2020 National Emissions Inventory
The National Emissions Inventory (NEI) provides emissions data for criteria air pollutants, hazardous air pollutants, and selected greenhouse gases from facilities and other sources across the country (see FAQ). These data are available at both the facility level and as countywide totals. Below are the main 2020 NEI data products and supporting resources available on this page.
2020 NEI and Trends Report
This interactive report provides basic information for the public to learn about and explore the 2020 NEI.
Online Data Retrieval Tool
This tool allows users to filter and download custom lists of facilities and county total emissions data.
Detailed Data, Other Summaries, Data Queries, and Facility Mapping
For advanced users, includes the most detail (large) database files, zipped modeling input files, smaller premade sector summaries, Tier 1 queries, sector queries, and single state point source queries and maps.
2020 Emissions Modeling Platform
The emissions modeling platform provides emissions estimates and related data used to support air quality modeling.
Documentation & Resources
2020 Nonpoint Wagon Wheel Supporting Data
- 2020 Nonpoint Wagon Wheel
- EIS Augmentation Datasets (including HAP augmentation, PM augmentation, PM speciation, Chromium speciation, HAP Aug profile name xref)
- Wagon Wheel Emission Factor Compendium (xlsx)
2020 Commercial Marine Vehicle Documents
- 2020 C1 and 2 CMV Emissions Inventory Documentation (pdf)
- 2020 C3 Marine Emissions Tool Documentation (pdf)