Cooling doctrine: On India's response to extreme heat

📌 Summary:

• Context: India's annual response to extreme heat has become a "familiar choreography" — NDMA tallies preparedness, states publish Heat Action Plans (HAPs) but indoor temperatures keep climbing
• Core argument: Heat Action Plans have hit their structural limit; India needs a national cooling doctrine that treats sustained access to safe indoor temperatures as a public-health entitlement
• Causal chain — why current HAPs fail: (1) NDMA itself concedes HAP quality is uneven — many are copy-paste imitations of plans from elsewhere (2) Implementation leans on short-term palliatives — water kiosks, public advisories, shaded bus-stop waiting areas — which save lives at the margins but don't reduce underlying exposure (3) Tens of millions of Indians work, commute and sleep in conditions becoming "biologically untenable" — informal workforce structurally outside the cooling envelope (4) Imported "Global North" solutions don't fit: India's heat is wetter, longer and more humid than dry European summers that produced existing cooling literature (5) Energy poverty — Indian grid delivers at most ~60% of installed capacity even on best days; most households cannot afford energy bills of western-style mechanical cooling
• Key data: Indian electricity grid delivers max ~60% of installed capacity; 16th Finance Commission recommended notifying heatwaves as a national disaster (unlocks dedicated central funding under SDRF/NDRF)
• India's specific vulnerability: Hot-humid climate (wet-bulb temperature risk); large informal & outdoor workforce (construction, agriculture, delivery, street vending); inadequate housing stock; grid constraints; affordability gap for ACs
• Solutions proposed: (i) National Cooling Doctrine — sustained safe indoor temperatures as public-health entitlement (ii) Mandatory minimum cooling standards for indoor workplaces (factories, warehouses, commercial kitchens, call centres, delivery hubs) with honest inspection regime (iii) Technology: passive cooling materials, reflective roofing at scale, district cooling systems for dense urban zones, cheaper efficient ACs calibrated for Indian grids (iv) Notify heatwaves as a national disaster (16th FC recommendation) → dedicated central funds (v) Avoid uncritical import of temperate-zone cooling templates — design India-specific humid-heat solutions
• Comparative angle: Europe's heatwave literature is built around dry summers; India needs wet-bulb-aware responses — a research/doctrine gap

🎯 UPSC Relevance: GS3 (Disaster Management – heatwaves, NDMA; Environment – climate adaptation) and GS2 (Health entitlements). Tests NDMA, SDRF/NDRF, 16th FC recs, Heat Action Plans, climate adaptation.

📝 Prelims Facts:

• NDMA — set up under Disaster Management Act, 2005; chaired by PM
• 16th Finance Commission — chaired by Arvind Panagariya; period 2026-31
• Currently 12 "notified disasters" under DMA 2005 (cyclone, drought, earthquake, fire, flood, tsunami, hailstorm, landslide, avalanche, cloudburst, pest attack, frost/cold wave); heatwave NOT currently notified
• SDRF (state) and NDRF (national) — Centre-State funding ratio for general states 75:25; for special category 90:10
• IMD heatwave threshold: plains ≥40°C with ≥4.5°C departure, OR ≥45°C absolute; coastal ≥37°C; hilly ≥30°C
• India's installed power capacity utilisation: ~60% (May 2026 editorial)

🔑 Key Term: Wet-bulb temperature — temperature accounting for both heat and humidity; a sustained wet-bulb of ~35°C is the physiological limit for human survival without artificial cooling; India's humid heat hits this threshold faster than dry-heat regions.