Outage Extended At Swiss Nuclear Plant

(MENAFN- Swissinfo) The Gösgen nuclear power plant in northwestern Switzerland will be out of service for six months. It has not been connected to the grid since late May. This content was published on August 22, 2025 - 09:25 2 minutes Keystone-SDA

• Deutsch de KKW Gösgen-Ausfall verdüstert Gewinnaussichten von Axpo und Alpiq Original Read more: KKW Gösgen-Ausfall verdüstert Gewinnaussichten von Axpo und Alpi

+ Get the most important news from Switzerland in your inbox

The main shareholder Alpiq expects a loss of between CHF140-160 million ($173-198 million) in its operating business result in 2025. The second-biggest shareholder Axpo expects a reduction in income of CHF150-170 million, spread over the two financial years 2024/2025 and 2025/2026, the two companies announced on Friday.

The restart of the nuclear power plant is expected to be delayed by a further six months until the end of February 2026.

More More Swiss nuclear plant is off the grid for an indefinite period

This content was published on Jul 15, 2025 The operator must provide evidence of fallback in case of a possible overload in the feedwater pipework system.

Read more: Swiss nuclear plant is off the grid for an indefinite perio

The Gösgen nuclear plant south of Basel has not been connected to the grid since May 24. At that time, the operator was commissioned to provide evidence of possible overloading in the feedwater pipework system.

An inspection and approval by the Swiss Federal Nuclear Safety Inspectorate (Ensi) is required before production can be resumed.

More More Swiss Politics Swiss government leaves door open to construction of new nuclear power plants

This content was published on Aug 13, 2025 The construction of new nuclear power plants in Switzerland should be authorised again, according to the government.

Read more: Swiss government leaves door open to construction of new nuclear power plant

The plant generates around 8 billion kilowatt hours (kWh) of electricity per year, covering around 13% of Switzerland's electricity consumption. Gösgen began operations in 1979.

The main shareholder is Alpiq (40 per cent), followed by Axpo Power (25 per cent), the Axpo subsidiary CKW (12.5 per cent), the city of Zurich and Energie Wasser Bern (EWB).

More More Emissions reduction Risks remain as Switzerland weighs return to nuclear power

This content was published on Jul 17, 2025 Switzerland reconsiders nuclear power amid climate goals, but experts warn of hidden risks that show the complexities of clean energy today.

Read more: Risks remain as Switzerland weighs return to nuclear powe

Translated from German by DeepL/sb

MENAFN22082025000210011054ID1109964375