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Environmentally-extended input-output analysis (EEIOA)
Citation:
Ingwersen, W. Environmentally-extended input-output analysis (EEIOA). Presented at Meeting of the Yale School of the Environment Applications of Industrial Ecology class, New Haven, CT, October 12, 2023.
Impact/Purpose:
This lecture was given by invitation from the Yale School of the Environment for the Applications of Industrial Ecology graduate course.
Description:
This is an introductory lecture on environmentally-extended input-output analysis (EEIO) and applications. It was prepared for professional masters students and given at the invitation of the Yale School of the Environment, and is designed accordingly. Background readings associated with the lecture are an EEIO intro article, a detailed overview of hybrid IO models, and the Executive Summary of our Supply Chain GHG Emission Factors report. In Part I, I cover input-output tables, analysis, and environmental extensions. US aggregate IO data from the BEA and the EPA USEEIO model are given as an examples. Variations of standard EEIO models are presented as a way to overcome limitations in these models, including multi-regional (MRIO), disaggregated models, and the various model constructs hybrid models. EEIO is briefly compared to Life Cycle Assessment (LCA) and Material Flow Analysis (MFA).In Part II, I cover applications of EEIOA. These included in national footprints, to derive emission factors, for screening-level LCA. In Part III, I share broader thoughts on the usefulness of EEIOA in industrial ecology based on my experiences and along with some open questions about its use in the future.