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

Explanation:

Long duration energy storage

Pumped-storage hydropower is a method of storing and generating electricity that works by pumping water between two reservoirs at different elevations. During periods of low electricity demand, excess power is used to pump water from a lower reservoir to an upper reservoir. When electricity demand is high, water is released from the upper reservoir through turbines to generate electricity, much like a conventional hydroelectric dam.

This system allows for the storage of large amounts of energy over extended periods, making it an excellent solution for long duration energy storage. It’s particularly valuable for balancing the grid and storing excess energy produced by intermittent renewable sources like wind and solar power.