2020 National Emissions Inventory (NEI) Data
The 2020 NEI includes air emissions sources of criteria air pollutants/precursors (CAPs), hazardous air pollutants (HAPs), and some greenhouse gas (GHGs) data (see FAQ). These data are available for many facilities nationwide, and on a countywide total basis.
2020 NEI Data and Documentation
- 2020 NEI Technical Support Document (TSD)
- Online 2020 NEI Data Retrieval Tool
- 2020 NEI and Trends Report
- Supporting Data and Summaries