View source for Emissions & Generation Resource Integrated Database

{{infobox software
| name = Emissions & Generation Resource Integrated Database (eGRID)
| caption = eGRID2023
| developer = U.S. EPA
| latest release version = eGRID2023rev2
| latest release date = June 12, 2025
| website = https://www.epa.gov/egrid
}}

The '''Emissions & Generation Resource Integrated Database''' ('''eGRID''') is a comprehensive source of data on the environmental characteristics of almost all [[electric power]] generated in the United States.  eGRID is issued by the [[U.S. Environmental Protection Agency]] (EPA).

As of January 2025, the available editions of eGRID contain data for years 2023, 2022, 2021, 2020, 2019, 2018, 2016, 2014, 2012, 2010, 2009, 2007, 2005, 2004, and 1996 through 2000.  eGRID is unique in that it links air emissions data with [[Electricity sector of the United States|electric generation]] data for United States power plants.<ref>[http://www.epa.gov/cleanenergy/energy-programs/suca/resources.html EPA – Clean Energy – EE Action Plan<!-- Bot generated title -->]</ref>

== History ==
* eGRID2023 was released by EPA on January 15, 2025, eGRID2023rev1 was released on January 17, 2025, and eGRIDrev2 was released June 12, 2025. It contains year 2023 data. 
* eGRID2022 was released by EPA on January 30, 2024. It contains year 2022 data. 
* eGRID2021 was released by EPA on January 30, 2023.  It contains year 2021 data.
* eGRID2020 was released by EPA on January 27, 2022.  It contains year 2020 data.
* eGRID2019 was released by EPA on February 23, 2021.  It contains year 2019 data.
* eGRID2018 was released by EPA on January 28, 2020 and eGRID2018v2 was released on March 9, 2020.  It contains year 2018 data.
* eGRID2016 was released by EPA on February 15, 2018.  It contains year 2016 data.
* eGRID2014 was released by EPA on January 13, 2017.  It contains year 2014 data.
* eGRID2012 was released by EPA on October 8, 2015.  It is the 10th edition and contains year 2012 data.
* eGRID2010 Version 1.0 with year 2010 data was released on February 24, 2014.
* eGRID2009 Version 1.0, with year 2009 data was released on May 10, 2012.
* eGRID2007 Version 1.0 was released on February 23, 2011 and Version 1.1 was released May 20, 2011.
* eGRID2005 Version 1.0 was released in October 2008 and Version 1.1 was released in January 2009.
* eGRID2004 Version 1.0 was released in December 2006; Version 2.0 was released in early April 2007; and Version 2.1, was released in late April 2007 and updated for typos in May 2007. 
* eGRID2000 Version 1.0 was released in December 2002; Version 2.0 was released in April 2003; and Version 2.01 was released in May 2003.  (eGRID2000 replaced eGRID versions 1996 through 1998).
* eGRID1998 was released in March and September 2001.
* eGRID1997 was released in December 1999.
* eGRID1996 was first released in December 1998.

== Data summary ==
eGRID data include emissions, different types of emission rates, [[electricity generation]], resource mix, and heat input.  eGRID data also include [[power station|plant]] identification, location, and structural information.  The emissions information in eGRID include [[carbon dioxide]] (CO<sub>2</sub>), [[nitrogen oxides#NOx|nitrogen oxides]] (NO<sub>x</sub>), [[sulfur dioxide]] (SO<sub>2</sub>), [[Mercury (element)|mercury]] (Hg), [[methane]] (CH<sub>4</sub>), [http://www.epa.gov/nitrousoxide/scientific.html nitrous oxide] (N<sub>2</sub>O), and [[carbon dioxide equivalent]] (CO<sub>2</sub>e).  CO<sub>2</sub>, CH<sub>4</sub>, and N<sub>2</sub>O are [[greenhouse gases]] (GHG) that contribute to [[global warming]] or [[climate change]].  NO<sub>x</sub> and SO<sub>2</sub> contribute to unhealthy air quality and [[acid rain]] in many parts of the country.  eGRID's resource mix information includes the following [[fossil fuel]] resources: [[coal]], [[Fuel oil|oil]], [[Natural gas|gas]], other fossil; [[Nuclear fuel|nuclear resources]]; and the following [[renewable resources]]: [[hydroelectric]] (water), [[biomass]] (including [[biogas]], [[landfill gas]] and digester gas), [[wind power|wind]], [[solar power|solar]], and [[geothermal power|geothermal]].

eGRID data is presented as an [[Microsoft Office Excel|Excel]] workbook with data worksheets and a table of contents. The eGRID workbook contains data at the unit, [[Electrical generator|generator]], and [[power station|plant]] levels and aggregated data by state, power control area, eGRID subregion, [[North American Electric Reliability Corporation|NERC region]], and U.S.  The workbook also includes a worksheet that displays the grid gross loss (%). Beginning with eGRID2023, R programming language was used to develop eGRID. EPA has made the R scripts available for users to view and use. The R scripts can be [https://github.com/USEPA/egrid found on GitHub]. There is a [https://github.com/USEPA/egrid/blob/development/README.md readme] available in the repository to assist users in understanding the necessary scripts and documentation in creating eGRID.   

Additional documentation is also provided with each eGRID release such as, a [https://www.epa.gov/egrid/egrid-technical-guide Technical Guide (PDF)], [https://www.epa.gov/egrid/summary-data Summary Tables],  [https://www.epa.gov/egrid/maps eGRID subregion map (JPG)], [https://www.epa.gov/egrid/egrid-questions-and-answers#egrid6 NERC region Map (JPG)], and [https://www.epa.gov/egrid/download-data release notes (TXT)].  These files are available as separate downloadable files or all of them are contained in a [[Zip (file format)|ZIP]] file.  Similar files can be downloaded for a given year's eGRID release from EPA's [https://www.epa.gov/egrid eGRID website].
[[File:2019 egrid subregions.png|alt=eGRID subregions in 2019|thumb|eGRID Subregions, 2019]]
The primary data sources used for eGRID include data reported by electric generators to [http://www.epa.gov/airmarkets EPA’s Clean Air Markets Division] (pursuant to 40 CFR Part 75) and to the [[U.S. Energy Information Administration]] (EIA).

== Data use ==

eGRID data are used for carbon footprinting; emission reduction calculations; calculating indirect [[greenhouse gas emissions]] for [http://www.theclimateregistry.org The Climate Registry], [[California Climate Action Registry|the California Climate Action Registry]], California's Mandatory GHG emissions reporting program ([[Global Warming Solutions Act of 2006]], AB 32), and other GHG protocols;  were used as the starting point for the new international carbon emissions database, [http://carma.org CARMA].  EPA tools and programs such as [http://www2.epa.gov/energy/power-profiler Power Profiler], [http://www.energystar.gov/buildings/facility-owners-and-managers/existing-buildings/use-portfolio-manager Portfolio Manager], 
the [http://www.epa.gov/smm/wastewise/carboncalc.htm WasteWise Office Carbon Footprint Tool], the [http://www3.epa.gov/greenpower/pubs/calculator.htm Green Power Equivalency Calculator], the [http://www.epa.gov/climatechange/emissions/ind_calculator.html Personal Greenhouse Gas Emissions Calculator], 
and the [https://www.epa.gov/energy/greenhouse-gas-equivalencies-calculator Greenhouse Gas Equivalencies Calculator] use eGRID.  Other tools such as labeling/environmental disclosure, [[Renewable Portfolio Standard| Renewable Portfolio Standards (RPS)]] and [[Renewable Energy Certificate (United States)|Renewable Energy Credits (RECs)]] attributes are supported by eGRID data.  States also rely on eGRID data for electricity labeling (environmental disclosure programs), emissions inventories, and for policy decisions such as output based standards.  eGRID is additionally used by nongovernmental organizations for tools and analysis by the [[ICLEI|International Council for Local Environmental Initiatives (ICLEI)]], the [http://www.nescaum.org Northeast States for Coordinated Air Use Management (NESCAUM)], the [[Rocky Mountain Institute]], the [[Natural Resources Defense Council|National Resource Defense Council (NRDC)]], the [http://www.otcair.org Ozone Transport Commission (OTC)], [http://www.powerscorecard.org Powerscorecard.org], and the [http://www.ghgprotocol.org Greenhouse Gas Protocol Initiative].

In 2010, [https://obamawhitehouse.archives.gov/administration/eop/ceq/sustainability Executive Order 13514] was issued, requiring Federal agencies to “measure, report, and reduce their greenhouse gas emissions from direct and indirect activities.”
The [https://obamawhitehouse.archives.gov/sites/default/files/microsites/ceq/ghg_guidance_document_0.pdf Federal GHG Accounting and Reporting Guidance] accompanied this order and recommended using eGRID non-baseload emission rates to estimate the Scope 2 (indirect) emission reductions from renewable energy.

== See also ==

*[[Air pollution]]
*[[Cogeneration|Combined Heat and Power (CHP)]]
*[[Combined cycle]]
*[[Electric power]]
*[[Electric utility]]
*[[Electrical power industry]]
*[[Electricity generation]]
*[[External combustion engine]]
*[[Gas turbine#Gas turbines for electrical power production|Gas turbine]]
*[[Power station]]
*[[Renewable energy]]
*[[Steam turbine]]

== References ==
{{reflist}}

==External links==
*[http://www.eia.doe.gov/cneaf/electricity/page/data.html EIA’s Electricity Database Files]
*[http://ampd.epa.gov/ampd/ EPA’s Clean Air Markets - Data and Maps] {{Webarchive|url=https://web.archive.org/web/20131004215831/http://ampd.epa.gov/ampd/ |date=2013-10-04 }}
*[http://www2.epa.gov/energy EPA’s Clean Energy Homepage]
*[http://www3.epa.gov/climatechange/ EPA’s Climate Change Homepage]
*[https://www.epa.gov/egrid/egrid-technical-documents EPA's eGRID paper “How to use eGRID for Carbon Footprinting Electricity Purchases in Greenhouse Gas Emission Inventories”]
*[https://www.epa.gov/egrid EPA’s eGRID website] 
*[https://www.epa.gov/egrid/power-profiler#/ EPA's Power Profiler]
*[http://www.energystar.gov/buildings/facility-owners-and-managers/existing-buildings/use-portfolio-manager EPA’s Energy Star Portfolio Manager]
*[http://www2.epa.gov/airmarkets EPA's Acid Rain Program]
*[http://www3.epa.gov/chp/ EPA's Combined Heat and Power Partnership Homepage] 
*[https://obamawhitehouse.archives.gov/administration/eop/ceq/sustainability Executive Order 13514]
*[https://obamawhitehouse.archives.gov/sites/default/files/microsites/ceq/ghg_guidance_document_0.pdf Federal GHG Accounting and Reporting Guidance]
*[http://www2.epa.gov/energy/greenhouse-gas-equivalencies-calculator Greenhouse Gas Equivalencies Calculator]
*[http://www.nescaum.org Northeast States for Coordinated Air Use Management (NESCAUM)]
*[http://www.otcair.org Ozone Transport Commission (OTC)]
*[http://www3.epa.gov/carbon-footprint-calculator/ Personal Greenhouse Gas Emissions Calculator] 
*[http://www.powerscorecard.org Powerscorecard.org] 
*[http://www.wbcsd.org/ World Business Council for Sustainable Development]
*[http://www.wri.org/ World Resources Institute Homepage]

{{DEFAULTSORT:Emissions and Generation Resource Integrated Database}}
[[Category:Government databases in the United States]]
[[Category:Electric power]]
[[Category:Electric power companies of the United States]]
[[Category:Air pollution]]