Large-scale energy storage will be the key to resolving the stand-off between traditional power utilities such as Eskom and the renewable energy industry over the problem of sun and wind not being able to deliver electricity on demand. Eskom has opened a testing facility for different types of battery technologies at its Rosherville research centre, while the Industrial Development Corp (IDC) has teamed up with Bushveld Energy, a subsidiary of London-listed Bushveld Minerals, to investigate the viability of using locally mined vanadium for locally assembled utility-scale storage units called vanadium redox flow (V-flow) batteries. Bushveld Minerals CEO Fortune Mojapelo says V-flow battery technology is advanced and already in commercial production. Bushveld Energy has a relationship with US-based UniEnergy Technologies, which has developed some of the world’s largest V-flow batteries. Bushveld Minerals owns a substantial vanadium resource and sells a processed product to the global ...

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