POSCO Fires a $200 Million Shot at China’s Rare Earth Fortress

Highlights

• POSCO International and ReElement Technologies announced a $200 million joint venture to build U.S.-based rare earth separation capacity for neodymium, praseodymium, dysprosium, and terbium oxides.
• The partnership targets pilot production by late 2027 with ambitions to move downstream into permanent magnet manufacturing for EVs, robotics, defense, and AI infrastructure.
• China controls roughly 90% of rare earth processing and 98% of heavy rare earth separation, making Western midstream alternatives strategically critical but commercially unproven.
• ReElement's approach focuses on a profitable, scalable midstream refining and recycling platform rather than relying solely on upstream mining, a distinction CEO Mark Jensen emphasizes.
• Key execution risks remain, including feedstock security, separation technology viability, operating costs, and the difficult step of converting oxides into commercially qualified magnets.

A major new joint venture between POSCO International and ReElement Technologies Corporation aims to build rare earth separation capacity inside the United States for magnet materials used in EVs, robotics, defense systems, and AI infrastructure. The proposed $200 million project matters because POSCO is one of the world’s largest industrial conglomerates, while ReElement represents a rising class of American midstream challengers attempting to build a scalable, commercially viable alternative to China’s refining dominance. Yet major questions remain around feedstock security, refining technology, economics, and whether Western rare earth separation can truly scale competitively.

The Real AI Arms Race Is Chemical

The AI boom is not powered by code alone. It runs on magnets.

And magnets run on rare earth separation—the chemically violent, technologically difficult, and capital-intensive midstream process China still overwhelmingly controls.

That reality sits beneath a potentially important new partnership between POSCO International and ReElement Technologies to build a U.S.-based rare earth separation and purification facility targeting neodymium, praseodymium, dysprosium, and terbium oxides. The companies aim to invest roughly $200 million, launch pilot production by late 2027, and eventually move downstream into permanent magnet manufacturing.

Why Investors Should Care

This is not another speculative mining story dressed up as industrial policy. POSCO brings scale, manufacturing credibility, global industrial reach, and deep downstream exposure across steel, EVs, motors, batteries, and advanced manufacturing supply chains. When a conglomerate of POSCO’s size moves into American rare earth refining, the signal matters.

ReElement, meanwhile, appears to be pursuing a different strategy from many Western rare earth hopefuls. Rather than betting solely on mining, the company is attempting to build a midstream refining and recycling platform designed around profitability, scalability, and U.S. industrial realities. That distinction could prove critical. CEO and founder Mark Jensen has conveyed to Rare Earth Exchanges™ the imperative of a business model that works, with profitability and scale built incrementally. Seemingly a reasonable and rational point of view to contribute to greater American resilience over time.

Beneath the Headlines, the Hard Part Remains

Still, investors should separate ambition from execution. The announcement provides limited detail regarding the actual separation technology, long-term feedstock sourcing, operating costs, commercial qualification pathways, or whether heavy rare earth separation can truly scale economically in the United States. Jensen has conveyed to Rare Earth Exchanges that he understands execution is first and foremost the test for success.

And the industry’s most difficult challenge remains largely untouched: converting oxides into metals, alloys, and ultimately qualified magnets at globally competitive cost. China still controls roughly 90% of rare earth processing and about 98% of heavy rare earth separation.

This deal will not break that dominance overnight.

But it does suggest the rare earth midstream war is finally moving from PowerPoint slides into industrial reality. And while this process will likely resemble a sausage factory for the likes of ReElement, MP Materials, USA Rare Earths, and others, the nation must rally around the mission-critical directive of rare earth and critical mineral resilience. To those groups that deliver goes the future.