2014 National Emissions Inventory (NEI) Data
The data posted at this site will include only the latest version of the 2014 NEI. This webpage should not be used as a reference for past versions of the NEI and users wanting a record of data used in their analysis should archive and document those inventories to meet their own archival needs. Users should not assume that the data posted on this site will stay the same as the data they use at a given point in time.
SCC Data Files
The full detail data files for the Point, Onroad, Nonroad and Nonpoint data categories can be downloaded from the list below. Please note these files are larger than previous inventories and can be linked in Access if importing fails. These SCC data files do not include “events” data-wildfires and prescribed burning emissions. The events data can be found at the “Prescribed/Wildfires by Pollutant” link below under “Other Emissions Summaries”. To obtain a complete inventory total, please include these data in addition to the 4 SCC data files provided here.
- Point (ZIP CSV) (540.0 MB)
- Onroad (ZIP CSV) (65.5 MB)
- Nonroad (ZIP CSV) (598.0 MB)
- Nonpoint (ZIP CSV) (85.7 MB)
Additional Summary Data
Tribal Lands Emissions Summaries
Other Emissions Summaries
Files that can be used for air quality modeling can be found at the Air Emissions Modeling.