Emissions Intensity
Carbon emissions from electricity generation by fuel and state
U.S. Average
857
lbs CO₂/MWh
Cleanest State
Vermont
9 lbs CO₂/MWh
Most Carbon-Intensive
Wyoming
1,894 lbs CO₂/MWh
Emissions by Fuel Type
Average CO₂ emissions per megawatt-hour of electricity generated
Coal
2,230lbs/MWh
Petroleum
1,600lbs/MWh
Other Gas
1,200lbs/MWh
Natural Gas
910lbs/MWh
Solar
Zero
Wind
Zero
Hydro
Zero
Nuclear
Zero
Geothermal
Zero
Biomass
Zero
Cleanest Grids
Most Carbon-Intensive
Calculate Your Carbon Footprint
Estimate the emissions from your electricity usage based on your state's grid mix.
Methodology
Emissions factors are derived from the EPA eGRID database (2022). State-level rates reflect the weighted average emissions intensity based on each state's generation mix. Renewable and nuclear sources are counted as zero direct emissions. Biomass is considered carbon-neutral under the assumption that CO₂ released was previously absorbed by the plant material.