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Clean Air Markets

EPA Power Sector Modeling

This area provides information and documentation on EPA’s application of the Integrated Planning Model (IPM) to analyze the impact of air emissions policies on the U.S. electric power sector. EPA has used multiple iterations of the IPM model in various analyses of regulations and legislative proposals. For the development of its latest power sector modeling platform, EPA has increased its external engagement with state air quality planning officials, power company representatives, regional transmission organizations, and others who have provided input on the data, assumptions, and structure of EPA's Power Sector Modeling Platform v.5.14.

  • EPA’s Power Sector Modeling Platform v.5.13
    • This new modeling platform (v.5.13) incorporates important structural improvements and data updates with respect to the previous version (v.4.10). A new version number (moving from v.4 to v.5) indicates a substantial change to Base Case architecture. Changing the portion of the version name after the ‘dot’ (moving from .10 to .13) indicates the calibration of the model to more recent information from a particular iteration of the Energy Information Agency's (EIA) Annual Energy Outlook (AEO), in this case AEO 2013.

General Purpose of EPA Power Sector Modeling

EPA uses the Integrated Planning Model (IPM) to analyze the projected impact of environmental policies on the electric power sector in the 48 contiguous states and the District of Columbia. Developed by ICF Consulting, Inc. and used to support public and private sector clients, IPM is a multi-regional, dynamic, deterministic linear programming model of the U.S. electric power sector. It provides forecasts of least-cost capacity expansion, electricity dispatch, and emission control strategies for meeting energy demand and environmental, transmission, dispatch, and reliability constraints. IPM can be used to evaluate the cost and emissions impacts of proposed policies to limit emissions of sulfur dioxide (SO2), nitrogen oxides (NOx), carbon dioxide (CO2), hydrogen chloride (HCl), and mercury (Hg) from the electric power sector.

Among the factors that make IPM particularly well suited to model multi-emissions control programs are (1) its detail-rich representation of emission control options encompassing a broad array of retrofit technologies along with emission reductions through fuel switching, changes in capacity mix and electricity dispatch strategies; and (2) its ability to capture complex interactions among the electric power, fuel, and environmental markets.

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