U.S. Emissions

U.S. net emissions declined 13 percent from 2005 to 2019 due to a range of market- and policy-related factors. Electric power sector emissions fell 33 percent (through 2019) as a result of a shift from coal to natural gas, increased use of renewable energy, and a leveling of electricity demand. Energy consumption dropped by more than 7 percent in 2020 as a result of the COVID-19 pandemic; year-over-year transportation sector emissions fell 15 percent, while industrial and power sector emissions fell by around 11 percent.

C2ES analysis projects that by 2025, U.S. emissions could be 14 percent to 18 percent below 2005 levels, far short of what is needed to address climate change.

Trends in U.S. Greenhouse Gas Emissions, 1990–2019

U.S. Greenhouse Gas Emissions by Gas and Sector, 2019

Energy-Related Carbon Dioxide Emissions by Sector (MMtCO2), 2000–2020

Trends in CO2 Emissions in the U.S. Power Sector, 2000–2020

Trends in CO2 Emissions Across All Sectors by Fuel Type, 2000 - 2020