The Energy Reliability Paradox of a Hotter Europe

Europe’s hotter and drier climate is making power-system resilience and flexibility as important as low-cost generation capacity.

• In summer 2026, England and Wales recorded their driest July ever, while France imposed water limits across almost 70% of the country during its most critical drought on record.
• Low Danube water levels temporarily shut Hungary’s only nuclear plant, which supplies about 40% of national electricity, while France shut 3 of its 57 nuclear plants and curtailed output at 7 others, reducing nuclear production by 9%.
• Heat and water shortages also disrupted fossil-fuel generation: five UK gas plants curtailed 2.5GW in June, and Italian cooling-water shortages threatened up to 20GW, or nearly one-third of thermal capacity.
• Solar output rose 17% during the June and July heatwaves; EU solar generation reached 52TWh in June and 55TWh in July, providing 25% of total generation in each month.
• Battery storage, demand response and interconnection can shift surplus daytime solar into evening peaks and provide rapid-response capacity when conventional generation is constrained.

Takeaway: Investors should assess energy infrastructure by its ability to deliver reliable, flexible and climate-resilient power, creating opportunities across generation, storage and transmission rather than in generation capacity alone.