Unlock the Future of Energy Storage

Bring your clients a breakthrough in long-duration energy storage with The BESSt Company’s advanced Zinc Polyiodide REDOX flow technology—a next-generation solution designed for performance, reliability, and scale. Backed by a 30-year warranty and engineered for exceptional energy density, this is storage reimagined for a more resilient tomorrow.

Zinc Polyiodide REDOX Flow
Next-Generation Long Duration Energy Storage

  • Our Chemistry

    A classical reduction/oxidation (REDOX) flow battery using a proprietary zinc polyiodide chemistry. The base technology was developed by Battelle with exclusive licensing to The BESSt Company.

  • Performance

    320 Wh/L, making it 20X the energy density than some vanadium-based systems.

  • Lifespan

    Long cycle life with a more the 20-year life space for commercial and industrial (C&I) applications. Virtually unlimited life.

  • Safety

    Our battery is non-toxic and non-flammable. It uses two earth abundant minerals, zinc and iodide.

  • Configuration

    Our portfolio includes both membrane-based and membrane-less configuration. All of our designs are thoughtfully developed using the Design for Manufacturing (DFM) strategy, which uses modular designs and standardized components to simplify assembly, reduce costs, and ensure scalability.

  • Routine Maintenance

    Unlike lithium-ion, routine maintenance (over decades) may be required for mechanical components like pumps and valves, rather than replacing the battery itself.

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Innovation Realized

Large white energy storage container with the logo and name of The BESS Company on the side, situated on a gravel pad outdoors, surrounded by a low concrete barrier and green trees in the background.

These batteries aren’t just innovative—they’re transformative. Powered by a proprietary Zinc-Iodine flow chemistry, they’re redefining what’s possible in safety, modularity, and runtime. Unlike lithium or iron-based alternatives, The BESSt Company offers true long-duration capability with a flexible, site-ready footprint.

From microgrids to mission-critical infrastructure, The BESSt Company empowers commercial and industrial clients with energy security and independence—without compromise. It’s not just storage. It’s long-term resilience, cost control, and a lower-carbon future—all in one system.

Control your power — full facility backup, no compromise.

  • Challenging traditional redox flow battery technologies with a sustainable, accessible, and eco-friendly solution. What’s the difference? A great deal. We have exclusive rights to a propriety technology developed by Battelle on zinc iodide flow batteries. There is no other long duration battery like ours offering a safe & sustainable components, using no rare earth minerals and a 30-year warranty.

  • Backed by over 100-peer reviewed studies performed on redox flow batteries. The technology behind flow batteries is proven and derisked.

  • Zinc polyiodide is safer than lithium, longer lasting than traditional flow systems, and scalable. Our energy infrastructure is aging, adverse climate conditions are impacting our lives and the result is blackouts are becoming more common.

Distribute Tomorrow’s Energy—Today

Lead the transition to cleaner, smarter, more reliable energy.