Fluxnium, Inc.
A uranium-supply technology that uses reusable high-surface-area fibers to adsorb dissolved uranium from seawater for nuclear fuel production.
$7MSeed
ParticipantCT
Constellation Technology Ventures
technologyventures.constellation.com ↗Activity from announced rounds
Activity in this selectionUnited States · Oct 14, 2026 · Sep 15, 2026
Constellation Technology Ventures is Constellation’s venture investment arm, backing energy innovation across hardware, software and related infrastructure.
Technology across the energy system
CTV invests in businesses advancing cleaner energy and creating commercial value across the Constellation platform. Its published focus spans the power sector, electrification, emissions management and digital technologies.
The team works with Constellation’s operating businesses and customers as well as portfolio companies, connecting investment activity with opportunities for commercial deployment.
Activity recorded on RoundOS
Recorded RoundOS financings include Blue Energy’s nuclear-plant development, GridBeyond’s distributed-energy management and Fluxnium’s seawater uranium-supply technology. These are covered activity examples, not the full CTV portfolio or a claim that Constellation has committed to purchase their products.
- Rounds participated in
- 1
- Confirmed lead rounds
- 0 All roles disclosed
- New companies
- 1 First participation on record · 0 follow-on
- Funding in participating rounds
- $7M 1 disclosed · full round size, not this investor’s share