Recently, the term “pumped-storage hydropower” is actually and appropriately discussed in the context of which one of the following ?
AIrrigation of terraced crop fields
BLift irrigation of cereal crops
CLong duration energy storage
DRainwater harvesting system
Answer & Solution
Correct answer: C. Long duration energy storage
Answer: C. 'Pumped-storage hydropower' is discussed in the context of LONG DURATION ENERGY STORAGE.
Pumped-storage hydropower (PSH) is a grid-scale energy storage technology. Excess electricity (typically from renewables or off-peak generation) pumps water from a lower reservoir to an upper reservoir; during peak demand the water is released downhill through turbines to generate electricity. Net effect: storing electrical energy as gravitational potential energy.
This is the dominant form of long-duration energy storage worldwide (over 90% of global storage capacity). India is rapidly expanding PSH to balance growing solar and wind capacity. The Ministry of Power released a PSH policy framework in 2023.
Distractors fail: irrigation (A, B) does not move water uphill for energy storage; rainwater harvesting (D) is a water-conservation method, not energy storage.
Source: Ministry of Power PSH Policy 2023 / Central Electricity Authority reports.
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