Get Air Emissions Data

NEI-Based Data by Inventory Year

Emissions data are available for every inventory year, though the available products may vary. The full National Emissions Inventory (NEI), which includes point, nonpoint, onroad, and nonroad emissions, is developed every three years. For the years between triennial NEI releases, emission modeling platforms and related data summaries are available, including a point facility inventory summary.

The Facility Summaries by Pollutant files are too large to open in Microsoft Excel. You may be able to import the CSV files into Microsoft Access, or use another approach such as splitting the file into smaller parts before importing.