, non-energy industries, labor and consumers, and five energy-supplying industries
  • Impacts on jobs, GDP, and employee compensation, as a whole or disaggregated into 36 economic categories
  • Premature mortality (deaths) and 10 other health-related outcomes avoided thanks to reduced primary and secondary particulate pollution
  • The composition and output of the electricity sector (e.g., capacity and generation from coal, natural gas, wind, solar, etc.)
  • Vehicle technology market shares and fleet composition (electric vehicles, etc.)
  • Energy use by fuel type from various energy-using technologies (specific types of vehicles, building components, etc.)
  • Breakdowns of how each policy within a policy package contributes to total abatement and the cost-effectiveness of each policy (e.g., wedge diagrams and cost curves)
  • Fuel imports and exports, and associated expenditures or revenues

In addition to the state-level EPS models mentioned above, Energy Innovation has published the Energy Policy Simulator for eight countries including the United States, China, and India. Detailed documentation of the EPS is available here.