Solar buoyed Europe’s grid amid record-breaking heat and drought this summer

The European continent experienced an unprecedented summer in 2026, marked by record-breaking heat waves and severe drought conditions. These extreme weather events tested the region's energy infrastructure, putting pressure on various power sources. While wind power struggled under stagnant conditions caused by heat waves, and thermal power plants like nuclear, gas, and coal plants had to reduce their output due to low water levels in cooling systems, solar power emerged as a resilient alternative.

Solar energy performed exceptionally well during the summer, generating 17% more power than usual, which helped stabilize the grid as cooling demand rose in the afternoons. Battery systems further facilitated this solar power output by supplying electricity in the evening hours when temperatures remained high and air conditioning use remained elevated.

The summer's extreme heat also raised electricity demand by 28% in Italy and 14% in France compared to the previous week, causing electricity and natural gas prices to spike in the evening hours. Power generation in some areas fell as demand climbed, with the UK reducing gas plant output by 2.5 gigawatts due to decreased cooling efficiency, and France experiencing a 18% loss of nuclear capacity due to environmental factors.

As Europe continues to warm, experts emphasize the importance of solar energy and battery storage in managing future extreme temperature events. The continent's cooling demand is expected to grow, with only 23% of households currently having access to air conditioning, compared to 90% in the United States. To adapt, France has planned to invest over $10 billion over the next 15 years to modify its nuclear and hydropower plants to tolerate warmer temperatures and reduced water availability, including improvements to nuclear plant cooling systems.