China operates the world's largest vanadium redox flow battery, commissioned December 31, 2025; Invinity deployed 20.7 MWh in the UK in May 2026 as the West builds non-Chinese VRFB capacity; Vanadium Resources secured a US offtake for South African ore in April 2026
A transition metal that hardens steel rebar and stores renewable electricity in flow batteries, with China controlling roughly 60% of global supply as of mid-2026.
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