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Power Sector Modeling

Power Sector Modeling provides information and documentation on EPA’s power sector modeling resources and regulatory applications. In the last few years, EPA has engaged with state air quality planning officials, power company representatives, regional transmission organizations, federal and research organizations, and others working on power sector modeling who have provided input on the data, assumptions, and structure of EPA's power sector analytical tools.

EPA uses the Integrated Planning Model (IPM) to analyze the projected impact of environmental policies on the electric power sector. In addition to IPM, EPA uses additional complementary analytical tools and approaches informing power sector projections and regulatory actions.

EPA’s guidance regarding electricity generating unit (EGU) emission inventories, key modeling/projection input assumptions, appropriate data sources, and general methodological criteria is available in Section 5.3.1 of the Air Emissions Inventory Guidance, including references to state-developed resources like ERTAC and NE-MARKAL. 

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What's New

  • October 14, 2022 - Latest version of NEEDs
  • September 20, 2021 - EPA’s 2021 Summer Reference Case

Modeling Resources

  • National Electric Energy Data System v6 (NEEDS)
  • EPA's Power Sector Modeling Platform v6 using IPM
    • Results Viewer
    • Previous Versions
  • Retrofit Cost Analyzer
  • Energy Resources for State, Local, and Tribal Governments
  • Clean Air Markets Data Resources

Regulatory Analysis

  • 2015 Ozone NAAQS Actions
  • Proposed Good Neighbor Plan
  • Final Revised CSAPR Update Rule
  • Proposed Revised CSAPR Update Rule
  • Final ACE Rule
  • Proposed ACE Rule
  • Final CSAPR Close-Out
  • Proposed CSAPR Close-Out
  • Notice of Data Availability: Preliminary Interstate Ozone Transport Modeling Data for the 2015 Ozone NAAQS
  • The Cross-State Air Pollution Rule Update
  • The Clean Power Plan
  • Previous Power Sector Modeling Regulatory Applications

Related Tools and Data

  • Clean Air Status and Trends Network(CASTNET)
  • Air Quality Monitoring
  • Emissions Inventories
  • Power Plants and Neighboring Communities
    • EJScreen
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on February 1, 2023
United States Environmental Protection Agency

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