NEI

National Emissions Inventories

EPA is currently developing a National Emissions Inventory for the year 2020. This page also contains links to resources for EPA's 2017 and 2014 NEI data, including documentation and tools to browse and display the inventory data, as well as links to the 2016 Inventory Collaborative, which is developing a 2016 based emissions platform derived from the 2014 NEI for use in air quality planning.

2020 NEI Development

2020 Nonpoint Oil & Gas Estimation Tool (V1.1) (FTP folder on the EPA website)

This updated tool is built off the 2017 tool, but includes quite a few changes to input including year 2020 activity, emissions factor changes, basin factor changes etc.

2017 NEI Development

2017 NEI EPA website with resources for state, local and tribal agencies on NEI documentation and the Emissions Inventory System (EIS) Gateway

2017 Nonpoint Oil & Gas Estimation Tool (V1.2) (23 Mb *.zip file containing Tool documentation, Exploration and Production Access databases and supporting files)

Version 1.2 of the Oil & Gas Tool was released on October 17, 2019. The Tool contains EPA estimates of emissions from nonpoint oil and gas sources. States and other reporting entities can update EPA's estimates with their own emissions data. Note that emissions provided by states may differ from EPA's estimates. The OGEC Repository is providing access to the Tool and supporting documentation as a service to EPA, however the Committee is not responsible for its contents.

2017 Nonpoint Oil & Gas Estimation Tool (V1.1) (28 Mb *.zip file containing Tool documentation, Exploration and Production Access databases and supporting files)

Version 1.1 of the Oil & Gas Tool was released on July 19, 2019. The Tool contains EPA estimates of emissions from nonpoint oil and gas sources. States and other reporting entities can update EPA's estimates with their own emissions data. Note that emissions provided by states may differ from EPA's estimates. The OGEC Repository is providing access to the Tool and supporting documentation as a service to EPA, however the Committee is not responsible for its contents.

2017 Nonpoint Oil & Gas Estimation Tool (V1.0) (130 Mb *.zip file containing Tool documentation, Exploration and Production Access databases and supporting files)

The Oil & Gas Tool (V1) was released on April 11, 2019. The Tool contains EPA estimates of emissions from nonpoint oil and gas sources. States and other reporting entities can update EPA's estimates with their own emissions data. Note that emissions provided by states may differ from EPA's estimates. EPA is requesting comments on the Tool by May 1, 2019, and emissions updates by June 30, 2019. The OGEC Repository is providing access to the Tool and supporting documentation as a service to EPA, however the Committee is not responsible for its contents.

2016 Inventory Collaborative

Collaborative Wiki O&G Workgroup wiki for the 2016 Inventory Collaborative

LADCO 2016 Inventory Collaborative LADCO web page with links to resources to explore emissions data products for the 2016 modeling platform

2014 NEIv2: Documentation, Data, and Display

2014 NEI EPA website with 2014 NEI data summaries, data access, and the 2014 NEI TSD

2014 NEI Report EPA website with 2014 NEI data summaries, data access and data displays

2014 NEI Dashboard EPA website to display NEI summary data trends, aggregates by source sector, processes, and facility point sources; The displays allow for drill down to 60 EIS emissions sectors, criteria air pollutants (CAPs), and selected hazardous air pollutants (HAPs).

Emissions Inventory Charting Tool 2014 NEIv2 emissions inventory display tool; The full EPA NEIv2 summary dataset is accessible in the tool. The tool shows pollutant and source sector aggregates for 60 emissions sectors and 20 CAPs and 282 HAPs. The data supporting the tool were obtained from EPA's 2014 NEIv2 allsector data files. Example graphic generated by the tool are shown in the case studies, below.

2014 NEI Case Studies

Industrial Oil & Gas Production Sector: CAPs Top four CAPs from the Industrial Oil & Gas Production emissions sector. Pie charts show US breakdown by pollutant, and pollutant contribution in the county with the highest emissions for this pollutant/source sector combination (McKenzie County, North Dakota). Note, Carbon monoxide was excluded. The color range for the map on the left was adjusted to highlight low values.

Industrial Oil & Gas Production Sector: HAPs The maps below show county level totals for all 90 HAPs in the Industrial Oil & Gas Production emissions sector. The range for the map on the right was adjusted to highlight low values (the right hand panel shows all values over 1M lbs/year in the max color). The pie charts show the contribution of individual HAPs across the US, and at the county level for Webb County, Texas; McKenzie County, North Dakota; and North Slope County, Alaska. Note the change in chemical species composition from Webb County, Texas to North Slope County, Alaska, with majority contributions from aldehydes in Texas, and BTEX compounds in Alaska.

2017 NEI Development

2017 NEI EPA website with resources for state, local and tribal agencies on NEI documentation and the Emissions Inventory System (EIS) Gateway
2017 Nonpoint Oil & Gas Estimation Tool (V1.1) 130 Mb zip file containing Tool documentation, Exploration and Production Access databases and supporting files.
Version 1.1 of the Oil & Gas Tool was released on July 19, 2019. The Tool contains EPA estimates of emissions from nonpoint oil and gas sources. States and other reporting entities can update EPA's estimates with their own emissions data. Note that emissions provided by states may differ from EPA's estimates. The OGEC Repository is providing access to the Tool and supporting documentation as a service to EPA, however the Committee is not responsible for its contents.

2017 Nonpoint Oil & Gas Estimation Tool (V1) 130 Mb zip file containing Tool documentation, Exploration and Production Access databases and supporting files.
The Oil & Gas Tool (V1) was released on April 11, 2019. The Tool contains EPA estimates of emissions from nonpoint oil and gas sources. States and other reporting entities can update EPA's estimates with their own emissions data. Note that emissions provided by states may differ from EPA's estimates. EPA is requesting comments on the Tool by May 1, 2019, and emissions updates by June 30, 2019. The OGEC Repository is providing access to the Tool and supporting documentation as a service to EPA, however the Committee is not responsible for its contents.

2016 Inventory Collaborative

Collaborative Wiki O&G Workgroup wiki for the 2016 Inventory Collaborative
LADCO 2016 Inventory Collaborative LADCO web page with links to resources to explore emissions data products for the 2016 modeling platform

2014 NEIv2 Documentation, Data and Display

EPA's 2014 NEI Dashboard

2014 NEI EPA website with 2014 NEI data summaries, data access, and the 2014 NEI TSD.
2014 NEI Report EPA website with 2014 NEI data summaries, data access and data displays.
2014 NEI Dashboard EPA website to display NEI summary data trends, aggregates by source sector, process, and facility point source.
The displays allow for drill down to 60 EIS emissions sectors, criteria air pollutants (CAPs), and selected hazardous air pollutants (HAPs).
Emissions Inventory Charting Tool

EI Charting Tool 2014 NEIv2 emissions inventory display tool.
The full EPA NEIv2 summary dataset is accessible in the tool. The tool shows pollutant and source sector aggregates for 60 emissions sectors and 20 CAPs and 282 HAPs. The data supporting the tool were obtained from EPA's 2014 NEIv2 allsector data files. Example graphic generated by the tool are shown in the case studies, below.

2014 NEI Case Studies

Case Study Industrial Oil & Gas Production Sector; CAPs

Top four CAPs from the Industrial Oil & Gas Production emissions sector. Pie charts show US breakdown by pollutant, and pollutant contribution in the county with the highest emissions for this pollutant/source sector combination (McKenzie County, North Dakota). Note, Carbon monoxide was excluded. The color range for the map on the left was adjusted to highlight low values.
Case Study Industrial Oil & Gas Production Sector; HAPs

The maps below show county level totals for all 90 HAPs in the Industrial Oil & Gas Production emissions sector. The range for the map on the right was adjusted to highlight low values (the right hand panel shows all values over 1M lbs/year in the max color). The pie charts show the contribution of individual HAPs across the US, and at the county level for Webb County, Texas; McKenzie County, North Dakota; and North Slope County, Alaska. Note the change in chemical species composition from Webb County, Texas to North Slope County, Alaska, with majority contributions from aldehydes in Texas, and BTEX compounds in Alaska.