India's grid hits a record 270.8GW peak as a May heatwave forces coal to its limits
Demand reached 270.82GW on 22 May; air-conditioning now adds 60-70GW to peak, and coal is run to its flexibility ceiling to cover evening ramps
Summary
India's peak power demand hit a record 270.82GW at 15:45 on 22 May 2026 as New Delhi reached 45.3°C, beating an earlier 256GW record on 25 April. Peak demand has roughly doubled since 2013 (~135GW). Air-conditioning now adds an estimated 60-70GW to peak load, and night demand reached 251.96GW on 21 May, meaning the grid no longer cools off after dark. Thermal supplied 62% of generation at peak; domestic coal demand for power is projected at 233 million tonnes in April-June, up 11.5% year on year. With thin battery storage, operators run coal to its flexibility ceiling and burn costly gas to cover evening solar ramp-downs.
By the numbers
- 270.82 GW, record peak, 22 May 2026 (prior record 256GW, 25 April).
- 45.3°C, New Delhi temperature at the peak.
- 60-70 GW, estimated air-conditioning contribution to peak.
- 251.96 GW, night peak (21 May), daytime/nighttime gap closing.
- 233 Mt, projected Q2-2026 coal demand for power, +11.5% YoY.
Why it matters
India's load curve is being reshaped by heat and cooling faster than its storage and flexible generation can follow. The dependence on coal to chase the evening ramp locks in emissions and exposes the grid to fuel and ramping stress in every successive heatwave.
What to watch
- Whether IMD's above-normal June forecast triggers fresh records or load-shedding.
- Battery-storage and pumped-hydro additions targeting the evening peak.
- Coal stock levels at thermal plants through the monsoon transition.