DOE Taps Coal Waste for Critical Minerals

The U.S. Department of Energy (DOE) has selected five pilot projects to receive a portion of $75 million aimed at extracting rare earth elements and other critical minerals from coal and coal-based feedstocks. This initiative is part of a broader $1 billion effort to strengthen domestic supply chains for materials like gallium, germanium, and aluminum by utilizing waste streams from over 300 years of American coal mining. By targeting coal byproducts and tailings, the program seeks to mitigate financial risks for commercial deployment while reducing reliance on foreign sources for essential industrial materials.

The U.S. Department of Energy's National Energy Technology Laboratory (NETL) will manage five selected projects under the Mines & Metals Capacity Expansion funding opportunity. These projects are designed to pilot technologies capable of producing market-ready critical materials, including rare earths, gallium, germanium, and aluminum, from domestic coal-based resources. Assistant Secretary of Energy Audrey Robertson emphasized that investing in these industrial facilities can increase domestic production and help mitigate the financial risks associated with commercial-scale deployment of recovery technologies.

The selected projects involve a mix of academic and private sector leaders in the mining and metals space. The University of North Dakota is spearheading a pilot facility at the Falkirk coal mine, while Peabody Energy is advancing the Wyoming Rare Earths Project within its Powder River Basin operations. Other participants include CONSOL Innovations, which is focusing on extracting minerals from coal waste tailings in Pennsylvania, and American Resources, which is applying proprietary process technology for commercial-scale recovery. Valor Metals is also included for its work commercializing electrochemical liquid-liquid extraction (e-LLE) technology.

These selections are part of a larger federal strategy to scale mining, processing, and manufacturing technologies across the critical minerals supply chain, which includes the $134 million Rare Earth Elements Demonstration Facility Program. While the $75 million push represents a significant step toward domestic mineral independence, the DOE noted that these selections for award negotiations do not yet constitute a final funding commitment. The initiative highlights the potential of repurposing historical coal waste streams as a viable source for the high-tech materials required for modern industrial applications.