SuperCritical Materials DOE License for Seawater Uranium Extraction: What It Means for Nuclear Fuel Supply

SuperCritical Materials, an Austin-based company, has secured an exclusive license from the U.S. Department of Energy to commercialize a technology that extracts uranium from seawater. The process uses specially treated acrylic fibers to capture dissolved uranium, which is then processed into yellowcake for nuclear reactors. This could help reduce U.S. reliance on imported uranium as nuclear power expands to meet clean energy demand. The technology was developed by Pacific Northwest National Laboratory and could eventually extract other critical minerals from seawater. While still early stage, the license marks a step toward diversifying domestic nuclear fuel supply. The U.S. currently imports most of its uranium despite rising production from traditional mines. For carbon markets and climate goals, this matters because nuclear power provides low-carbon baseload electricity. If seawater extraction becomes commercially viable, it could support the nuclear buildout needed to replace fossil fuels on the grid. The timeline and cost economics remain unclear, but the DOE backing signals serious interest in alternative fuel sources.