Science & Technology
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eGRID PM2.5 Methodology
These documents provide additional materials for eGRID.
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Webinar: SF6-Free Alternative Medium and High Voltage Circuit Breakers - Vacuum Technology
Electric Power Systems Partnership utilities offered testimonials and discussed their experiences installing and using SF6-free vacuum breaker technology in their transmission and distribution infrastructure.
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Webinar: SF6 Gas Storage Inventories - Strategies for Tracking
Partner utilities discussed how they manage their SF6 inventory by sharing stories on how they track their SF6 gas inventory and cylinder management at their substations.
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Methods for Calculating CHP Efficiency
Understand the two methodologies for calculating CHP efficiency: total system efficiency and effective electrical efficiency.
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Analysis of the Proposed Greenhouse Gas Standards and Guidelines
IPM analyses of the Proposed NSPS and Existing Source Rules
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Results using Post-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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Results using EPA’s Power Sector Modeling Platform v6 - Summer 2021 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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Documentation for Base Case v.5.13: Generating Resources
View Chapter 4 of the documentation for EPA Power Sector Modeling Platform v.5.13, including associated attachments.
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Integrated Planning Model (IPM) Run Files for Supporting Scenarios
View links to download IPM run files for the scenarios that support development of the Clean Power Plan proposal.
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Analysis of the Final Greenhouse Gas Standards and Guidelines
IPM analyses of the Proposed NSPS and Existing Source Rules
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Previous Versions of EPA Platforms Using IPM
Find previous versions of EPA's Integrated Planning Model (IPM) including versions 5.16; 5.15; 5.14; and 5.13.
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Wet Deposition Maps
Annual average wet deposition estimated with the TDep Measurement Model Fusion method using the concentrations in precipitation and precipitation amounts measured by NADP/NTN and the modeled precipitation amounts estimated by the PRISM model.
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Responses to 40 CFR Part 75 Petitions - 2011
Find responses to petitions submitted by affected units subject to 40 CFR Part 75 in 2011.
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Responses to 40 CFR Part 75 Petitions - 2017
Approval for an alternative data substitution methodology.
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Responses to 40 CFR Part 75 Petitions - 2021
The Agency response to the Sarpy County petition request..
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Eliminating Bias in Monitoring Systems
Learn how to eliminate bias from monitoring systems by instituting appropriate installation, operation, and quality assurance procedures. Provides links to download An Operator's Guide to Eliminating Bias in CEM Systems.
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Nitrogen Dioxide (NO2) Primary Standards - Planning Documents from Current Review
Scientific and technical planning documents used to develop the current nitrogen dioxide primary national ambient air quality standard.
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Natural Gas STAR Partner Update Newsletters
Past issues of the Natural Gas STAR Program Partner Update newsletters.
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Methane Challenge Continuous Improvement - Equipment Leaks
Presentation from the April 2020 Methane Challenge webinar.
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Human Exposure Modeling - Other Models and Exposure Related Information
Human exposure modeling relates pollutant concentrations in the larger environmental media to pollutant concentrations in the immediate exposure media.