Emission Factors:EPA GHG Emission Factors Hub
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Description
EPA's GHG Emission Factors Hub is a regularly updated set of activity-based emission factors used for organisational greenhouse gas reporting in the United States.
Metadata
Data Type: Activity-based
Publisher Type: National Government
Number of Factors: 4,670
Database Format: PDF and Excel sheet
Last Update: January 2025
Update Frequency: Annual
Cost: Free
Link: [EPA GHG Emission Factors Hub]
When to use
These factors should be used for calculating emissions resulting from activities such as:
- Stationary fuel combustion
- Mobile combustion of various fuels by various vehicle types across model years (including Transportation & Distribution methods)
- Purchased electricity
- Steam and heat usage
- Waste generated across end-of-life treatment methods
- Refrigerant leaks
To ensure regional alignment, these calculations should be done for activities that ideally occurred within the United States.
Limitations
- No Well-to-tank or other Upstream Emission Factors
- No Spend-based Emission Factors
- No Hotel Stay Emission Factors
- No Water Consumption or Treatment Emission Factors
- No Hybrid or Electric Vehicle Emission Factors
- No ticket class specifications for Air Travel Emission Factors
- No mass/volume Emission Factors for Purchased Goods and Services
Page Contributors: Christopher McClurg