A historic European heatwave is disrupting energy, transportation, agriculture, and industry, triggering emergency measures as governments confront growing strain on growth.

Experts warn the heat and drought could cost up to €180 billion ($208 billion) in 2026, roughly 1% of GDP, driven by lower productivity and widespread disruptions across energy, farming, and transport.

Wildfires and extreme heat are causing widespread environmental and physical damage, forcing thousands to evacuate and destroying properties across France, the UK, Spain, Germany, and the Balkans.

Low seasonal gas stocks and uncertain LNG supplies threaten winter resilience and could raise costs to refill storage.

EDF says recent reactor closures have limited impact on overall electricity production and safety, but the episode underscores energy-security concerns amid constrained supply.

Higher cooling demand is lifting electricity usage and prices, while nuclear and hydro output may falter, increasing reliance on gas or imports.

Hungary has kept the Paks plant partially offline since late July due to cooling-water concerns, illustrating cooling-related shutdown risk.

Markets are signaling higher insurance and operating costs, with climate-risk scrutiny rising for utilities and corporations.

France granted a temporary deviation to thermal discharge limits at the Bugey plant to avoid a reactor shutdown, while other reactors along the Rhone, Garonne, and Donzère-Mondragon were scaled back or halted due to water temperature or low levels.

The situation remains dynamic as heat duration and reactor restarts will shape near-term electricity markets and risk assessments.

Experts warn such incidents will become more frequent with climate-change-driven droughts and heat, affecting cooling and prompting regulatory and operational adjustments at nuclear plants.

Some regions are adapting, such as England’s farmers harvesting at night to preserve moisture and maintain crop quality, with industry shifting freight to trucks and rail to navigate low water.