Supply Chain Greenhouse Gas Emission Factors for US Industries and Commodities factor set

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The US EPA has published a set of spend-based emission factors covering 394 commodities and 66 summary data types.

IBM® ESG Suite has managed this factor set since 2021 and factors are available back to 2018. The factor set is managed using both raw figures with 2018 USD, and an inflation adjusted version.
Note: Envizi ESG Suite will discontinue updates to this factor publication at the end of 2024. Envizi ESG Suite will release a new set of account styles that are linked to the v1.2 publication in Q4 2024.
Table 1. Supply Chain Greenhouse Gas Emission Factors for US Industries and Commodities factor set
Element Description
Website Supply Chain Greenhouse Gas Emission Factors for US Industries and Commodities
Citation Ingwersen, W. AND M. Li. Supply Chain Greenhouse Gas Emission Factors for US Industries and Commodities. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-20/001, 2020.
Upcoming publication date Factor set v1.0 originally published in July 2020 and an update v1.1.1 was last revised March 2023. Factors for 2024 have been updated using an inflation value of 24.43% from 2018.
Geographical coverage USA only
Data type coverage This Scope 3 spend-based factor set covers 394 commodity types, and 66 summary data types.
For a full list download the factors sets here:
Inflation Inflation values taken from US Bureau of Labor Statistics. Values for inflation were calculated by comparing January 2018 to January of the factor effective year.
Example factor calculation using inflation Refer to the following file to explore how Envizi ESG Suite calculates factors using inflation. Where:
  • Values in blue are taken from US EPA
  • GWP from AR4 is applied to raw values
  • Inflation from column F is applied to factors in yellow, columns M to Q
  • Values from other GHGs (column K) are included in the total CO2e (column G, M), but as the specific GHG is not specified, other GHGs are not stored in Envizi ESG Suite explicitly and are included only in the Total CO2e value.
  • Envizi ESG Suite treats factors without margins as the main direct factor (Total CO2e), and the margin component is loaded as the indirect factor. Emissions related to the margin or indirect component of the factor are found in the Emissions Performance dashboard, the Monthly Data Summary extract report and in the PowerBI monthly dataset.
Effective and published dates Since this publication was recently released, emission factor effective dates are the same as the published dates. This is likely to change with the upcoming publication as this factor set will use historical USD rates and emissions data to compile factors. For more information on effective and published dates, see Assigning factors.

Managed publications and effective periods

Table 2. Managed publications and effective periods
Factor source reference Effective from Effective to Published from Published to
Supply Chain Factors Dataset v1.0, Tab: 2016_Detail_Commodity, Citation: Ingwersen, W. AND M. Li. Supply Chain Greenhouse Gas Emission Factors for US Industries and Commodities. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-20/001, 2020.   31 Dec 2021   31 Dec 2021
Supply Chain Factors Dataset v1.1, Tab: 2016_Detail_Commodity, Citation: Ingwersen, W. AND M. Li. Supply Chain Greenhouse Gas Emission Factors for US Industries and Commodities. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-20/001, 2020. 01 Jan 2022 31 Dec 2022 01 Jan 2022 31 Dec 2022
Supply Chain Factors Dataset v1.1.1, Tab: 2016_Detail_Commodity, Citation: Ingwersen, W. AND M. Li. Supply Chain Greenhouse Gas Emission Factors for US Industries and Commodities. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-20/001, 2020. 01 Jan 2023   01 Jan 2023  
Supply Chain Factors Dataset v1.0, Tab: 2016_Detail_Commodity, Citation: Ingwersen, W. AND M. Li. Supply Chain Greenhouse Gas Emission Factors for US Industries and Commodities. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-20/001, 2020. Inflation adjustment = 0.0%   31 Dec 2018   31 Dec 2018
Supply Chain Factors Dataset v1.0, Tab: 2016_Detail_Commodity, Citation: Ingwersen, W. AND M. Li. Supply Chain Greenhouse Gas Emission Factors for US Industries and Commodities. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-20/001, 2020. Inflation adjustment = 1.55% 01 Jan 2019 31 Dec 2019 01 Jan 2019 31 Dec 2019
Supply Chain Factors Dataset v1.0, Tab: 2016_Detail_Commodity, Citation: Ingwersen, W. AND M. Li. Supply Chain Greenhouse Gas Emission Factors for US Industries and Commodities. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-20/001, 2020. Inflation adjustment = 4.08% 01 Jan 2020 31 Dec 2020 01 Jan 2020 31 Dec 2020
Supply Chain Factors Dataset v1.0, Tab: 2016_Detail_Commodity, Citation: Ingwersen, W. AND M. Li. Supply Chain Greenhouse Gas Emission Factors for US Industries and Commodities. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-20/001, 2020. Inflation adjustment = 5.53% 01 Jan 2021 31 Dec 2021 01 Jan 2021 31 Dec 2021
Supply Chain Factors Dataset v1.1, Tab: 2016_Detail_Commodity, Citation: Ingwersen, W. AND M. Li. Supply Chain Greenhouse Gas Emission Factors for US Industries and Commodities. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-20/001, 2020. Inflation adjustment = 13.43% 01 Jan 2022 31 Dec 2022 01 Jan 2022 31 Dec 2022
Supply Chain Factors Dataset v1.1.1, Tab: 2016_Detail_Commodity, Citation: Ingwersen, W. AND M. Li. Supply Chain Greenhouse Gas Emission Factors for US Industries and Commodities. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-20/001, 2020. Inflation adjustment = 20.70% 01 Jan 2023 31 Dec 2023 01 Jan 2023 31 Dec 2023
Supply Chain Factors Dataset v1.1.1, Tab: 2016_Detail_Commodity, Citation: Ingwersen, W. AND M. Li. Supply Chain Greenhouse Gas Emission Factors for US Industries and Commodities. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-20/001, 2020. Inflation adjustment = 24.43% 01 Jan 2024   01 Jan 2024