Flux XII, Inc. raises $3.95 million in Seed funding led by The Grantham Foundation to enhance grid energy storage technology.
Amount Raised
$3.95 Million
Round Type
Seed
MadisonEnergyRenewable EnergyEnergy ManagementEnergy StorageEnergy EfficiencyBiomass EnergyInvestors
Description
Flux XII, Inc. has successfully raised $3.95 million in a Seed funding round to advance its innovative flow battery energy storage solutions. The funding round was led by The Grantham Foundation, with additional support from several investors. This financing will facilitate the scaling of their electrolyte and membrane production
Quick answer
Flux XII raised $3.95 Million in a Seed round, dated November 4, 2025. Investors: Wisconsin Alumni Research Foundation, Gener8tor, Desai Ventures and The Grantham Foundation For The Protection Of The Environment. Flux XII is based in Madison, Wisconsin, United States.
- How much did Flux XII raise?
- Flux XII raised $3.95 Million in a Seed round on November 4, 2025.
- Who invested in Flux XII?
- Wisconsin Alumni Research Foundation, Gener8tor, Desai Ventures and The Grantham Foundation For The Protection Of The Environment are named as investors in this round.
- What does Flux XII do?
- Flux XII is a next-generation energy storage company developing advanced materials for aqueous flow batteries.
- Where is Flux XII based and how big is it?
- Flux XII is based in Madison, Wisconsin, United States. Fundz records about 4 employees.
- Who are the decision-makers at Flux XII?
- Fundz holds 1 contact at Flux XII. Names and contact details are shown to Fundz members.
Source: Fundz verified event record.
Who else raised in Energy and Renewable Energy around the same time
Companies in the same sectors as Flux XII that raised within 45 days of this round, from Fundz verified event records.
- Capstone Energy Plus, Inc. raised $15M (Post-IPO Equity) on November 24, 2025.
- Plentify raised $15M (Series A) on November 18, 2025.
- Fuse Energy raised $69M (Funding Round) on December 18, 2025.
- BayWa r.e. raised $416M (Funding Round) on December 9, 2025.
- Hachiko raised $2.5M (Seed) on December 3, 2025.
- Agile Energy raised an undisclosed amount on December 2, 2025.
Who to call at Flux XII, and when
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- An alert the day Flux XII raises, hires an executive or expands, scored against what you sell
- The decision-makers there, with verified emails
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Related People
Flux XII raised. Fundz records a round at a median of 3.6 minutes from the SEC filing, with the decision-maker attached.
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