
Tehri: India’s first variable-speed pumped storage plant adds third unit
Solar floods the grid at noon and vanishes at night. Pumped storage is the cheapest large-scale way to shift that power.
UPSC angle: Prelims: pumped storage, Tehri.
9 Dec 2025Daily notes mapped to syllabus topics, with “Asked before” PYQs and original practice MCQs.

Solar floods the grid at noon and vanishes at night. Pumped storage is the cheapest large-scale way to shift that power.
UPSC angle: Prelims: pumped storage, Tehri.
9 Dec 2025
PVTG hamlets are small and scattered, which is why normal PMGSY population norms missed them.
UPSC angle: Prelims: PVTGs, PM-JANMAN.
9 Dec 2025
India has many organic farmers but a small share of the market. Certification costs and residue rejections abroad are the usual problems.
UPSC angle: Prelims: NPOP, APEDA.
9 Dec 2025
This is a live question for news publishers, musicians and Indian-language creators whose work trains AI models.
UPSC angle: Prelims: Copyright Act, DPIIT. · Mains: regulating AI.
9 Dec 2025
Interoperability is why UPI scaled: any app can pay any bank account. The weak spot is revenue, since merchant payments carry zero MDR.
UPSC angle: Prelims: NPCI, PIDF. · Mains: digital public infrastructure.
8 Dec 2025
Smart meters cut billing theft and let discoms charge by time of day. Prepaid meters can upset consumers if rolled out without notice.
UPSC angle: Prelims: RDSS, TOTEX.
8 Dec 2025
Rooftop solar turns consumers into producers. Its growth depends on discom cooperation with net metering, which varies by state.
UPSC angle: Prelims: PM Surya Ghar.
8 Dec 2025
India imports more than half of its edible oil. Oil palm needs a lot of water, so planting is concentrated in the North-East, Andhra Pradesh and Telangana.
UPSC angle: Prelims: NMEO, oilseeds. · Mains: import dependence.
8 Dec 2025
Overbuilding at one stage of the chain while depending on imports at another is a known risk in industrial policy.
UPSC angle: Mains: solar supply chain.
7 Dec 2025
Intangible heritage means living practices: festivals, crafts, music. Listing brings attention but the real work is keeping the practice alive in communities.
UPSC angle: Prelims: ICH list, 2003 Convention.
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