Niron breaks ground on rare earth-free magnet manufacturing plant in Minnesota

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Rendering from Niron Magnetics.

Niron Magnetics broke ground Friday on a new 1,500-ton-per-year permanent magnet manufacturing facility in Sartell, Minnesota.

After nearly a decade of research and development in partnership with the U.S. Department of Energy (DOE) and the University of Minnesota, Niron Magnetics said it has successfully created one of the first commercially viable new magnet materials in decades, capable of producing superior permanent magnets.

Niron Magnetics said its product does not contain any rare-earth elements, and is made from abundant elements such as iron and nitrogen.

The company said it is able to scale manufacturing of permanent magnets made from iron nitride, which exhibits exceptionally high magnetization and removes the need for rare-earth elements.

Investors and commercial partners include Stellantis, Samsung, Allison Transmission, Magna, and others already sampling products from the pilot facility, it said.

The new 190,000-square-foot facility will expand Niron Magnetics’ capacity to supply rare-earth-free permanent magnets for data center cooling pumps, automobile motors, robotics, consumer electronics, defense and drone equipment, and other applications critical to the U.S. Economy, it said.

The facility will be built on the former Verso Paper Mill site, redeveloping a US designated coal community property.

The development comes at a critical time, as pressure on rare-earth supply chains intensifies due to geopolitical tensions and rising demand for permanent magnets globally.

“We’re proud to scale this homegrown technology in the heart of the industrial Midwest, and excited to make this community central to America’s supply chain independence,” Niron CEO Jonathan Rowntree said in a news release.

The plant will be operational in early 2027 and will create over 175 full-time jobs in
manufacturing, engineering, and operations, the company said.

“Permanent magnets are an essential part of modern vehicles, the heart of the performance for everything from powertrains and cooling systems to seat motors and speakers. We are committed to offering the freedom of choice to our customers and the integration of these magnets is critical to that mission,” Stellantis VP, Propulsion Systems Engineering, Sinisa Jurkovic said.

“We’ve been working with Niron since 2023to unlock next-generation motor performance, and Iron Nitride technology is helping us engineer and deliver vehicles with best-in-class capabilities.”