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French heatwave to cut nuclear output by about 15% on Friday
Data from Electricite de France (EDF) shows that due to the fifth heatwave of the European summer, French nuclear power output is expected to fall by about 15% this Friday. At that time, nine reactors are expected to be affected, with total nuclear output reductions reaching 9.4 gigawatts during peak hours, of which six reactors will be completely shut down. This summer, many parts of Europe have experienced sustained high temperatures, with some regions seeing temperatures rise to abnormal levels, triggering issues such as water shortages and wildfires. French meteorological authorities predict that this heatwave will peak on Thursday, with temperatures across most of the country ranging between 35 and 40 degrees Celsius. From Friday, cold air from the west will first affect the Atlantic coast and the English Channel region...
2026-08-14
French heatwave cuts nuclear output, day-ahead power prices surge 22%
A new heatwave in France is hitting its nuclear power supply, with effects quickly transmitting to the electricity market. On Tuesday morning local time, LSEG data showed French day-ahead power prices rose as much as 21.8% to €142.5 per megawatt-hour, equivalent to approximately $164.39. The direct cause of the price surge is that operators expect nuclear output to be constrained during the midday peak demand period on Wednesday. Data from French utility EDF shows that due to this week's heatwave, France's nuclear generation capacity on Wednesday is expected to be reduced by 7.3 gigawatts, equivalent to 12% of total installed capacity. This marks at least the fifth time France has experienced extreme heat since June. For a country where about 70% of electricity comes from nuclear power, nuclear...
2026-08-12