What are the greenhouse gas and air pollutant emissions factors for fuels and electricity?

The U.S. Energy Information Administration (EIA) publishes emission factors (or coefficients) for the amounts of certain gases that are released when fuels are burned and for when electricity is generated. EIA publishes emission factors for energy-related carbon dioxide (CO₂) emissions, which are CO₂ emissions related to energy consumption, and for U.S. electricity generation, as well as for sulfur dioxide (SO₂) and nitrogen oxides (NO_x) emissions related to U.S. electricity generation.

SO₂ and NO_x are criteria pollutants regulated by the U.S. Environmental Protection Agency (EPA) under the Clean Air Act and subsequent amendments. They are not greenhouse gases. The NO_x emissions and emissions factors published by EIA do not include emissions of nitrous oxide (N₂O), which is a greenhouse gas (GHG). The only GHG emissions estimates and GHG emissions factors that EIA publishes are for energy-related CO₂ emissions.

CO₂ emission factors/coefficients for:

• common fuels
• fuels used for electricity generation  (XLS)

Emission factors for electricity generation:

• CO₂, SO₂ and NO_x for electricity generated in each state for a specific year, in pounds per megawatthour, in Table 1 of individual State Electricity Profiles and averages for the United States

EPA is a source for emission factors for all greenhouse gases and other emissions factors.

Learn more:
How much carbon dioxide is produced per kilowatthour of U.S. electricity generation?
Where greenhouse gases come from

Last reviewed: August 21, 2024.

Other FAQs about Environment

• How do I convert between short tons and metric tons?
• Is ozone a greenhouse gas?
• How much of U.S. carbon dioxide emissions are associated with electricity generation?
• What are the energy-related carbon dioxide emissions from fossil fuels for the United States and the world?
• What are greenhouse gases and how do they affect the climate?
• Why do carbon dioxide emissions weigh more than the original fuel?
• Does EIA have forecasts or projections for energy production, consumption, and prices for individual states?
• How much carbon dioxide is produced when different fuels are burned?
• How much carbon dioxide is produced per kilowatthour of U.S. electricity generation?
• What are the greenhouse gas and air pollutant emissions factors for fuels and electricity?
• What are U.S. energy-related carbon dioxide emissions by source and sector?
• How much carbon dioxide is produced from U.S. gasoline and diesel fuel consumption?
• How many electric vehicles (EV) and EV charging stations are in the United States?