Switzerland : Emergency shutdown of Beznau Reactor 2 after human error

Reactor 2 of the Beznau nuclear power plant, the oldest in Europe, was shut down in an emergency following an incorrect operation during a routine inspection. The Axpo group assures that safety was maintained and that a restart is under review.

Share:

Comprehensive energy news coverage, updated nonstop

Annual subscription

8.25€/month*

*billed annually at 99€/year for the first year then 149,00€/year ​

Unlimited access • Archives included • Professional invoice

OTHER ACCESS OPTIONS

Monthly subscription

Unlimited access • Archives included

5.2€/month*
then 14.90€ per month thereafter

FREE ACCOUNT

3 articles offered per month

FREE

*Prices are excluding VAT, which may vary depending on your location or professional status

Since 2021: 35,000 articles • 150+ analyses per week

Reactor 2 of the Beznau nuclear power plant, located in Switzerland, was shut down in an emergency on Monday at 1:05 p.m. (12:05 p.m. GMT) following an operational error during a routine inspection. The Axpo group, which operates the plant, stated in a press release that the security procedure was immediately triggered and that the incident posed no danger to the population or the environment.

One of Europe’s oldest power plants

Commissioned in 1971, Beznau Reactor 2 is one of the oldest still in operation worldwide. Reactor 1, which began service in 1969, completes the site, making it the oldest nuclear power plant in Europe still in operation. Switzerland has four active nuclear reactors, all of which have been in service for several decades.

A monitored restart

Axpo stated that the reactor will only restart after approval from the Swiss Federal Nuclear Safety Inspectorate (IFSN). During this phase, water vapor may be visible around the plant, a phenomenon considered normal by the operator. The facility undergoes regular inspections to ensure its proper functioning, and Axpo announced in 2023 its intention to extend its operation until 2033.

An uncertain future for nuclear power in Switzerland

In 2017, a referendum confirmed the gradual phase-out of nuclear energy, which accounts for 29% of national electricity production, by banning the construction of new plants. However, the Swiss government stated last December that it intends to amend the law to allow the construction of new reactors. This shift comes amid an uncertain energy landscape, marked by debates over supply security and the transition to alternative sources.

TRISO-X has started above-ground works on the first U.S. facility dedicated to manufacturing fuel for small modular reactors, marking a key industrial milestone in the deployment of the Xe-100.
Niigata’s governor is expected to approve the restart of one reactor at the Kashiwazaki-Kariwa plant, inactive since the Fukushima accident, reviving a strategic asset for Japan’s energy sector.
Canadian firm Aecon and private developer Norsk Kjernekraft have signed a strategic agreement targeting the deployment of BWRX-300 small modular reactors across several potential locations in Norway.
The South African government has officially lifted the PBMR reactor out of inactivity, launching a public investment programme and transferring the strategic nuclear asset from Eskom to Necsa.
The French Court of Auditors values EDF’s grand carénage at over €100bn, while EPR2 reactors already exceed €67–75bn. The State simultaneously directs regulation, financing, and industrial strategy, raising the risk of conflict of interest.
Belarus commits major public investment to add a third reactor at the Ostrovets plant and initiates studies for a second nuclear site to support national energy demand.
Framatome’s accident-tolerant fuel prototype has completed a second 24-month cycle in a commercial nuclear reactor in the United States, paving the way for a third phase of industrial testing.
The Wylfa site in Wales will host three Rolls-Royce small modular reactors from 2026, marking a strategic investment in the UK’s nuclear expansion.
EDF confirmed that the Flamanville EPR has reached a major milestone, while planning a nearly year-long shutdown in 2026 for extensive regulatory inspections and key component replacement.
EDF is opening access to its long-term nuclear supply contracts to companies consuming more than 7 GWh per year, an adjustment driven by the gradual end of the Arenh mechanism.
South Korean authorities have approved the continued operation of the Kori 2 reactor for an additional eight years, marking a key milestone in the national nuclear strategy.
A public-private consortium is developing a 5 MW thermal microreactor designed to operate without refuelling for ten years, marking a strategic step in Brazil's nuclear innovation efforts.
EDF has announced that the Flamanville EPR reactor is now operating at 80% of its capacity. The target of reaching full output by the end of autumn remains confirmed by the utility.
The accelerated approval of the Aurora facility’s nuclear safety plan marks a strategic milestone in rebuilding a domestic nuclear fuel production line in the United States.
The Industrikraft consortium will invest SEK400mn ($42.2mn) to become a shareholder in Videberg Kraft, marking a new phase in Sweden’s nuclear project led by Vattenfall on the Värö Peninsula.
MVM Group has signed an agreement with Westinghouse to secure VVER-440 fuel supplies from 2028, reducing its reliance on Russia and strengthening nuclear cooperation between Budapest and Washington.
The delivery of nuclear fuel by Russian subsidiary TVEL to the Da Lat research reactor marks a key step in strengthening the nuclear commercial partnership between Moscow and Hanoi.
US supplier X-energy has formalised a graphite supply contract with Japan's Toyo Tanso for the construction of its first four small modular reactors, in partnership with Dow and backed by the US Department of Energy.
US-based Enveniam has signed an agreement with LIS Technologies Inc. to oversee the design and construction of a new laser-based uranium enrichment facility on American soil.
Faced with shorter approval timelines, several European nuclear firms, including Newcleo, Orano and Urenco, are considering relocating key industrial investments to the United States.

All the latest energy news, all the time

Annual subscription

8.25€/month*

*billed annually at 99€/year for the first year then 149,00€/year ​

Unlimited access - Archives included - Pro invoice

Monthly subscription

Unlimited access • Archives included

5.2€/month*
then 14.90€ per month thereafter

*Prices shown are exclusive of VAT, which may vary according to your location or professional status.

Since 2021: 30,000 articles - +150 analyses/week.