Summary
But the sun sets and the wind stops, so they need batteries that can hold energy for many hours.
Small batteries that work for only a few hours aren't enough, and big long‑lasting batteries cost more.
Key Points
4 points1
India is adding clean energy like solar and wind.
2
Energy needs to be stored for more than six hours.
3
Short‑time batteries aren't cheap enough for that.
4
Long‑time storage is needed but is expensive.
New Words to Learn
6 wordsgreen transition
changing to energy that does not hurt the Earth
energy storage
saving electricity for later use
economics
how money and costs work
discharge
when a battery gives out its power
duration
how long something lasts
cost‑effective
good value for the money spent
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