Heatwave Boosts Power And AC Stocks; NTPC, Tata Power, Blue Star Gain

Shares of power companies moved higher in intraday trade on April 20 as temperatures increased across northern regions, according to market data. NTPC rose 1.31% to ₹398.75, Tata Power gained 1.77% to ₹435.15, and Adani Power advanced 2.62% to ₹203.70.

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Cooling appliance manufacturers also saw gains. Voltas gained 1.10% to ₹1,456, while Blue Star gained 2.30% to ₹1,909.10.

The rise in shares is based on expectations of higher temperatures and heatwave situations in certain regions of North India, which will fuel demand for electricity and cooling equipment.

IMD Issued Heatwave Warning

The India Meteorological Department (IMD) has issued an amber warning for heatwaves in Delhi, which is the first warning for the season as per official records. On April 19, the highest temperature in Delhi recorded was 40.1°C, which is 3°C higher than the average temperature.

According to IMD data, temperatures should stay between 41°C and 42°C on April 20 and 21. In some places, they could even reach 43°C between April 23 and April 25.

The weather agency attributed the rise in temperatures to hot north-westerly winds and prolonged sunshine hours across Delhi, Punjab, Haryana, and north Rajasthan.

Regulatory Development On Power Dues

Separately, the Appellate Tribunal for Electricity (APTEL) has rejected a request from the Delhi Electricity Regulatory Commission (DERC) to extend the deadline for clearing dues of around ₹30,000 crore, according to regulatory updates.

The dues are linked to payments owed to power distribution companies in Delhi under a broader settlement plan.

DERC was also looking for more time, considering its implications on the consumer tariff rates. Nevertheless, with this ruling, DERC will be forced to adhere to the current schedule of repayments.

This development comes after directions were given by the Supreme Court in August 2025, instructing the state electricity commissions to start clearing their outstanding bills from April 2024 until April 2028. The Supreme Court has also authorized the use of changes in the tariff structure to clear the overdue amounts.

Outlook for Electricity Demand

With the rise in temperature levels expected in the next few days, electricity demand is expected to remain high due to weather predictions and current trends.

The combination of weather-driven demand and regulatory developments kept power and cooling-related stocks in focus during the trading session.