Materials · around 2033

Hydrogen-reduced green steel

Projection

Hydrogen replaces coke in making iron, removing a major source of industrial CO2.

Steelmaking emits roughly 7% of global CO2 because iron ore is reduced with coal. Direct reduction with clean hydrogen, then electric arc furnaces, would make steel with little carbon.

Why it’s plausible: Hydrogen direct-reduction plants are under construction in Europe; it depends on cheap clean electricity for electrolysis and on steelmakers financing new plants.

See it in the living treeWikipedia