popular articles

EDF postpones Flamanville EPR restart again to April

EDF has delayed the restart of the Flamanville EPR to 11 April, citing a new maintenance operation, while keeping its 2025 production forecast unchanged.

Please share:

The Flamanville EPR nuclear reactor, operated by Électricité de France (EDF), will not resume operations before 11 April, more than a month after the initially scheduled date. This postponement, confirmed by a message published on 31 March on the energy company’s website, follows a series of technical interventions on equipment located within the nuclear section of the facility.

According to information provided to Agence France-Presse by EDF, the shutdown since 15 February is due to the need to verify the quality of the primary circuit water, alongside a newly scheduled maintenance operation following the last announced restart date of 8 April. These works are not related to previously observed issues with the turbo-generator, which underwent early adjustments as a precaution.

Technical challenges with the turbo-generator

The business daily La Tribune reported that persistent malfunctions of the turbo-generator could hinder the reactor’s full power output. According to the publication, the required repair involves installing scaffolding within a hard-to-access section of the reactor. EDF, however, maintains that full operational capacity should be reached by summer as outlined in the initial timeline.

The turbine, a central component in nuclear power generation, converts thermal energy from steam generators into mechanical energy to drive the alternator. EDF stated that the impact of recent adjustments will only be measurable once the reactor is reconnected to the grid.

Gradual commissioning maintained despite interruptions

Since its initial connection to the grid on 21 December 2024, the Flamanville 3 reactor — the twelfth European Pressurised Reactor (EPR) to enter global operation — has already experienced two scheduled shutdowns. These are part of a progressive ramp-up strategy communicated at the time of its commissioning. EDF had announced that up to ten maintenance shutdowns could occur during the start-up phase, alongside the verification of over 1,500 safety criteria.

In a statement dated 4 April, EDF reiterated its annual production forecast for the entire French nuclear fleet, maintaining the target range of 350 to 370 terawatt hours (TWh) for 2025. This projection includes expected output from Flamanville 3, despite the technical setbacks encountered since its launch.

Register free of charge for uninterrupted access.

Publicite

Recently published in

Tennessee Valley Authority becomes the first US public utility to apply for a permit to build a BWRX-300 small modular reactor, with site works anticipated as early as 2026 at Clinch River.
India’s nuclear regulator has approved the siting of the Mahi Banswara project, which includes four 700 MWe PHWR reactors, reinforcing the country’s strategy of fleet-based deployment.
India’s nuclear regulator has approved the siting of the Mahi Banswara project, which includes four 700 MWe PHWR reactors, reinforcing the country’s strategy of fleet-based deployment.
Emmanuel Macron is visiting Vietnam as the country expands its nuclear partnerships, signing today an agreement with the American company Westinghouse, following recent cooperation with Russia, intensifying competition in this strategic market.
Emmanuel Macron is visiting Vietnam as the country expands its nuclear partnerships, signing today an agreement with the American company Westinghouse, following recent cooperation with Russia, intensifying competition in this strategic market.
Westinghouse has signed seven new agreements with Bulgarian suppliers to support the construction of two AP1000 reactors at the Kozloduy nuclear power plant, further expanding its local industrial footprint.
Westinghouse has signed seven new agreements with Bulgarian suppliers to support the construction of two AP1000 reactors at the Kozloduy nuclear power plant, further expanding its local industrial footprint.
The Maanshan 2 reactor has been permanently disconnected from the grid, marking the end of nuclear operations in Taiwan in line with the national phase-out legislation.
Several parties are positioning to acquire French company Orano’s mining sites in Niger, while the firm pursues international arbitration to protect its assets and nearly €250mn in blocked uranium concentrate.
Several parties are positioning to acquire French company Orano’s mining sites in Niger, while the firm pursues international arbitration to protect its assets and nearly €250mn in blocked uranium concentrate.
Energy group Enel partners with Ansaldo and Leonardo to form Nuclitalia, a joint venture focused on developing small modular reactor technologies as Italy considers a return to civilian nuclear power.
Energy group Enel partners with Ansaldo and Leonardo to form Nuclitalia, a joint venture focused on developing small modular reactor technologies as Italy considers a return to civilian nuclear power.
US-based Space Nuclear Power Corporation has been selected to design a fission reactor for nuclear electric propulsion in future military and civilian spacecraft.
US-based Space Nuclear Power Corporation has been selected to design a fission reactor for nuclear electric propulsion in future military and civilian spacecraft.
The small modular reactor (SMR) pipeline increased by 42% in Q1 2025, reaching 47 GW, driven by the growing demand from data centres, according to a report from Wood Mackenzie.
EDF and Siparex are mobilising a new €300 million investment fund to strengthen strategic companies in the nuclear supply chain amid industrial revival driven by the EPR2 reactor programme.
EDF and Siparex are mobilising a new €300 million investment fund to strengthen strategic companies in the nuclear supply chain amid industrial revival driven by the EPR2 reactor programme.
Aecon Kiewit Nuclear Partners will lead construction of North America’s first grid-scale small modular reactor, with commercial operation expected in 2030.
Aecon Kiewit Nuclear Partners will lead construction of North America’s first grid-scale small modular reactor, with commercial operation expected in 2030.
Russia and Vietnam have signed a nuclear roadmap aimed at strengthening technological cooperation, including a commercial nuclear plant and a scientific centre by 2030.
Russia and Vietnam have signed a nuclear roadmap aimed at strengthening technological cooperation, including a commercial nuclear plant and a scientific centre by 2030.
The French National Agency for Radioactive Waste Management has revised upward its evaluation of the Cigéo underground storage project, with a maximum potential cost of €37.5bn ($40.4bn) over 150 years.
The European Commission has requested Prague to suspend the award of a CZK200bn contract to KHNP, citing suspicions of state aid that may breach European law.
The European Commission has requested Prague to suspend the award of a CZK200bn contract to KHNP, citing suspicions of state aid that may breach European law.
Czech justice has suspended the signing of a major contract between Prague and South Korea’s KHNP, following a complaint by French group EDF challenging the fairness of the Dukovany nuclear project tender.
Czech justice has suspended the signing of a major contract between Prague and South Korea’s KHNP, following a complaint by French group EDF challenging the fairness of the Dukovany nuclear project tender.
Thanks to recent strategic agreements, Utah is establishing itself as a key regional hub for the development and production of Small Modular Reactors, boosting a rapidly growing industry at the heart of the United States.
Thanks to recent strategic agreements, Utah is establishing itself as a key regional hub for the development and production of Small Modular Reactors, boosting a rapidly growing industry at the heart of the United States.
The United States is multiplying energy agreements with Romania and Bulgaria, focusing on civil nuclear power and hydropower storage to deepen its influence in strategic regional projects.
U.S.-based Energy Fuels extracted 151,400 pounds of uranium in April, reaching an unprecedented level since the opening of its Pinyon Plain mine, while underground drilling reveals exceptionally high grades.
U.S.-based Energy Fuels extracted 151,400 pounds of uranium in April, reaching an unprecedented level since the opening of its Pinyon Plain mine, while underground drilling reveals exceptionally high grades.
The Nuclear Safety and Radiation Protection Authority (ASNR) will now publish its decisions and expert reports simultaneously, amid a controversial merger of nuclear oversight bodies.
The Nuclear Safety and Radiation Protection Authority (ASNR) will now publish its decisions and expert reports simultaneously, amid a controversial merger of nuclear oversight bodies.
The French Parliament has approved Bernard Fontana's appointment as CEO of EDF, paving the way for a new industrial phase in the nuclear sector under close scrutiny from public and industrial stakeholders.
The French Parliament has approved Bernard Fontana's appointment as CEO of EDF, paving the way for a new industrial phase in the nuclear sector under close scrutiny from public and industrial stakeholders.
Two French MPs have raised concerns over the massive cost overruns of the Hinkley Point nuclear project, describing it as a “financial sinkhole” for EDF, now fully owned by the State.
The Chinese State Council has just authorized the construction of ten new nuclear reactors across five strategic sites, highlighting a massive acceleration in energy ambitions to achieve record installed capacity by 2025.
The Chinese State Council has just authorized the construction of ten new nuclear reactors across five strategic sites, highlighting a massive acceleration in energy ambitions to achieve record installed capacity by 2025.
Axpo reconnected unit 1 of the Beznau nuclear power plant to the grid after two weeks of refuelling, marking the start of a new operating cycle for the Swiss facility.
Axpo reconnected unit 1 of the Beznau nuclear power plant to the grid after two weeks of refuelling, marking the start of a new operating cycle for the Swiss facility.
The Czech competition regulator has dismissed EDF’s appeal, confirming the selection of Korea Hydro & Nuclear Power for the construction of new nuclear capacity at Dukovany.
The Czech competition regulator has dismissed EDF’s appeal, confirming the selection of Korea Hydro & Nuclear Power for the construction of new nuclear capacity at Dukovany.

Advertising