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Early Summer Heat Spurs Power Demand Surge, but Stock Valuations Call for Selective Bets

An early onset of intense summer conditions is emerging as a key driver for India’s power sector, with rising temperatures expected to significantly boost electricity demand. While this trend is improving the near-term outlook for power generation and distribution companies, analysts advise investors to remain cautious rather than adopting a broad-based investment strategy.

According to the India Meteorological Department (IMD), temperatures during March to May 2026 are likely to remain above normal, with an increased number of heatwave days. This is expected to drive strong electricity consumption, particularly due to cooling requirements, supporting demand growth in the coming months.

Higher demand is likely to improve plant load factors (PLFs) for thermal power producers and increase power offtake, which could positively impact earnings in the first quarter of FY27. Analysts suggest focusing on utilities with stable, regulated returns, integrated operations, fuel security, and clear mechanisms to pass on costs.

However, the rising demand may also strain the power system. Peak electricity demand, which has already reached around 240–244 GW in recent weeks, is projected to climb further. Estimates indicate it could touch 275–285 GW during the day and 260–270 GW in the evening during peak summer, potentially leading to supply gaps—especially during high-demand evening hours.

Weather-related risks could add to the challenge. A possible shift towards El Niño conditions later in 2026, combined with below-normal rainfall forecasts, may tighten supply conditions. Additionally, reduced winter precipitation—often referred to as a “snow drought”—could limit hydropower generation during summer, as lower reservoir inflows reduce output capacity.

Hydropower has traditionally played a crucial role in meeting evening peak demand alongside thermal and solar sources. Any reduction in its contribution may further increase reliance on thermal generation and spot market purchases.

Data suggests that rising temperatures have a direct impact on electricity usage. Studies indicate that for every 1°C increase above 24°C, power demand can rise by around 2%. Notably, temperatures in northern India were already up to 6.5°C above normal in February 2026, signaling a potentially demanding summer ahead.

From a market perspective, power sector stocks have already seen gains this year, reflecting optimism around demand growth. Companies with exposure to merchant power markets and strong financials may benefit from higher tariffs and improved utilisation rates during peak demand periods.

Despite this, analysts caution that much of the expected upside may already be factored into current valuations. As a result, a selective investment approach—focusing on fundamentally strong and well-positioned companies—may be more prudent than broad exposure to the entire sector.