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Sweden’s Stegra Revolutionises Steel with Green Hydrogen

Sweden’s Stegra Revolutionises Steel with Green Hydrogen

In 2023, the global steel industry produced nearly 2 billion metric tons of steel annually, enough to blanket Manhattan in a 13-foot thick layer. However, this production comes at a high environmental cost, with steelmaking accounting for around 8% of the world’s carbon emissions—more than aviation. Each ton of steel produced generates about two tons of carbon dioxide, a major contributor to global warming.

In response to this environmental challenge, several companies are making strides toward low- or zero-emission steel production. One of the most promising is Stegra, a Swedish startup formerly known as H2 Green Steel. Established in 2020, Stegra has already raised close to $7 billion and is now building the world’s first industrial-scale green steel plant in Boden, a town in northern Sweden. Set to begin production in 2026, the plant aims to produce 2.5 million metric tons of green steel annually, with plans to increase that to 4.5 million metric tons in the future. Stegra’s innovative approach uses “green hydrogen” produced with renewable energy to convert iron ore into steel. Located in an area with abundant hydropower resources, the plant will leverage both hydropower and wind power to drive a large electrolyzer that splits water into hydrogen. This hydrogen will then be used to separate oxygen from iron ore, creating metallic iron, which is the essential building block for steel.

This hydrogen-based steelmaking process has been successfully demonstrated at smaller pilot plants, notably by Midrex, an American company that supplies the equipment for Stegra’s plant. However, Stegra’s challenge will be scaling this technology to an industrial level, proving it can work efficiently and economically on a large scale. The creation of this green steel plant marks a significant step in the global push for sustainable manufacturing, promising to reduce the carbon footprint of one of the world’s most energy-intensive industries. Stegra’s initiative signals a future where steel production could be cleaner, helping industries worldwide meet carbon reduction goals while continuing to meet the growing demand for steel.

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