Clean tech startup Fluxnium found a way to tap 50,000 years worth of nuclear fuel

Startup Fluxnium emerged from stealth with technology to extract uranium from seawater using polymer fibers licensed from U.S. Department of Energy national laboratories. The company closed a $7 million seed round led by Congruent Ventures with participation from Constellation Energy.

• Oceans hold over 4 billion tons of uranium, enough for about 50,000 years
• Yellowcake price rose 75% over five years
• Fibers stay in the sea 30–60 days, then uranium is eluted and purified
• $7 million round led by Congruent Ventures with Constellation Energy