Water battery plan stabilizes Honam grid and powers Korea chip cluster

South Korea's state utility KHNP is accelerating development of pumped-storage hydropower (water batteries) in the Honam region to stabilise grid supply for a 6.3 GW semiconductor cluster and data centres, targeting mid-scale 200+ MW plants by the early 2030s. The plan addresses solar intermittency and grid saturation whilst avoiding the fire risks of battery energy storage systems.

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