Science & Technology
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National Electric Energy Data System (NEEDS)
Find information on EPA's National Electric Energy Data System (NEEDS) database including basic geographic, operating, air emissions, and other data on these generating units.
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Power Sector Modeling
Detailed documentation of EPA’s application of the Integrated Planning Model (IPM) to analyze the business-as-usual air emissions projections and incremental impact of policies on the U.S. electric power sector.
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Analysis of the Final MATS Risk and Technology Review (RTR)
IPM analyses of the Proposed MATS Risk and Technology Review (RTR)
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Results using Pre-IRA 2022 Reference Case
Download EPA's IPM v6 including documentation, overview, System Summary Report, .DAT, .RPE, .RPT files, Gas Report, State Level Emissions, Generation and Heat Input Summary.
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Supporting Documentation of the 2015 Ozone NAAQS Actions
IPM analyses of the Good Neighbor Plan.
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Results using 2023 Reference Case
Download EPA's IPM v6 including documentation, overview, System Summary Report, .DAT, .RPE, .RPT files, Gas Report, State Level Emissions, Generation and Heat Input Summary.
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Emissions Trading
Learn about emissions trading programs, also known as cap and trade programs, which are market-based policy tools for protecting human health and the environment by controlling emissions from a group of sources.
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Electric Power Systems Partnership
The SF6 Emission Reduction Partnership for Electric Power Systems was a collaborative effort between EPA and the electric power industry to identify, recommend, and implement cost-effective solutions to reduce sulfur hexafluoride (SF6) emissions.
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SF6 Leak Monitoring Webcast
Overview of leak monitoring systems to identify SF6 emissions from high voltage electrical equipment.
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SF6 Gas Inventory Webcast
Overview of managing SF6 gas inventories.
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eGRID2018 Notes
Describes the data corrections made in eGRID2018v2.
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Petitions for Reconsideration Received for the CSAPR Update
EPA has received petitions for reconsideration of the Cross-State Air Pollution Rule Update for the 2008 Ozone NAAQS from the following stakeholders.
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Cross-State Air Pollution
The Cross-State Air Pollution Rule (CSAPR), requires states to significantly improve air quality by reducing power plant emissions that contribute to ozone and/or fine particle pollution in other states.
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Community Multiscale Air Quality (CMAQ) Model Impact Statement
This impact statement provides information on the Multiscale Air Quality (CMAQ) Model to can be used to improve understanding of air quality management issues.. .
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Conformity Adequacy Review: Region 1
Resources are for air quality and transportation government and community leaders. Information on the adequacy/inadequacy of state implementation plans (SIPs) in EPA Region 1 (CT, ME, MA, NH, RI, VT) is provided here.
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Responses to 40 CFR Part 75 Petitions - 2015
Find responses to petitions submitted by affected units subject to 40 CFR Part 75 in 2015.
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Responses to 40 CFR Part 75 Petitions - 2010
Find responses to petitions submitted by affected units subject to 40 CFR Part 75 in 2010.
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Virtual and Field Audit Resources
The Continuous Emissions Monitoring System (CEMS) Field Audit Manual details recommended procedures for conducting a field audit of a Part 75 monitoring system. Included are tools can use to prepare for an audit.
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Responses to 40 CFR Part 75 Petitions - 2007
Find responses to petitions submitted by affected units subject to 40 CFR Part 75 in 2007.
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Power Plants and Neighboring Communities Graphs
Graphs that display the relationship between power plants and the surrounding communities