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Emission Factor Recommendation for Life Cycle Assessments with Generative AI
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    Emission Factor Recommendation for Life Cycle Assessments with Generative AI
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    • Bharathan Balaji*
      Bharathan Balaji
      Amazon, Seattle, Washington 98121, United States
      *Email: [email protected]
    • Fahimeh Ebrahimi
      Fahimeh Ebrahimi
      Amazon, Seattle, Washington 98121, United States
    • Nina Gabrielle G Domingo
      Nina Gabrielle G Domingo
      Amazon, New York, New York 10018, United States
    • Venkata Sai Gargeya Vunnava
      Venkata Sai Gargeya Vunnava
      Amazon, New York, New York 10018, United States
    • Abu-Zaher Faridee
      Abu-Zaher Faridee
      Amazon, Arlington, Virginia 22202, United States
    • Soma Ramalingam
      Soma Ramalingam
      Amazon, Seattle, Washington 98121, United States
    • Shikha Gupta
      Shikha Gupta
      Amazon, Seattle, Washington 98121, United States
      More by Shikha Gupta
    • Anran Wang
      Anran Wang
      Amazon, Seattle, Washington 98121, United States
      More by Anran Wang
    • Harsh Gupta
      Harsh Gupta
      Amazon, East Palo Alto, California 94303, United States
      More by Harsh Gupta
    • Domenic Belcastro
      Domenic Belcastro
      Amazon, Seattle, Washington 98121, United States
    • Kellen Axten
      Kellen Axten
      Amazon, Seattle, Washington 98121, United States
      More by Kellen Axten
    • Jeremie Hakian
      Jeremie Hakian
      Amazon, Seattle, Washington 98121, United States
    • Jared Kramer
      Jared Kramer
      Amazon, Seattle, Washington 98121, United States
      More by Jared Kramer
    • Aravind Srinivasan
      Aravind Srinivasan
      University of Maryland and Amazon, College Park, Maryland 20742, United States
    • Qingshi Tu
      Qingshi Tu
      The University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
      More by Qingshi Tu
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    Environmental Science & Technology

    Cite this: Environ. Sci. Technol. 2025, 59, 18, 9113–9122
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    https://doi.org/10.1021/acs.est.4c12667
    Published March 21, 2025
    Copyright © 2025 American Chemical Society

    Abstract

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    Accurately quantifying greenhouse gas (GHG) emissions is crucial for organizations to measure and mitigate their environmental impact. Life cycle assessment (LCA) estimates the environmental impacts throughout a product’s entire lifecycle, from raw material extraction to end-of-life. Measuring the emissions outside a product owner’s control is challenging, and practitioners rely on emission factors (EFs)─estimations of GHG emissions per unit of activity─to model and estimate indirect impacts. However, the current practice of manually selecting appropriate EFs from databases is time-consuming and error-prone and requires expertise. We present an AI-assisted method leveraging natural language processing and machine learning to automatically recommend EFs with human-interpretable justifications. Our algorithm can assist experts by providing a ranked list of EFs or operating in a fully automated manner, where the top recommendation is selected as final. Benchmarks across multiple real-world data sets show our method recommends the correct EF with an average precision of 86.9% in the fully automated case and shows the correct EF in the top 10 recommendations with an average precision of 93.1%. By streamlining EF selection, our approach enables scalable and accurate quantification of GHG emissions, supporting organizations’ sustainability initiatives and progress toward net-zero emissions targets across industries.

    Copyright © 2025 American Chemical Society

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    This article is cited by 1 publications.

    1. Lili Jin, Hui Huang, Hongqiang Ren. AI-driven transformation of water treatment technology and industry: toward a new era of comprehensive innovation. Frontiers of Environmental Science & Engineering 2025, 19 (8) https://doi.org/10.1007/s11783-025-2034-3

    Environmental Science & Technology

    Cite this: Environ. Sci. Technol. 2025, 59, 18, 9113–9122
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acs.est.4c12667
    Published March 21, 2025
    Copyright © 2025 American Chemical Society

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