Elevated temperatures across Europe have triggered a significant spike in electricity prices as millions of residents activate air conditioning and cooling devices, while simultaneously reducing the continent’s power generation capacity. The combination of these factors has strained energy markets, with wholesale electricity costs reaching their highest levels in several years.
Great Britain’s experience exemplifies the market pressures, with the country’s grid operator paying approximately £470 per megawatt-hour for electricity imports during peak evening hours on Tuesday. This price represents more than six times the average rate from the previous year and more than triple the cost from just one day earlier. Germany, Europe’s largest electricity market, saw prices forecast to exceed €545 per megawatt-hour on Tuesday evening, marking the highest level since June 2024, while France’s market price climbed above €268 per megawatt-hour, the highest since August 2023.
The heatwave has disrupted power generation across multiple sources. Reduced wind speeds associated with high-pressure weather systems have curtailed wind farm output, while thermal plants in France have experienced reduced efficiency due to elevated river temperatures affecting cooling systems. Additionally, five gas-fired power plants in Britain reported reduced output due to extreme temperatures, cutting approximately 2.5 gigawatts from the country’s generation capacity, equivalent to about 40 percent higher losses than typical conditions. Solar generation has remained relatively stable due to clear skies offsetting the efficiency losses from elevated panel temperatures.
Authorities have implemented various measures to manage the strain on energy systems. Britain’s grid operator secured approximately 1.5 gigawatts of additional electricity imports to meet evening peak demand, while simultaneously encouraging household participation in a demand-reduction scheme offering financial incentives for cutting consumption during peak hours. System operators have characterized these balancing actions as routine components of grid management, though the magnitude of price movements reflects the severity of current conditions across European energy markets.
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