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हिन्दी — Read in HindiStorage, batteries and electric mobility
Battery and pumped storage, cell manufacturing, electric vehicles and their charging, and the schemes that support them. It serves GS3 answers on energy and infrastructure.
Foundation note: How a battery works, and the chemistries in play
Showing 1 of 4 articles, those that changed from 1 to 31 August 2026.Show all
Pumped storage
Copy link to Pumped storagePrelims and Mains
A pumped storage project pumps water uphill when power is cheap and releases it through turbines when demand peaks, so it stores energy rather than generating it.
- Solar power arrives in the afternoon and demand peaks after dark, and carrying water uphill is the oldest way to carry power across those hours.
- Pumping costs more power than the plant returns, which makes a pumped storage project a net consumer of electricity and a store of value only when the price gap is wide enough.
What changed
28 Aug 2026New
- The Karnataka High Court froze the 2,000 MW Sharavathi pumped storage project, which lies entirely inside the Sharavathi Valley Lion-Tailed Macaque Wildlife Sanctuary.
- An expert committee under the National Board for Wildlife had recommended against it.
- Katlekan's forest there holds endemics such as the Katlekan marsh nut and the Gund day gecko.
UPSC has asked
- Prelims 2024: the context in which pumped storage hydropower is discussed
- Prelims 2013: States where the lion-tailed macaque is found