According to a recent study, in order to achieve the goal of zero emissions, we must be ready for a future where the production of steel may be limited. Steel is a crucial material in our daily lives, playing a significant role in the automobiles we drive, the structures we reside in, and the tra
, argues that there is no silver bullet. He says that current plans to cut carbon emissions underestimate how difficult it will be to develop CCS and hydrogen technologies and deploy them widely: “These technologies still face serious technical, economic, and social challenges, and have yet to be implemented at scale. And importantly, it is highly uncertain whether there will be sufficient non-emitting electricity to use these technologies.
The research involved mapping the current flows of steel in Japan’s industry and using a model to explore how the industry might change if a strict carbon budget were applied in future. Dr. Watari explains that with current practice, the quantity and quality of steel produced would dramatically decrease under a zero-emission carbon budget.
According to Dr. Watari, “zero-emission steel production is possible by 2050, but in limited quantity and quality compared to current total production. This is due to the limited availability of zero-emission compatible resources and downcycling practices of scrap steel.” The implication is clear. It is not enough to rely on a technological silver bullet materializing to transform the supply of steel. We also need to look seriously at strategies to reduce demand by shifting our culture of steel use and improving our material efficiency. We also need to pursue upcycling to produce high-grade steel from scrap steel.
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