Hourly Energy Emission Factors for Electricity Generation in the United States

Metadata Updated: August 29, 2017

Emissions from energy use in buildings are usually estimated on an annual basis using annual average multipliers. Using annual numbers provides a reasonable estimation of emissions, but it provides no indication of the temporal nature of the emissions. Therefore, there is no way of understanding the impact on emissions from load shifting and peak shaving technologies such as thermal energy storage, on-site renewable energy, and demand control.

This project utilized GridViewTM, an electric grid dispatch software package, to estimate hourly emission factors for all of the eGRID subregions in the continental United States. These factors took into account electricity imports and exports across the eGRID subregion boundary, and included estimated transmission and distribution (T) losses. Emission types accounted for included carbon dioxide (CO2), nitrogen oxides (NOx), and sulfur dioxide (SO2).Data reported as part of this project include hourly average, minimum, and maximum emission factors by month; that is, the average, minimum, and maximum emission factor for the same hour of each day in a month. Please note that the data are reported in lbs/MWh, where the MWh value reported is site electricity use (the actual electricity used at the building) and the pounds of emissions reported are the emissions created at the generator to meet the building load, including transmission and distribution losses. The demand profiles used to generate the data pertain to the following years: eastern interconnect - 2005; Electricity Reliability Council of Texas (ERCOT) - 2008; Western Electricity Coordinating Council (WECC) - 2008.

Access & Use Information

Public: This dataset is intended for public access and use. License: See this page for license information.

Downloads & Resources


Metadata Created Date August 29, 2017
Metadata Updated Date August 29, 2017

Metadata Source

Harvested from Energy JSON

Additional Metadata

Resource Type Dataset
Metadata Created Date August 29, 2017
Metadata Updated Date August 29, 2017
Publisher National Renewable Energy Laboratory
Unique Identifier https://openei.org/doe-opendata/dataset/b328f92b-3c91-49af-b08a-96852f9ebb25
Daniel Studer
Maintainer Email
Public Access Level public
Accessurl https://openei.org/doe-opendata/dataset/b328f92b-3c91-49af-b08a-96852f9ebb25/resource/8e640c8d-ae5d-4e6a-9316-a65f9befddc1/download/usmonthlyaveragehourlyemissionfactorsforaznmegridsubregion.csv
Bureau Code 019:20
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Data Quality True
Format text/csv
Harvest Object Id baeacea2-1886-4106-bfb5-4ae931a99538
Harvest Source Id 8d4de31c-979c-4b50-be6b-ea3c72453ff6
Harvest Source Title Energy JSON
Homepage URL http://www.nrel.gov/buildings/
License http://www.opendefinition.org/licenses/odc-by
Data Last Modified 2015-08-21T20:50:30Z
Program Code 019:000
Source Datajson Identifier True
Source Hash a7da3adc977f807394154094e0fc86f0ef8c9cc0
Source Schema Version 1.1
Spatial {"type":"Polygon","coordinates":-124.76249999999999,24.520609551635854,-66.93242833862308,24.520609551635854,-66.93242833862308,49.3845,-124.76249999999999,49.3845,-124.76249999999999,24.520609551635854}

Didn't find what you're looking for? Suggest a dataset here.