We are facing a perfect storm: A global energy crisis layered on top of a climate emergency. The good news: It could accelerate the decarbonization of one of the world’s most carbon-intensive industries— steelmaking, responsible for about 7-9% of global CO₂ emissions. Among these innovations, a breakthrough technology from Sweden stands out.

Decarbonizing steel is crucial to meet global climate targets, and emerging innovations promise not only dramatic emissions cuts but also new economic opportunities in green jobs and technologies. The new Swedish technology stands out —not just for its potential to cut carbon emissions but also for its energy efficiency and valuable by-products that could reshape the industry – together with an increased resilience by a localized supply of raw materials.

Why Steel Production Is So Carbon-Intensive

Traditional steelmaking relies heavily on coal, particularly in blast furnaces where coal serves as both fuel and reducing agent to convert iron ore into iron. This process releases vast amounts of carbon dioxide, comparable to the emissions of some of the world’s largest countries.

Steel production is also energy-intensive, often consuming fossil fuels beyond just coal, making it a double challenge for climate action.

The scale of the challenge is massive: Global steel production is about 1.8 billion tonnes per year. The sector emits around 2.6 billion tonnes of CO₂ annually. This scale underscores the urgency of finding sustainable alternatives.

Sustainable Alternatives and Emerging Trends

Efforts to decarbonize steel include:

Electric Arc Furnaces (EAFs): These recycle scrap steel using electricity, ideally from renewable sources, reducing emissions significantly. There is however by far not enough scrap steel in the world to rely only on this method, but an alternative is to feed such furnaces with Direct Reduced Iron (DRI). Hydrogen-Based Direct Reduced Iron (DRI) : In this method hydrogen replaces coal in reducing iron ore, producing water vapor instead of CO₂. This method is also being developed in Sweden by Stegra and Hybrit, but has run into delays mainly due to difficulties with energy supply and increased costs in setting up the facilities. Stegra was in April recognized as a Strategic Net-Zero Project by Tillväxtverket, the Swedish Agency for Economic and Regional Growth. The decision places Stegra’s, among those the European Union considers strategically important for reaching its climate goals.

Carbon Capture, Utilization, and Storage (CCUS): Captures emissions from traditional processes for storage or reuse.

Yet, these technologies face challenges—EAFs - electric arc furnaces and hydrogen-based DRI are electricity-intensive, and CCUS for blast furnaces is costly and also energy-heavy.

Enter FerroSilva: Energy Efficiency Meets Carbon Negativity

Energy efficiency has been a cornerstone of industrial progress since the Industrial Revolution. FerroSilva’s approach aligns with this tradition, targeting energy-efficient, fossil-free steel production with a carbon-negative footprint.

FerroSilva’s method uses biomass gasification combined with carbon capture and utilization. It requires one-tenth of the electricity of competing hydrogen-based DRI methods, easing pressure on electricity grids and costs.

The carbon is not released into the atmosphere, but instead captured and potentially used for other value adding purposes, such as bio-methanol in a process using hydrogen from new renewable energy, a so-called e-fuel. This market is of rapidly growing importance and a way to store energy from wind production. It produces Direct Reduced Iron (DRI) with about 2% biogenic carbon content, ideal for electric arc furnace steelmaking.

FerroSilva is the first carbon negative solution that:

• Provides a metallurgic process at the same technological readiness level as in natural gas-based production, since the gas composition is the same and thus also the heat balance reduction reactions.

• Does not require high amounts of electricity as are needed for hydrogen-based processes.

Göran Nyström of FerroSilva explains: “Our process requires less than a tenth of the electricity per ton of sponge iron produced, because most of the energy we use is stored in forest residues that we gasify.”

A study published in Science Direct states that biosyngas is a promising alternative to fossil energy and reductants used in existing ironmaking due to its renewability, technological maturity and compatibility for use in existing furnaces.

A Swedish-Led Collaboration with Global Implications

The project feasibility study was backed by the Swedish Energy Agency and major industry players like Ovako, Alleima, Uddeholm, Sveaskog, and Lantmännen, one of Europe´s largest agricultural cooperatives. This comprehensive feasibility study completed already in 2022 confirmed FerroSilva’s potential to deliver negative carbon footprint steel at competitive costs.

Plans are underway for a first commercial plant aiming to provide: Cost-competitive, carbon-negative, fully carburized iron raw material, and biogenic carbon dioxide for e-fuels and chemicals.

FerroSilva leverages forest and agricultural waste , turning otherwise unused biomass into valuable products while capturing and repurposing carbon emissions and generating process heat for communities — a true circular economy model.

“The company already has letters of intent for biomass supply, agreements for land use and DRI offtake, and partnerships emerging for biogenic CO₂ production”, says Peter Samuelsson, co-founder of FerroSilva AB.

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Compared to hydrogen-based DRI, FerroSilva’s process:

Uses 90% less electricity .

Delivers valuable biogenic by-products alongside steel.

Supports energy grid stability by lowering electricity demand.

Advances a carbon-negative footprint , not just carbon neutrality.