Fluxnium
Santa Monica, California, United States
◆ Total Raised
$7M
◆ Stage
seed
◆ Location
Santa Monica, California, United States
◆ Founded
2026
◆ Team size
1-10
◆ Links
◆ About Fluxnium
Fluxnium develops uranium adsorption fiber technology to extract uranium from seawater for domestic nuclear fuel supply.
◆ What sets it apart
It uses offshore fiber-based adsorption to recover uranium already dissolved in seawater, avoiding mining and tailings.
◆ Sectors
◆ Business
Modelhardware
CustomerNuclear fuel buyers, utilities, and the broader domestic nuclear energy supply chain
◆ Notable
- Raised a $7 million seed round led by Congruent Ventures with participation from Constellation Technology Ventures and Active Impact Investments
- Came out of stealth in September 2026
- Licensed chemistry developed with U.S. national laboratory support
◆ Funding rounds
◆ Explore the market
◆ FAQ
What does Fluxnium do?
Fluxnium develops uranium adsorption fiber technology to extract uranium from seawater for domestic nuclear fuel supply.
Where is Fluxnium based?
Fluxnium is based in Santa Monica, California, United States, founded in 2026.
How much has Fluxnium raised?
Fluxnium has raised $7M in tracked funding and is currently at the seed stage.
Who has invested in Fluxnium?
Investors in Fluxnium include Congruent Ventures, Constellation Technology Ventures and Active Impact Investments.