Flux XII Inc.

Flux XII Inc. is a Madison-based energy startup that develops organic redox flow battery systems. Its innovative design provides safe, scalable, and sustainable long-duration energy storage, enhancing grid security.

Company Location

Country:

United States

City:

Madison, Wisconsin

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Company Overview

Flux XII Inc. is an energy technology startup founded by researchers from the University of Wisconsin-Madison in Madison, Wisconsin. The company specializes in organic-based flow battery systems for long-duration energy storage, aiming to deliver safe, sustainable, and affordable energy storage solutions that enable the global transition to renewable energy while enhancing grid reliability and energy security.

Battery Technology

Proprietary organic redox flow battery chemistry using carbon-derived organic salts dissolved in a pH-neutral, water-based electrolyte. The system integrates ion-exchange membranes for efficient, selective ion transport and is manufactured into scalable modules with membrane assemblies and electrolyte tanks, delivering a non-flammable, non-corrosive, and environmentally benign storage medium.

Products

Modular organic redox flow battery systems featuring carbon-based organic redox materials, pH-neutral water electrolytes, ion-exchange membranes, membrane assemblies, and electrolyte tanks. Optimized for scalable, long-duration grid storage with container-sized, grid-ready designs.

Recent Projects

Developing a prototype flow battery system designed to power a residential house to demonstrate practical scalability and validate technology, as a step toward container-sized, grid-ready battery deployments at renewable energy sites and distributed energy applications.

Investors

Flux XII Inc. completed a $1.0M pre-seed round with primary investors U.S. Venture Sustainability Accelerator, WARF Ventures, and Gigascale Capital.

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