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European electricity prices rise as heatwave reduces French nuclear production and German wind

The fifth summer heatwave has pushed up European spot electricity prices by more than 20%. High temperatures are expected to curtail French nuclear power production, and German wind speeds will slow. Heatwaves have caused unprecedented temperatures in Europe, leading to water shortages, fires and even deaths. The French day-ahead electricity prices soared by 21.8%, to EUR142.5 ($164.35), per megawatt hour. In Germany, the contract increased by 22.8%, to EUR138.50/MWh.

EDF data shows that the French nuclear production is likely to be limited at its midday peak by 7.3 gigawatts, or about 12% of their entire fleet. France depends on nuclear energy for 70% of its total energy production. Four units will be limited due to the high temperatures of water. Two French reactors will be completely offline. A third?nuclear?reactor is also expected to be shut down due to low river levels. Alessandro Armenia, a Kpler analyst, said that the heatwave in France is expected to peak from Wednesday - Friday. "I'd expect shutdowns from Tuesday or Wednesday and they could last until next week," he added. French regulations limit the amount of heat that plants can discharge in rivers to protect the environment, so reactors are forced to reduce output during heatwaves. LSEG data shows that German wind output will drop from 8.1 GW down to 4.7 GW. This is about 60% lower than the average at this time of the year. Heatwaves can bring still weather and limit wind power. This increases reliance on gas, which has become more expensive due to the ongoing disruptions at the Strait of Hormuz. Germany's increasing reliance on solar and wind has replaced coal and gas, so the country must ramp up gas turbines when wind speeds drop. Nuclear shortages also have a ripple effect across borders. Armenia stated that the outages have a direct impact on Britain and Germany, as nuclear exports are cheaper than coal & gas plants which set prices in neighboring countries. As people use air conditioners and fans, the heatwave will increase demand for electricity.

Meteo-France has said that the heat will continue to increase Thursday and Friday with temperatures reaching between 35 and 39 degrees Celsius across most regions. However, it could begin to cool down over the weekend.

(source: Reuters)