Tata Steel Ltd., one of the world’s largest steelmakers, has joined climate tech and industrial investors in a $75 million financing aimed at accelerating the deployment of Boston Metal’s molten oxide electrolysis (MOE) technology for low-carbon steelmaking and critical metals recovery.
The financing comes amidst a push by the United States and allied nations to secure reliable supplies of minerals and metals critical to advanced manufacturing, defense systems, artificial intelligence infrastructure, and electrification technologies.
“The world doesn’t just need more metals, it needs smarter, more adaptable ways to produce them,” said Mark Cupta, managing director at Prelude Ventures, a San Francisco-based venture capital firm focused on climate tech startups. “MOE stands out for its flexibility as a true platform technology, capable of operating across multiple metal systems with a high degree of selectivity.”
Founded in 2012 by Massachusetts Institute of Technology researchers Donald Sadoway, Antoine Allanore, and Jim Yurko, Boston Metal was initially established to commercialize MOE as a cleaner method for producing steel – an industry responsible for roughly 8% of global greenhouse gas emissions.
Unlike traditional blast furnaces that rely on coal and coke to chemically reduce iron ore, emitting enormous quantities of carbon dioxide in the process, MOE uses electricity to produce molten iron through an electrochemical process.
At roughly 1,600 degrees Celsius (2,900 F), electricity splits the oxygen-iron bond inside an electrolyte bath, producing molten iron while releasing oxygen instead of emitting carbon dioxide.
The process also streamlines steelmaking by replacing multiple conventional production steps, each carrying its own carbon footprint.
Boston Metal
Molten iron being tapped from an MOE cell.
While Boston Metal initially focused on decarbonizing steel production, the company has increasingly positioned MOE as a broader metallurgical platform capable of selectively recovering valuable metals from complex feedstocks, industrial waste streams, and lower-grade materials often overlooked by conventional processing methods.
Over the past year, the company has directed the technology toward recovering critical metals such as nickel, niobium, tantalum, tin, and vanadium.
These metals are increasingly important to aerospace alloys, semiconductors, grid infrastructure, advanced batteries, defense systems, and energy infrastructure.
Boston Metal says MOE’s ability to selectively recover metals from lower-grade materials offers a potential pathway to strengthen domestic and allied supply chains for critical minerals increasingly viewed as essential to economic competitiveness and national security.
“MOE is creating a scalable and cost-effective pathway to recover critical, high-value metals, support industrial onshoring and strengthen the secure supply of critical materials needed for advanced technologies, manufacturing and AI,” said Boston Metal CEO Tadeu Carneiro.
The company says the latest financing will help advance its critical metals business toward commercial deployment while continuing to scale its green steel technology.
The dual-use potential of MOE has attracted growing interest from climate-focused investors and industrial manufacturers alike.
“The company has built a new metallurgical platform and demonstrated its ability to produce high-quality metals from complex feedstocks; now the focus is commercial production,” said Rick Cutright, technology director at Climate Investment, which backs the next generation of climate-based global infrastructure. “Critical metals are the right first market because the need is immediate, the economics are attractive, and MOE can expand supply from materials that conventional processes leave behind.”
Tata Steel’s participation in the latest financing round signals that interest in MOE is reaching beyond climate venture capitalists and suggests that major steel producers are increasingly evaluating lower-carbon alternatives to conventional production.
If successfully commercialized at scale, MOE could position Boston Metal at the intersection of two of heavy industry’s biggest challenges – decarbonizing metals production and offering a new pathway to reliable supplies of minerals critical to the next generation of technologies.
Author Bio
Shane Lasley, Metal Tech News
With more than 18 years of covering mining, Shane is renowned for his insights and in-depth analysis of mining, mineral exploration, and technology metals.