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UPSC Prelims 2024GS1Environment & EcologyPumped-Storage Hydropower

Q98. Recently, the term "pumped-storage hydropower" is actually and appropriately discussed in the context of which one of the following?

A. Irrigation of terraced crop fields
B. Lift irrigation of cereal crops
C. Long duration energy storage✓ Correct
D. Rainwater harvesting system

Detailed Solution

✓ Correct Answer: Option C

Pumped-storage hydropower (PSH) is a type of hydroelectric energy storage system. It involves two reservoirs at different elevations. During periods of low electricity demand, water is pumped from the lower reservoir to the upper one, storing energy.

When electricity demand is high, water is released from the upper reservoir to the lower one, flowing through turbines to generate electricity. This process makes PSH an effective method for long-duration energy storage, balancing grid fluctuations and integrating intermittent renewable energy sources like solar and wind.

The other options (irrigation, rainwater harvesting) are related to water management but do not directly describe the primary function and context of pumped-storage hydropower. This question assesses understanding of renewable energy technologies and their role in energy security, a key topic in Environment & Ecology and Current Affairs.

Current Affairs Link

The term 'pumped-storage hydropower' is frequently discussed in news related to renewable energy and grid stability.

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