Official Answer Key & Detailed Solution
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Correct Answer: Option (C) — Long duration energy storage
Concept & Option Breakdown
Standard Reference VerifiedPumped-storage hydropower (PSH) is a type of hydroelectric energy storage where water is pumped from a lower reservoir to an upper reservoir during periods of low electrical demand and released through turbines back down during peak hours. It provides long-duration grid energy storage and grid balancing for variable renewable energy sources like solar and wind.
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