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Energy Resources for State and Local Governments

State CO2 Emissions from Fossil Fuel Combustion

This section provides state carbon dioxide (CO2) emission inventories from fossil fuel combustion, by end-use sector (commercial, industrial, residential, transportation, and electric power), in million metric tons of carbon dioxide (MMTCO2) from 1990 through 2017.

Download State Energy CO2 Data
The tables are available for viewing in Adobe Acrobat format or in Microsoft Excel format for spreadsheet analysis.

Nationally, carbon dioxide (CO2) emissions from fossil fuel combustion represented the largest source (76%) of total GWP–weighted emissions from all emission sources in 2017 (EPA 2019). Similarly, (CO2) emissions from fossil fuel combustion are the largest source of greenhouse gas emissions within a state. While emissions from other sources (i.e., Industrial Processes; Agriculture; Waste; and Land Use, Land-Use Change, and Forestry) are important and often significant within a state, they are not included in these estimates due to a lack of data availability, higher level of uncertainty in quantification methods, and smaller contribution to total emissions. 

EPA developed these state-level CO2 estimates using (1) fuel consumption data from the DOE/EIA State Energy Data 2017 Consumption tables1 and (2) emission factors from the Inventory of U.S. Greenhouse Gas Emissions and Sinks 1990-2017.


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1 SEDS sources motor gasoline estimates from the Federal Highway Administration (FHWA). FHWA has revised its methods of estimating non-highway use of motor gasoline for year 2015 and 2016 data, affecting how these data are allocated to each sector. While this revised methodology does not affect total petroleum consumed within SEDS, it does present compatibility issues with comparing 2015 and 2016 sectoral data across the time-series. EPA will update the time-series data to be consistent with future revisions of SEDS and other relevant sources such as the U.S. national greenhouse gas inventory as updates become available which address this issue. Click here for more information.