An official website of the United States government.

We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

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.