The Roles of Energy and Material Efficiency in Meeting Steel Industry CO2 Targets

The Roles of Energy and Material Efficiency in Meeting Steel Industry CO2 Targets
Rachel L Milford
Stefan Pauliuk
Julian Allwood
Daniel B. Müller
Environmental Science & Technology, Volume 47, Issue 7, Pages 3455-3462
Identifying strategies for reducing greenhouse gas emissions from steel production requires a comprehensive model of the sector but previous work has either failed to consider the whole supply chain or considered only a subset of possible abatement options. In this work, a global mass flow analysis is combined with process emissions intensities to allow forecasts of future steel sector emissions under all abatement options. Scenario analysis shows that global capacity for primary steel production is already near to a peak and that if sectoral emissions are to be reduced by 50% by 2050, the last required blast furnace will be built by 2020. Emissions reduction targets cannot be met by energy and emissions efficiency alone, but deploying material efficiency provides sufficient extra abatement potential.
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