Extreme heat across India is reducing labor productivity and increasing operating costs for manufacturers and construction firms [1, 2].
These temperature spikes threaten overall economic growth by forcing factories to cut shifts and straining the national power grid. As daily highs exceed 45 °C, the resulting loss in output creates a significant drag on the country's industrial performance [1, 2].
In Delhi, temperatures peaked at 48.2 °C on April 30 [1]. The heat has been particularly severe in Mumbai, Hyderabad, and the industrial belt of Gujarat [1, 3]. The impact on the workforce is immediate; construction sites have seen productivity drop by five% to six% when temperatures cross the 45 °C threshold, Rohit Sharma, a senior analyst at the Confederation of Indian Industry, said [2].
Industrial operations are facing rising costs to maintain output. Power demand surged by 12% in the last two weeks as factories operated extra cooling units to protect machinery and workers [3]. This spike in electricity consumption by industrial users reflects the growing cost of adapting to a warming climate [3].
Economists are now calculating the broader impact on national growth. Dr. Ananya Gupta, an economist at the Indian Institute of Management Ahmedabad, said the heatwave this April could shave as much as 0.3 percentage points off India’s GDP growth this year [1]. Other estimates suggest the economic loss could reach $10 billion, which represents roughly 0.5 percentage points of GDP [2].
These patterns mirror similar extreme heat events seen in May 2024, suggesting a recurring trend of climate-driven economic volatility [1, 2]. Government officials and delivery services continue to struggle with the logistics of maintaining essential services, while protecting workers from heatstroke and exhaustion [1, 2].
““We are seeing a 5‑6 % drop in productivity on construction sites when temperatures exceed 45 °C,””
The intersection of climate change and economic productivity in India reveals a systemic vulnerability in the country's industrial model. Because a large portion of the economy relies on outdoor labor and energy-intensive manufacturing, consistent temperature spikes above 45 °C act as a direct tax on GDP. The disparity in GDP loss estimates—ranging from 0.3 to 0.5 percentage points—underscores the difficulty in quantifying the full scale of indirect losses, such as long-term health impacts on the workforce and infrastructure degradation.
