Redox One’s Iron-Chromium Redox Flow Battery technology stores energy via reversible redox reactions of iron and chromium ions in an acidic electrolyte circulating through flow cells. It features a non-flammable, benign electrolyte, modular decoupling of power and energy capacity, recyclable components, and durable chemistry lasting decades with minimal degradation, enabling safe, sustainable, and scalable multi-hour to multi-day energy storage.
Demonstration units include a 40 kWh flow battery and a 5 kW system with eight hours of duration, showcasing modular scalability and long-duration storage performance.
At its Electrolyte Development Center in South Africa, Redox One deployed demonstration units including a 40 kWh flow battery and a 5 kW, eight-hour system, validating performance and longevity under real-world conditions and demonstrating its mine-to-megawatt supply chain integration.
Backed by parent company Tharisa PLC, funded through equity and resources from the mining group.
