SunCast 915: 100-Hour Batteries, State of Flow, and the Future of Grid Resilience
Mar 28, 2026
Tristan Bannon, CellCube CCO, veteran of vanadium flow systems. Aric Saunders, Noon Energy commercialization lead, building a 100-hour reversible electrofuels approach. Anna Siefken, LDES Council policy director, advocating market design for long-duration storage. They discuss 100-hour and multi-hour storage technologies, vanadium and zinc chemistries, rising commercial momentum, resilience needs, and procurement and policy barriers.
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Noon’s 100 Hour Reversible Electrofuels Story
- Noon developed a 100-hour reversible electrofuels battery using reversible solid oxide fuel cells and industrial gases as storage media.
- Aric Saunders says this ultra long duration approach targets hundreds of hours to firm renewables and deliver clean firm power in many geographies.
CellCube’s Longstanding Vanadium Flow Deployments
- CellCube has manufactured vanadium redox flow batteries for 25 years with projects across multiple continents and 30-year lifespans at ~90% performance.
- Tristan Bannon highlights vanadium flow advantages: scaleable 4–24 hour duration, safe aqueous electrolyte, and cold/hot operation for resilience use cases.
e-Zinc’s 24 Hour Zinc Metallization Deployment
- e-Zinc's electrochemical zinc system targets 10–100 hour flexible storage with a focus on 24-hour deployments for backup and diesel replacement.
- Andrew Friedenthal notes e-Zinc will deploy the first electrochemical cell offering 24 hours of backup storage nearby.