Fluxnium Raises $7 Million for Uranium Extraction
The Los Angeles-based startup aims to harvest uranium from seawater using proprietary fiber technology.
Updated on Oct. 21, 2026 in Nuclear
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Fluxnium has secured $7 million in a seed funding round to advance its technology for extracting uranium from seawater. The company plans to use the capital to scale its proprietary fiber-based platform.
Why it matters
With the United States currently importing over 90% of its uranium, the company aims to provide a sustainable domestic supply chain. The project seeks to lower costs to levels competitive with conventional mining operations.
Fluxnium utilizes high-surface-area fiber technology developed with a U.S. national laboratory to capture uranium. The company deploys these fibers on longline systems in open water, where they are retrieved, processed, and redeployed.
The players
Fluxnium
A Los Angeles-based startup focused on developing sustainable uranium extraction technologies from seawater.
Congruent Ventures
A venture capital firm that focuses on sustainable startups and led the recent seed funding round.
Constellation Technology Ventures
The venture capital arm of the energy company Constellation, which participated in the funding round.
Active Impact Investments
A Canadian-based investment firm that focuses on impact-driven startups and participated in the round.
The details
The seed round was led by Congruent Ventures with participation from Constellation Technology Ventures and Active Impact Investments. The funding will support development, pilot testing, and platform scale-up to meet a projected doubling in nuclear power demand.
Timeline
October 21, 2026: Fluxnium announced the $7 million seed funding round.
Next 15 years: Expected duration for nuclear power demand to double.
The Big Picture
This project seeks to address the dependency issues highlighted by the U.S. Department of Energy's domestic uranium supply metrics. By shifting toward seawater extraction, the company is attempting to replace traditional mining dependencies with a sustainable, domestic alternative.
Successful scaling of this technology could reduce U.S. reliance on imported nuclear fuel, potentially stabilizing costs for domestic energy producers. If proven viable at scale, it provides a blueprint for securing long-term fuel supplies for the growing nuclear sector.
The takeaway
The startup is positioning itself to capture market share by addressing the critical gap in domestic uranium production. Investors and energy analysts will be watching to see if the pilot testing can confirm the economic feasibility of extracting elements from ocean water.
Further reading
For more information on innovations in the fuel cycle, visit Los Angeles Nuclear.
Source note: This article includes information reported by Los Angeles Times.
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