Boston Metal, Inc. is a privately held technology company developing and commercializing Molten Oxide Electrolysis (MOE), a patented electrochemical platform for producing metals with significantly lower carbon emissions compared to traditional methods.
Founded in 2013 as a spinout from MIT research on inert anodes, the company is headquartered in Woburn, Massachusetts, United States, and maintains a wholly owned subsidiary, Boston Metal do Brasil, in Coronel Xavier Chaves, Minas Gerais, Brazil. Its MOE technology uses renewable electricity to directly convert metal oxides into high-purity molten metal in a single step, producing oxygen as the primary byproduct and eliminating coal, hydrogen infrastructure, or carbon capture needs.
The company applies MOE to decarbonize steelmaking by enabling the production of green steel from all grades of iron ore and to recover high-value critical metals such as niobium, tantalum, tin, and others from mining waste and low-grade feedstocks. Boston Metal licenses its MOE platform to steelmakers and manufactures metallic inert anodes, while advancing its own critical metals production at the Brazilian facility, which began generating revenue in 2026.
Backed by over $500 million in funding from investors including Breakthrough Energy Ventures, ArcelorMittal, Microsoft Climate Innovation Fund, Tata Steel Limited, and the International Finance Corporation, Boston Metal employs more than 300 people across its US and Brazilian operations. It is recognized as an emerging leader in sustainable metals technologies, with milestones including industrial-scale MOE cell commissioning, TIME 100 Most Influential Companies selection, and Fast Company World Changing Ideas recognition.
Also known as Boston Electrometallurgical Corporation and Boston Metal do Brasil.
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Industry investment and policy support sustain demonstrations across blast‑furnace retrofits, DRI–ESF, and electrochemical routes while economics and infrastructure shape deployment timing.
