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French nuclear power sets record unavailability rate due to high temperatures and drought, one-sixth of capacity constrained

France's nuclear power system is under exceptional strain. Affected by persistent high temperatures and low river water levels, nuclear reactors operated by French utility EDF have recorded unprecedented unavailability. According to an AFP tally based on data published by EDF since 2015, on the afternoon of Sunday, August 9, 2026, the nuclear capacity shortfall caused by drought and extreme heat reached 15.6% of installed capacity, equivalent to roughly one-sixth of France's nuclear power capacity being temporarily unable to supply electricity normally. The cause of this disruption is not simply equipment failure, but is closely linked to the natural environment on which nuclear plant operations depend. Many nuclear plants draw water from rivers for cooling; when river levels are too low or water temperatures too high, the...

2026-08-11

After only 4 days of restart, Unit 2 of France's Golfech Nuclear Power Plant shut down again due to Garonne River water temperature approaching limit

On the evening of August 8, French utility EDF (Électricité de France) once again shut down Unit 2 of the Golfech Nuclear Power Plant, just four days after the unit had been restarted. The direct cause of this shutdown was that the water temperature of the Garonne River was expected to reach 28°C on August 9, hitting the local operational limit. Since Unit 1 had already been taken offline for maintenance and fuel replacement, the closure of Unit 2 left both reactors at the Golfech plant simultaneously out of service, with the station temporarily ceasing power generation. Located in the Tarn-et-Garonne department of France, the Golfech Nuclear Power Plant was commissioned between 1991 and 1994, and features two 1,300 MW pressurized water reactor units. It draws cooling water from the Garonne River and dissipates heat through natural-draft cooling towers. According to EDF dat...

2026-08-10

France's Golfech Nuclear Power Plant Reconnected to Grid After Shutdown Due to High Temperatures

French utility EDF (Électricité de France) announced that the Golfech nuclear power plant, located in the Tarn-et-Garonne department, has been reconnected to the grid. Unit 2 of the plant was restarted around noon on August 7, following a forced shutdown on July 29 due to high-temperature weather. At the time of the shutdown, Unit 1 was in the maintenance and refueling phase, making the interruption of Unit 2 more impactful on plant operations. The direct cause of the shutdown at Golfech was that the water temperature of the Garonne River reached regulatory limits. According to relevant regulations, when the daily average water temperature of the Garonne River exceeds 28 degrees Celsius, the plant must reduce reactor power or temporarily cease operations. Since the nuclear plant needs to draw water from the river for...

2026-08-08

France's drought lowers river water levels, EDF shuts down three nuclear reactors

Affected by drought weather, water flows in France's Meuse and Moselle rivers have declined, and Électricité de France (EDF) has shut down three nuclear reactors in northeastern France. As of the afternoon of August 3, Units 1 and 2 at the Chooz Nuclear Power Plant in the Ardennes department, as well as one unit at the Cattenom Nuclear Power Plant in the Moselle department, remained offline. EDF shut down Unit 1 at the Chooz plant on Saturday evening to comply with the Meuse River management agreement signed between France and Belgium in 1998. Under the same agreement, Unit 2 at the Chooz plant has been offline since July 11. EDF stated that the agreement allows for adjustments to power generation arrangements based on hydrological conditions to safeguard water usage for users along the Meuse River in both France and Belgium.

2026-08-05

Greece to Set Up Cross-Ministerial Group to Study Nuclear Energy Deployment, with Focus on Small Modular Reactors

Greek Prime Minister Kyriakos Mitsotakis announced that Greece will establish a cross-ministerial group to study the scientific basis and legal framework required for the potential deployment of nuclear energy. The Greek government has approved the establishment of the relevant cross-ministerial body, laying the institutional foundation for subsequent assessment work. At a cabinet meeting held on July 30, Mitsotakis stated that an increasing number of countries are considering generating electricity using small modular reactors, and Greece cannot ignore this trend. He said Greece should at least conduct research and obtain complete data before making any decisions. The effort aims to keep Greece abreast of international nuclear technology developments and build a professional...

2026-08-04

EDF's Performance Declines as Nuclear Plants Affected by High Temperatures

EDF faced pressure in its first-half results, with net profit down 4.4% year-on-year to €5.2 billion. Despite an increase of approximately 8 TWh in French nuclear output, revenue still fell 3.3% to €57.45 billion. The company's half-year EBIT stood at €14.1 billion, with total electricity generation of 262.1 TWh, of which French nuclear plants contributed 189.9 TWh. Meanwhile, EDF also bore an additional €500 million in taxes, mainly related to the contribution on excess profits. Weak market prices reduced the value of electricity sold by EDF, while the company, fully state-owned, needs to fund capital-intensive industrial projects. As of end-June, EDF's net debt reached €51.5 billion, flat compared to the level at end-2025...

2026-08-01

France's Golfech nuclear power plant shut down for third time this summer due to high temperatures

France's Golfech nuclear power plant has been shut down three times this summer. Located approximately 100 kilometers northwest of Toulouse, the plant is operated by Électricité de France (EDF). On the evening of July 29, one of its reactors was shut down again due to extreme heat. EDF had previously shut down the reactor twice, from June 23 to July 3 and from July 9 to 27, to prevent cooling water discharged into the Garonne River from exceeding the 28-degree Celsius limit set by a 2006 decree. The Golfech nuclear power plant is located in the Tarn-et-Garonne department, and its cooling water is discharged into the Garonne River. Currently, another reactor at the plant is also shut down for maintenance and refueling. France has experienced its fourth heatwave since the start of summer...

2026-07-31

EDF plans to bring in investors for Nuward small modular reactor project by end of 2026

French utility EDF said on July 30 that it plans to bring in investors for its Nuward small modular reactor project by the end of 2026. The company stated that the related financing arrangements will be centered around European customers and industrial partners to support the development of a batch of initial reactors better aligned with user needs. Small modular reactors have not yet entered large-scale commercial production, but multiple companies worldwide are advancing the deployment of related technologies. Supporters believe that compared with traditional large nuclear power units, small modular reactors offer greater flexibility in deployment methods, application scenarios, and low-carbon energy supply. EDF is a state-owned French power company operating 57...

2026-07-31

Serbia and France Sign Nuclear Energy Cooperation Partnership Agreement

Serbia and France are deepening cooperation in the nuclear energy field, with both sides signing a significant partnership agreement. Serbian Minister of Mining and Energy Dubravka Đedović-Handanović announced via social media that the agreement was signed jointly by the Republic of Serbia, French electricity company EDF, and the French Development Agency AFD, aiming to lay the foundation for Serbia's peaceful nuclear energy projects. This cooperation will focus on strengthening Serbia's expertise, talent pool, and organizational capacity in the nuclear energy sector, while providing a scientific basis for future energy decisions. This partnership follows the Serbian government's reception of an EDF delegation and French Ambassador to Serbia Florence Ferrari...

2026-07-30

Two UK nuclear power plants approved for life extension until March 2030

EDF Energy and Centrica announced on July 22 that the operational lives of the Heysham 1 and Hartlepool nuclear power stations in the UK will be extended by another two years, until March 2030.Located in northern England, the Heysham 1 and Hartlepool nucl

2026-07-23