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Storage, batteries and electric mobility

Storing power and moving by electricity: battery storage and pumped storage, battery chemistries and manufacturing, electric vehicles and their charging, and the schemes that support them. It serves GS3 answers on energy and infrastructure.

Showing 2 of 4 subjects, those that changed from 16 to 31 July 2026.Show all

Energy storage: targets and long duration storage

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Prelims and Mains

Round trip efficiency is the share of stored energy that can be taken back out. Pumped storage returns 70 to 80 per cent. Long duration storage discharges for eight hours or more and includes flow batteries, compressed air and thermal storage.

What changed

  1. 27 Jul 2026Update

    • The National Electricity Plan projects 47.24 GW of battery storage and 26.69 GW of pumped storage by 2031 to 32. Closed loop pumped storage projects away from rivers no longer need concurrence from the Central Electricity Authority.

    PIB, 27 Jul 2026: GRID STABILITY AND ENERGY STORAGE (opens in a new tab)

  2. 21 Jul 2026New subject

    • India's peak demand reached 270.8 GW on 21 May 2026 and now rises again at night with air conditioning. Planned battery and pumped storage discharge for roughly four to six hours, which covers the daily swing but not a long spell of low generation.

    The Hindu, 21 Jul 2026: India's green transition is missing long-duration energy storage (opens in a new tab)

Delhi Electric Vehicles Policy, 2026

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Prelims and Mains

Delhi's electric vehicle policy sets dates after which only electric vehicles of a given class may be registered in the city, beginning with three wheelers and light goods vehicles and then two wheelers.

What changed

  1. 29 Jul 2026Update

    • Electric, hybrid and compressed natural gas vehicles together crossed 40 per cent of passenger vehicle sales in June 2026. Gas accounted for 24.3 per cent, hybrids 8.3 per cent and electric vehicles 7.8 per cent.
    • About 63 per cent of electric vehicle sales were two wheelers.

    Mains: the shift away from petrol and diesel in cars is being led by gas and not by batteries.

    The Indian Express, 29 Jul 2026: Alternative-fuel vehicles cross 40 per cent of passenger vehicle retail sales in India for the first time (opens in a new tab)

  2. 16 Jul 2026New subject

    • Only electric three wheelers and light goods vehicles may be registered in Delhi from 1 January 2027, and only electric two wheelers from 1 January 2028.
    • The two wheeler target is the hard one: they are about two thirds of the fleet and only 1.7 per cent are electric.

    The Hindu, 16 Jul 2026: How challenging will Delhi's ambitious EV transition be? The Hindu ePaper, 16 July 2026 (opens in a new tab)