Phoenix Tailings Raises $76M to Launch First US Standalone Rare Earth Metals Plant

Phoenix Tailings

Phoenix Tailings rare earth plant to meet US defense demand

US-based startup Phoenix Tailings has raised $76 million in Series B funding to build a rare earth metals plant in New Hampshire. The Exeter facility will be the first standalone US rare earth refinery capable of producing finished metals directly from diverse feedstocks. Once fully operational, the site will have a 500t/yr production capacity—matching the entire annual demand of the US defense sector.

Exeter facility to refine key rare earth elements for magnet manufacturers

Initial output from the Phoenix Tailings rare earth plant will start this summer at 200t/yr, ramping up to 500t/yr in time. The facility will produce neodymium-praseodymium, ferro-dysprosium, dysprosium, and terbium—all essential for permanent magnets used in defense, electric vehicles, and medical devices. It will process feedstocks from mines, coal ash, recycling streams, and other industrial byproducts, offering flexible sourcing.

Global investors back strategic US supply chain expansion

The oversubscribed $76 million Series B round was led by Envisioning Partners of Korea and included Escape Velocity, Builders Vision, Yamaha Motor Ventures, M Power, and Sumitomo’s Presidio Ventures. This strong international investor support highlights the growing urgency to establish domestic rare earth supply chains. Phoenix Tailings already runs a 40t/yr commercial facility and sources concentrates from allied nations.

The Metalnomist Commentary

The Phoenix Tailings rare earth plant represents a major step in reshoring critical mineral processing to the US. Its feedstock flexibility and defense-aligned production profile could reduce dependence on China’s REE dominance. This deal also shows that global capital is actively fueling secure and resilient rare earth value chains.