Redflow

Redflow Limited, established in 2005 in Brisbane, was an Australian manufacturer specializing in zinc-bromine flow batteries. Their innovative, fire-resistant energy storage solutions supported telecommunications, commercial, industrial, and residential applications, enabling renewable energy integration. With installations in over 250 sites across nine countries, Redflow advanced long-duration storage technology for diverse power systems.

Company Location

Country:

Australia

City:

Brisbane

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Company Overview

Redflow Limited, founded in 2005 in Brisbane, Australia, specialized in manufacturing zinc-bromine flow batteries for telecommunications, commercial, industrial, and residential energy storage, enabling long-duration renewable integration.

Battery Technology

Aqueous zinc-bromine flow battery technology (ZBM3), featuring 10 kWh fully depth-dischargeable modules, water-based electrolyte for inherent fire resistance, 70–80% efficiency, and superior thermal stability without cooling or heating.

Products

Products include the ZBM3 10 kWh module; Quadpod system (4×ZBM3 for 40 kWh); Energy Pod200 (20×ZBM3); and the in-development X10 utility-scale flow battery in partnership with Stanwell.

Recent Projects

Installed a 2 MWh commercial/industrial system in California; planned a 20 MWh California project; secured US Department of Energy microgrid support; projects halted when Redflow entered administration in 2024.

Investors

Simon Hackett (2.4%), Mfs Fund Pty Ltd (1.1%), Simon Mark Fagg (0.9%), Dowling Properties Pty Ltd (0.8%), John Richard Serisier (0.6%). The company lacked further funding and ceased operations in 2024.

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