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).