Europe is experiencing significantly elevated electricity prices amid a widespread heatwave that has boosted demand for cooling while simultaneously reducing power generation capacity across the continent.
Great Britain’s energy system operator paid approximately £470 per megawatt-hour to secure electricity imports from continental Europe during peak evening hours on Tuesday, representing more than six times the average price from the same period last year, which stood at about £71 per megawatt-hour. The spike reflects the acute shortage of available supply during critical demand periods. Germany’s power market, the continent’s largest, saw prices forecast to exceed €545 per megawatt-hour on Tuesday evening, marking the highest level since June 2024, while France’s market prices climbed above €268 per megawatt-hour, the highest since August 2023.
The price increases stem from a combination of reduced renewable energy generation and unplanned outages at conventional power plants. High-pressure weather systems have slowed wind speeds across the region, diminishing output from wind farms that typically provide significant portions of regional electricity supplies. Nuclear plants in France have experienced reduced output due to elevated river water temperatures affecting cooling systems for reactors. In Great Britain, five gas plants reported capacity reductions due to extreme heat conditions, cutting approximately 2.5 gigawatts from the national gas generation fleet—roughly equivalent to powering 2.5 million homes and representing a 40 percent increase in capacity loss compared to pre-heatwave levels.
While solar farms typically lose efficiency in very high temperatures, clear skies across much of the region have helped maintain solar output at steady levels. Wind power generation, however, has declined substantially, contributing between 13 and 15 percent of Great Britain’s electricity supply on Tuesday compared with a typical June average of approximately 30 percent. In response to the strain on the system, authorities have implemented demand reduction programs that encourage households to curtail electricity consumption during peak hours, with participation expected to conserve approximately 115 megawatts of electricity.
Official sources characterized the market response as standard operating procedure for managing grid stability during extreme weather conditions, though the unprecedented pricing levels underscore the broader challenges facing European energy systems during climate-driven demand spikes.
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