You are here:
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.
Impact/Purpose:
This EPA report describes supply chain GHG emission factors prepared with versions of the USEEIO, which are life cycle models of all categories of goods and services and industries in the US economy.
Description:
Many organizations quantify greenhouse emissions in their value chain. Emissions from purchased goods and services and capital goods, referred to as Scope 3 emissions in the Greenhouse Gas Protocol Scope 3 Accounting and Reporting Standard, represent a significant emissions source for many organizations. To assist in quantifying these emissions, we have developed a comprehensive set of supply chain emission factors covering all categories of goods and services in the US economy. The final factors are available in the Supply Chain Emission Factors for US Industries and Commodities dataset. These factors are intended for quantifying emissions from purchased goods and services using the spend-based method defined in the Greenhouse Gas Protocol Technical Guidance for Calculating Scope 3 Emissions.
This report describes the preparation of those factors with a background on the modeling associated with this preparation, and presents extensive analysis of the factors, including supporting equations and results in two appendices. These factors were prepared using USEEIO models, which are a life cycle models of goods and services in the US economy.
URLs/Downloads:
Supply Chain Factors Dataset v1.2Supply Chain Factors Dataset v1.1.1
Supply Chain Factors Dataset v1.1
Supply Chain Factors Dataset v1.0
Amendment 1 to Supply Chain Factors – Description
SUPPLY CHAIN GREENHOUSE GAS EMISSION FACTORS FOR US INDUSTRIES AND COMMODITIES-.PDF (PDF, NA pp, 18021 KB, about PDF)
Appendices 1 - 10
Appendix 1 - Model Equations (PDF, NA pp, 223 KB, about PDF)
Appendix 2 - USEEIO Model Descriptions (PDF, NA pp, 132 KB, about PDF)
Appendix 3 - Industry and Commodity Reference Lists (PDF, NA pp, 186 KB, about PDF)
Appendix 4 - Distribution, Wholesale and Retail Margins for Industries and Commodities (PDF, NA pp, 149 KB, about PDF)
Appendix 5 - National Level Gross Output and Direct Emission Trends (PDF, NA pp, 478 KB, about PDF)
Appendix 6 - Annual Change in Supply Chain Emission Factors (PDF, NA pp, 246 KB, about PDF)
Appendix 7 - Contribution Analysis for Supply Chain Emissions (PDF, NA pp, 2382 KB, about PDF)
Appendix 8 - Comparing Summary and Detail Level Direct and Supply Chain Emission Factors (PDF, NA pp, 261 KB, about PDF)
Appendix 9 - Comparing Commodity-based and Industry-based Supply Chain Emission Factors at the Detail Level (PDF, NA pp, 236 KB, about PDF)
Appendix 10 - Model Validation Results (PDF, NA pp, 135 KB, about PDF)
National GHG Industry Attribution Model