Temperature shocks and corporate innovation: evidence from China

Why hot days matter for new ideas

Anyone who has tried to think clearly on a sweltering summer afternoon knows that heat can sap energy and focus. This study asks a bigger question: as heat waves become more common with climate change, do they quietly chip away at companies’ ability to invent new products and technologies? Focusing on Chinese manufacturing firms, the authors use detailed weather, financial, and patent records to show that high temperatures can slow the pace, structure, and quality of corporate innovation — and that these effects build up over time.

Tracking heat and inventions across a nation

The researchers assembled a large dataset covering more than fifteen thousand firm–year observations for Chinese listed manufacturing companies between 2007 and 2022. For each firm, they counted annual patent applications as a concrete indicator of innovation. Then they linked each company’s headquarters to precise daily weather data, tallying how many days per year exceeded 30 °C, a level where human performance has been shown to drop. They also counted very cold days below 0 °C, and controlled for many other influences, such as firm size, profitability, debt levels, research spending, ownership structure, and local rainfall and average temperature. Using statistical models designed for count data, they examined how past temperature extremes relate to later patenting.

Hot days weaken corporate creativity

The results reveal a clear pattern: years with more very hot days are followed by fewer patents. In contrast, unusually cold days show no consistent effect. Although the impact of a single extra hot day on a single firm is modest, the authors stress that the economic consequences are large once we consider the rapid rise in heat extremes and the huge overall volume of Chinese patenting. They also find that the damage from heat is not a one-off shock. High temperatures in several consecutive years have a cumulative, lingering effect on innovation, suggesting that companies do not fully adapt their facilities or strategies fast enough to offset the stress of repeated heat waves.

Who is hit hardest and how the damage happens

Heat does not hinder all companies equally. Firms with lower institutional ownership — that is, with fewer large, sophisticated investors keeping an eye on management — see a stronger drop in patents during hot years than better-governed peers. Companies with weaker profits are also more vulnerable, likely because they have less spare cash to maintain research spending when operating costs rise. Geography matters as well: manufacturers based in cooler regions react more sharply to heat than those in already hot areas, where people and infrastructure appear better adapted to sweltering summers.

People and productivity at the center

To understand why heat curbs innovation, the authors look inside firms. They show that more hot days are associated with fewer researchers on staff, consistent with skilled workers moving away from uncomfortable or unhealthy climates. At the same time, the researchers who remain appear less productive: when the authors divide patent counts by either total employees or research spending, these measures of innovation efficiency fall in hotter years. The drop is most pronounced for “strategic” and lower-level patents, such as minor design tweaks, while the most technically demanding invention patents are more stable. In other words, firms facing heat stress tend to cut back first on easier, short-term projects and on lower-quality innovations.

What this means for the future of business

For a general reader, the message is straightforward: climate change is not only about storms, floods, or damaged crops. It can also erode the flow of new ideas that underpin competitiveness and long-term growth. This study shows that frequent hot days can quietly shrink the pool of skilled researchers, dull their creative edge, and push firms to trim back certain kinds of innovation, especially in financially fragile companies and cooler regions. Building climate resilience — from better workplace conditions and power systems to stronger governance and support for research — is therefore not just an environmental concern. It is a key part of protecting the innovative capacity that modern economies rely on.

Citation: Yang, Y., Xie, S. & li, Y. Temperature shocks and corporate innovation: evidence from China. Humanit Soc Sci Commun 13, 332 (2026). https://doi.org/10.1057/s41599-026-06540-5

Keywords: climate change, heat waves, corporate innovation, human capital, China manufacturing