Molten Oxide Electrolysis for steel decarbonization

About 2 billion tons of steel are produced every year, accounting for ~10% of global carbon emissions. Boston Metal is electrifying the primary steel industry with a direct, efficient, and modular solution to decarbonize the most important engineering material in the world.

We’ve developed an electrolysis process that eliminates the need for coal in steel production. An electro-chemical process, electrolysis uses direct electric current to separate chemical compounds into their constituent parts.

Our Molten Oxide Electrolysis (MOE) technology provides the most direct, scalable solution to make green steel.

In the cell, an inert anode is immersed in an electrolyte containing iron ore and then it’s electrified. When the cell heats to 1600C, the electrons split the bonds in the iron oxide in the ore.

The result is a clean, high purity liquid metal that can be sent directly to ladle metallurgy — no reheating required.

Our MOE platform works with all iron ore grades and does not require process water, hazardous chemicals, or rare-metal catalysts to operate.

Zero CO2 Emissions

We removed carbon from the equation

Capital Expenditures

Cost Competitive

MOE converts even low- and mid-grade iron ore fines directly into high-purity molten iron. This enables the broadest possible supply of feedstock and protects against the price volatility of premium ores. Our simplified process eliminates the need for coke production, iron ore processing, blast furnace reduction, and basic oxygen furnace refinement.


About the size of a school bus, Boston Metal’s modular MOE cells can be scaled up to meet production capacity targets from thousands to millions of tons of output for a customized steel manufacturing solution.

Infographic: Transforming Steel Production

Steel is the foundation of our world. But, steelmaking is extremely carbon intensive and accounts for about 10% of global CO2 emissions. The steel industry needs a direct, scalable solution to reach net-zero on the timeline society is demanding.

The Path Forward

We’re on track to reach commercialization by 2026 to meet growing global demand for green steel.


Semi-industrial validation of MOE cell for steel production


Demonstration plant deployment

Second half of the decade

Commercial plant deployments


We’re proud to have our efforts recognized by leading industry organizations, including: