Steel production is one of the world’s dirtiest industrial processes—accounting for up to 9% of global CO₂ emi

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Steel production is one of the world’s dirtiest industrial processes—accounting for up to 9% of global CO₂ emissions. Traditionally, it relies on coal-fired blast furnaces to smelt iron from ore, producing nearly two tons of CO₂ for every ton of steel. But now, a revolutionary method by Boston Metal, an MIT spinout, might change that forever.

Using molten oxide electrolysis (MOE), Boston Metal skips the coal entirely. Their system heats iron ore with electricity to 1,600°C, splitting it into pure molten iron and oxygen. No carbon emissions—just clean, scalable steel. In March 2025, they successfully produced over a ton of this green steel, with plans for a commercial-scale plant by 2026. If powered by renewables, this method could help decarbonize an entire industry.

,GreenSteel ,BostonMetal ,MITInnovation ,CleanEnergy ,Decarbonization

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