Environment/Energy Security · 8 Aug 2026

hydropower reservoir energy content

With reference to India's hydropower reservoir data for April-July 2026 tabled in Parliament, which one of the following statements is NOT correctly described?

AAll-India hydro reservoir energy content fell by 43% year-on-year during the period.
BThe Southern region recorded the steepest year-on-year decline in reservoir energy content among all regions.
CThe Western region recorded a steeper year-on-year decline in reservoir energy content than the Eastern region.
D23 of India's 30 major hydro reservoirs recorded lower water levels than in the prior year.

Tests precise recall and comparison of regional data rankings rather than a single aggregate fact, requiring depth beyond the headline national figure.

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About this question

Why in news

Ministry of Power data tabled in Parliament showed India's hydro reservoir energy content down 43% nationally, with the Southern region collapsing 63% year-on-year, prompting increased reliance on coal-fired generation to cover the shortfall.

Why for UPSC

UPSC increasingly tests whether aspirants remember not just an aggregate national figure but the actual regional disaggregation and ranking beneath it - exactly what a "NOT correct" question with a plausible-sounding but reversed regional comparison probes.

Prelims summary

India's hydro reservoir energy content fell 43% nationally (April-July 2026), with Southern India recording the steepest regional decline at 63%, followed by Eastern (-28%), Northern (-25%), North-Eastern (-22%) and Western (-13%) - the mildest decline of any region.

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