Climatiq
source

U.S. Government (EPA)

5214 Factors5214 Factor
82 Regions82 Region
1836 Activities1836 Activity

About U.S. Government (EPA)

The Environmental Protection Agency (EPA) is the United States government agency that provides regularly updated default emission factors for organisational greenhouse gas reporting in the United States.

Visit U.S. Government (EPA) website

Datasets from U.S. Government (EPA)

The Emissions & Generation Resource Integrated Database (eGRID)
GHG Emission Factors Hub
Supply Chain Factors Dataset (commodities)
Supply Chain Greenhouse Gas Emission Factors v1.2
Supply Chain Greenhouse Gas Emission Factors v1.3
Energy Star - Portfolio Manager
SmartWay Carrier Performance Ranking
DATASET

The Emissions & Generation Resource Integrated Database (eGRID)

PropertyValue
Description
The Environmental Protection Agency (EPA) is the United States government agency that provides regularly updated default emission factors for organisational greenhouse gas reporting in the United States.
Source type
Governmental
Original dataset URLURL
Year released
2020-2025
Geography
US
Sector
Type of data
Activity-based
Emission results
CO2e - CO2 - CH4 - N2O
Data Transformation
The source reports emissions in lb/MWh, which have been converted to kgCO2e/kWh to ensure consistency.

License

PropertyValue
Type of license
US Public Domain License
License URLURL

Data quality

PropertyValue
Data quality assurance
Vetted by Climatiq. For further information on data quality assurance, see: https://www.climatiq.io/methodology#Data-Quality
Quality flag(s)
NA

Methodology

PropertyValue
IPCC AR method
  • AR4
  • AR5
LCA boundary
  • electricity_generation
  • transmission_and_distribution
Scope applicability
  • 2
Emissions breakdown
  • CH4
  • CO2
  • N2O
  • Total (CO2e, AR4)
  • Total (CO2e, AR5)
Methodology description

The Emissions & Generation Resource Integrated Database (eGRID) is the US EPA's comprehensive source of data on the environmental characteristics of the US electric power sector, most commonly used for estimating indirect emissions from electricity purchases, GHG inventories, and carbon footprinting of grid-supplied electricity.

eGRID aggregates mass emissions and emission rates for CO₂, CH₄, N₂O, NOₓ, SO₂, and other pollutants for each electricity generating unit. Aggregated emission rates are calculated by summing emissions from all sources in a given area and dividing by total electricity generated — making them production-based rates that reflect the emissions intensity of electricity generated in that area.

For carbon footprinting and GHG accounting, EPA recommends using output emission rates at the eGRID subregion level, as subregions replicate the physical constraints of the electricity grid and minimise the effect of electricity transfers between areas. eGRID also provides emission rates at state, balancing authority, NERC region, and national levels.

Transmission and distribution (T&D) losses are calculated by Climatiq using the grid gross loss percentage provided by the source.

For full details, see the eGRID detailed data page: https://www.epa.gov/egrid/detailed-data.

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