An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Air Emissions Inventories

2014 National Emission Inventory (NEI) Report

This report is an overview of the air pollutant emissions in the 2014 National Emissions Inventory (NEI) Ver 1.0 (v1) (2014 NEI v1) published by the US EPA on September 30, 2016.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.