What are the main infrastructure and environmental impacts of Europe's latest heat wave, according to the news?

The latest heat wave is straining water supplies—causing up to a 20% rise in water consumption in France, including in rural and agricultural areas—and pressuring power grids, notably forcing Electricite de France SA to take the 1,310-megawatt Golfech nuclear reactor offline until July 16 due to environmental concerns from high temperatures and low river levels; EDF also warned it may limit output from other nuclear plants because of low water levels in the Meuse River and high temperatures in the Garonne and Rhone rivers. Additionally, the prolonged hot, dry weather is heightening wildfire danger across France, Spain, Portugal, and Greece, prompting the European Union to deploy a record number of firefighters and 22 firefighting aircraft this summer.

Which countries and regions have issued the highest-level heat alerts, and what peak temperatures are forecast?

The UK health authorities issued amber heat warnings for the southern half of England, where London is forecast to exceed 30°C (86°F) and peak at 33°C on Thursday; parts of southwest France are forecast to approach 40°C on Tuesday, while temperatures near the Mediterranean coast could reach 42°C on Wednesday and Thursday. Amber warnings are in place across much of France and eastern Portugal, and Spain’s weather agency AEMET issued red alerts for parts of the northeast, where highs could also reach 42°C.

Europe’s Latest Heat Wave Raises Pressure on Water, Power Grids

Jul 7, 2026

Europe's heat wave strains water and power grids, driving a 20% rise in agricultural water use and forcing EDF to curtail nuclear output due to high temperatures and low river levels.

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