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Opportunities and roadblocks in the decarbonisation of the global steel sector: A demand and production modelling approach

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  • Kimon Keramidas

    (GAEL - Laboratoire d'Economie Appliquée de Grenoble - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement - UGA - Université Grenoble Alpes - Grenoble INP - Institut polytechnique de Grenoble - Grenoble Institute of Technology - UGA - Université Grenoble Alpes, LPSC - Laboratoire de Physique Subatomique et de Cosmologie - IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS - CNRS - Centre National de la Recherche Scientifique - UGA - Université Grenoble Alpes - Grenoble INP - Institut polytechnique de Grenoble - Grenoble Institute of Technology - UGA - Université Grenoble Alpes)

  • Silvana Mima

    (GAEL - Laboratoire d'Economie Appliquée de Grenoble - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement - UGA - Université Grenoble Alpes - Grenoble INP - Institut polytechnique de Grenoble - Grenoble Institute of Technology - UGA - Université Grenoble Alpes)

  • Adrien Bidaud

    (LPSC - Laboratoire de Physique Subatomique et de Cosmologie - IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS - CNRS - Centre National de la Recherche Scientifique - UGA - Université Grenoble Alpes - Grenoble INP - Institut polytechnique de Grenoble - Grenoble Institute of Technology - UGA - Université Grenoble Alpes)

Abstract

The steel sector represents a growing share of global carbon dioxide (CO 2) emissions and is perceived as a hardto-abate sector in the drive towards economy-wide decarbonisation. We present a model detailing steel demand and multiple steel production pathways within a larger global multi-regional energy system simulation model, projecting material, energy and emissions flows to 2100. We examine decarbonisation levels and options under different assumptions on climate policy, technologies and steel demand patterns, and study low-carbon options in the production of hydrogen as a steel decarbonisation vector. Global steel demand increases at a decelerated pace compared to the past two decades (+65 % in 2050 compared to 2020), driven by substantial increases in the underlying socioeconomic conditions. Climate policies lead to a limited positive feedback effect on steel demand (+21 % in 2050) due a faster equipment turnover and higher electrification, which could be overcompensated by energy saving and material efficiency measures. Increased recycling and strong electrification (up to 63 % of production in 2050) are projected as key levers towards decreasing emissions, made possible thanks to the increasing availability of steel scrap. Strong climate policies would be needed to push the steel sector to decarbonise fully, with electrification, carbon capture, biomass and hydrogen all contributing. Carbon capture would be necessary to reach net-zero emissions in the second half of the century.

Suggested Citation

  • Kimon Keramidas & Silvana Mima & Adrien Bidaud, 2024. "Opportunities and roadblocks in the decarbonisation of the global steel sector: A demand and production modelling approach," Post-Print hal-04383385, HAL.
    • Handle: RePEc:hal:journl:hal-04383385
    DOI: 10.1016/j.egycc.2023.100121
    Note: View the original document on HAL open archive server: https://hal.science/hal-04383385
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    Keywords

    Iron and steel; Climate mitigation; Industry decarbonisation; Energy system model; Integrated assessment model;
    All these keywords.

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