Flux XII logo

Flux XII

Energy & Sustainability
United States United States, Madison, Wisconsin
Founded 2021 · 1-10 employees

About Flux XII

Flux XII is a next-generation energy storage company developing advanced materials for aqueous flow batteries. Their mission is to unlock an adaptable energy future by transforming intermittent renewable power into reliable baseload grid capacity through economical long-duration energy storage.

Latest Funding

Seed
$3.95M

Announced 2025-11-04

Buying Signals

Where the capital is going, and whether it's already started moving.

Spend Intent

3 signals · where the capital is going

Infrastructure

Build testing infrastructure and manufacturing capabilities to support planned megawatt-scale deployment by 2026

renewablesnow.com

+2 more capital deployment signals · confidence ratings · source articles

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Employees
1-10
Founded
2021
HQ
Madison, Wisconsin
Industry
Energy & Sustainability
Tags
Cleantech Energy Storage Renewable Energy
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Spend intent

Where this round will be spent.

Hiring signals

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Who actually decides.

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84 / 100
Excellent match

Industry

High

Size

Mid

Stage

High

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Tech Stack

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HSTS HSTS
HTTP/3 HTTP/3
Wix Wix

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Key Highlights

AI Insights

Funding will support further development and commercialization of their proprietary flow battery chemistry based on stable, sustainable, and low-cost organic compounds.

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For sales teams

Selling to Flux XII? You're in the right place.

Knowing they raised is the start. Our difference is what comes attached to Flux XII.

Spend Intent

Where this round will be spent.

Hiring Signals

Which departments are growing.

Verified Contacts

Who actually decides.

See the buying signals

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