Heatwaves across Europe could shave €180 billion off the European Union's gross domestic product, Triodos Bank economists estimate, as extreme temperatures disrupt energy production, river transport and agriculture. In France, up to 15% of the nuclear fleet risks shutdown due to elevated river temperatures, while low water levels on the Rhine at Kaub have forced barges to lighten loads.
The financial toll is mounting unevenly. Moody's estimated that summer 2025 heatwaves caused €43 billion in European losses, yet insurers paid out roughly €500 million. In Italy, over 80% of hospitality firms in Padua reported 20% revenue drops during the latest heatwave, reflecting a broader insurance gap: only 28% of small and medium enterprises held business interruption coverage, a 2023 regulator survey found.
Western Europe logged its hottest June-July period on record, with mean temperatures reaching 21.62°C, Copernicus data shows. Some companies are capitalising: Groupe SEB reported a 30% rise in European fan sales, while Beiersdorf said June 2026 sunscreen sales were unprecedented.