These data are an update to 2012-2020 Greenhouse Gas National- and State-Level Emission Totals by Industry (https://doi.org/10.23719/1529805). Data for 2021 and 2022 are added and are aligned with the 2012-2022 National-Level Greenhouse Gas Emission Totals by Industry (https://doi.org/10.23719/1531141). The Excel file contains a sheet with these totals by state and sector and year for each year in the time series along with metadata. Links are provided to the datasets in parquet format as generated by FLOWSA. Supporting metadata for each dataset is provided in the links. The primary emissions source was updated to use the EPA "Inventory of U.S. Greenhouse Gas Emissions and Sinks by State" 2024 report. The industry classifications were updated to use 2017 North American Industry Classification Codes. The code used to generate the datasets is available in the FLOWSA v2.0.5 tool (https://github.com/USEPA/flowsa/tree/v2.0.5). Values are given in total kilograms emitted for the given year, sector and location. Please see the related publication for more background information. https://cfpub.epa.gov/si/si_public_record_Report.cfm?dirEntryId=360507&Lab=CESER Validation: A supporting zip archive (GHG_by_Sector_and_State_2012-2022_validation.zip) is provided with results of various validation checks. Files with the pattern 'GHG_XXXX_rel_state_flow_comparison.csv' where 'XXXX' is the data year show totals by gas in a given year summed across states from this dataset ('state' field) compared to previously published national totals by gas produced from the national totals by industry ('national' field) for the same year. 'comp' is a ratio of 'state':'national'. All other fields are the same as those found in the FLOWSA flow-by-sector data format. Files with the pattern 'GHG_XXXX_rel_state_sector_comparison.csv' where 'XXXX' is the data year show the totals by gas by industry in a given year summed across states by gas and by industry compared to national totals by gas by industry by year. Fields have the same meaning as described above. Additional validation and log files of the associated FLOWSA model runs can be found on the EPA Data Commons (https://dmap-data-commons-ord.s3.amazonaws.com/index.html#flowsa/FlowBySector/) where the parquet and metadata files reside and have the same file names but end in .log and _validation.log. Please read more in the FLOWSA documentation to understand these files. Preferred Citation: Please cite this dataset as Young, Ben, Ingwersen, Wesley. 2025. 2012-2022 State-Level Greenhouse Gas Emission Totals by Industry. Data.gov. https://doi.org/10.23719/1532224. This dataset is associated with the following publication: Young, B., C. Birney, and W.W. Ingwersen. Dataset of 2012-2020 U.S. National- and State-Level Greenhouse Gas Emissions by Sector. Data in Brief. Elsevier B.V., Amsterdam, NETHERLANDS, 53: 110173, (2024).

These data represent annual greenhouse gas (GHG) emission totals by industry sectors and households for the total U.S. and by state, for years 2012 to 2020. Industry sectors are defined by North American Industry Classification System (NAICS) 2012 codes, with additional codes added for households and government. Emissions of 16 different GHGs, which are the same GHGs as reported in the U.S. GHG Inventory, are included. Values are given in total kilograms emitted for the given year, sector and location. Data are provided in two alternative formats, as Excel files and as Apache parquet files. The Excel files include: 1) GHGs by 114 aggregate level sectors by state and year, 2) GHGs by 114 aggregate level sectors by year for the U.S., and 3) GHGs by 540 detailed sectors by year for the U.S. The Excel files use a simplified version (not all fields included) of the Flow-by-Sector format (see link to format specification below). The parquet files align with the Excel files except are also separated by year, and provide the complete flow by sector format, where files with "state_m1" correspond to the aggregate level state datasets, files with "national_m1" correspond to the aggregate level national dataset, and files with "national_m2" correspond to the aggregate level state datasets, Standard metadata files in JSON format, and log and validation files in text format (with .log extension) are provided for each parquet file. The data are a product of updated sector attribution models that improve upon the National Greenhouse Gas Industry Attribution Model. The models used to generate the national aggregate and the state datasets are sector attribution models coded in the FLOWSA v2.0.0 tool (https://github.com/USEPA/flowsa/tree/v2.0.0). The national detailed datasets are developed with FLOWSA v2.0.1 (https://github.com/USEPA/flowsa/tree/v2.0.1).

The datasets comprise greenhouse gas (GHG) emission factors (Factors) for 1,016 U.S. commodities as defined by the 2017 version of the North American Industry Classification System (NAICS). The Factors are based on GHG data for 2022. Factors are given for all NAICS-defined commodities at the 6-digit level except for electricity, government, and households. Each record consists of three factor types as in the previous releases: Supply Chain Emissions without Margins (SEF), Margins of Supply Chain Emissions (MEF), and Supply Chain Emissions with Margins (SEF+MEF). One set of Factors provides kg carbon dioxide equivalents (CO2e) per 2022 U.S. dollar (USD) for all GHGs combined using 100-yr global warming potentials from IPCC 5th report (AR5) to calculate the equivalents. In this dataset there is one SEF, MEF and SEF+MEF per commodity. The other dataset of Factors provides kg of each unique GHG emitted per 2022 dollar per commodity without the CO2e calculation. The dollar in the denominator of all factors uses purchaser prices. See the supporting file 'Aboutv1.3SupplyChainGHGEmissionFactors.docx' for complete documentation of this dataset.

The datasets are comprised of greenhouse gas (GHG) emission factors (Factors) for 1,016 U.S. commodities as defined by the 2017 version of the North American Industry Classification System (NAICS). The Factors are based on GHG data representing 2019. Factors are given for all NAICS-defined commodities at the 6-digit level except for electricity, government, and households. Each record consists of three factor types as in the previous releases: Supply Chain Emissions without Margins (SEF), Margins of Supply Chain Emissions (MEF), and Supply Chain Emissions with Margins (SEF+MEF). One set of Factors (SupplyChainGHGEmissionFactors_v1.2_NAICS_CO2e_USD2021.csv) provides kg carbon dioxide equivalents (CO2e) per USD for all GHGs combined using 100 yr global warming potentials from the 4th IPPC Assessment report to calculate the equivalents. In this dataset there is one SEF, MEF and SEF+MEF per commodity. The other dataset of Factors (SupplyChainGHGEmissionFactors_v1.2_NAICS_byGHG_USD2021.csv) provides kg of each unique GHG emitted per dollar per commodity without the CO2e calculation. The dollar (USD) in the denominator of all factors uses purchaser prices in 2021 USD. See the supporting file 'Aboutthe2019v1.2SupplyChainGHGEmissionFactors.pdf' for complete documentation of this dataset.