GreenIron is a metal technology company enabling carbon-neutral value creation for the steel and metals industry.

Founded in 2018, GreenIron has developed a unique, patented hydrogen-based reduction technology that transforms metal industry by-products into circular, high-quality metal feedstock.

With a diverse and highly skilled team, GreenIron is driven by the ambition to become a global leader in circular and carbon-neutral metal production and recycling.

The company is building an organisation with world-class capabilities in metal technology R&D, operational excellence and large-scale industrial deployment.


GreenIron’s reduction furnance in Sandviken

Hydrogen-based metal recovery – designed for circular industry

At the core of GreenIron’s patented technology is solid-state hydrogen reduction. Instead of using coal, coke or other fossil reductants, hydrogen is used to remove oxygen from metal oxides and convert them into metal, with water as the only by-product.

GreenIron’s reduction technology enables fossil-free and energy-efficient recovery of metals from steel industry by-products. Designed for industrial scale and local deployment, the technology integrates into existing steelmaking value chains and offers steelmakers an attractive, low-risk service model.

  • Profitable sustainability – Delivering measurable economic and environmental value to customers.
  • Circular feedstock – Recover 90–95% of the metal value from steel industry by-products.
  • Carbon-neutral process – Achieve up to 90% CO₂ reduction compared to fossil-based methods.
  • Scalable, modular & flexible – Scalable and flexible technology, compatible with intermittent energy supply.
  • Proven & ready – First commercial facility in Sandviken, Sweden.