India Leans on Coal as Severe Heatwave Drives Record Power Use

Key Takeaways

• Coal supplied 62% of electricity on record‑demand day
• Peak demand hit 270.8 GW, a new all‑time high
• Temperatures topped 47 °C, with night lows above 31 °C
• Solar contributed 22% of generation, wind and hydro each 5%

Pulse Analysis

India’s May heatwave has turned the nation’s power grid into a stress test for its energy mix. With temperatures soaring to 47 °C and night‑time lows lingering above 31 °C, households and businesses cranked up air‑conditioning, driving demand to a historic 270.8 GW. Coal‑based thermal plants, which still dominate the sector, shouldered 62% of the load, while solar’s share rose to 22%—the highest daily contribution in recent years. The surge illustrates how extreme weather can instantly reshape consumption patterns, exposing the fragility of a system still heavily dependent on fossil fuels.

The episode raises critical questions for India’s climate agenda. The country has pledged net‑zero emissions by 2070, yet the reliance on coal during peak heat reveals a gap between policy and operational reality. Grid operators warned of overstretched infrastructure, and localized blackouts were reported despite overall supply adequacy. To reconcile reliability with decarbonisation, India must accelerate renewable deployment, bolster storage solutions, and modernise transmission networks. The current 5% contributions from wind and hydro are insufficient to offset coal’s dominance during demand spikes.

Looking ahead, the persistence of the heatwave—forecast to continue for another week—means the power crunch may deepen. Investors and policymakers are likely to scrutinise the economics of expanding solar capacity, especially in high‑insolation regions, and the role of emerging technologies such as battery storage and demand‑response programs. Strengthening grid resilience will also become a priority, with potential reforms in tariff structures to incentivise off‑peak consumption. Ultimately, how India navigates this short‑term crisis will shape its long‑term energy transition and its credibility on the global climate stage.