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§ Private Profile · Madison, WI, USA
Commercializes advanced materials and modules for aqueous flow batteries, providing long-duration grid energy storage for renewables.
Based in Madison, Wisconsin, Flux XII develops advanced materials and modules for aqueous flow batteries to provide long-duration grid energy storage. The company utilizes scalable organic chemistries to convert intermittent renewable power into reliable baseload capacity, having screened over one thousand flow battery variations to identify optimal commercial solutions. By targeting grid power developers and renewable energy markets, the enterprise aims to offer a safer and more economical alternative to traditional gas or lithium-ion storage systems. Flux XII recently secured a seed funding round of three million nine hundred fifty thousand dollars led by The Grantham Foundation, with additional participation from the Wisconsin Alumni Research Foundation, Gigascale Capital, Desai Ventures, and The Collaborative Fund. Although the exact founding year is currently undisclosed, the organization was established by co-founders Patrick Sullivan and Xiuliang Lyu, alongside scientific advisor Dawei Feng.
Flux XII has raised $4.0M across 1 funding round.
Flux XII has raised $4.0M in total across 1 funding round.
Flux XII has raised $4.0M in total across 1 funding round.
Flux XII's investors include Josh Agenbroad, Desai Family Office, gener8tor, WARF Ventures.
Flux XII has raised $4.0M across 1 funding round. Most recently, it raised $4.0M Seed in November 2025.
| Date | Round | Lead Investors | Other Investors | Status |
|---|---|---|---|---|
| Nov 4, 2025 | $4M Seed | Josh Agenbroad | Desai Family Office, Gener8tor, Warf Ventures | Announced |