Science & Tech · Science & Environment · 4 hrs ago
Gösgen nuclear plant shuts down automatically after voltage problem
Gösgen nuclear plant shut down automatically at 6:40 a.m.
on Tuesday after a voltage problem.
The plant is in the canton of Solothurn in Switzerland.
Low voltage on the control-rod rails triggered the shutdown, and the plant said its safety systems responded as designed.
The plant is in a safe condition, with no additional radioactive release reported.
Switzerland’s Federal Nuclear Safety Inspectorate, known as Ensi, was informed.
The plant’s restart timing is not yet clear; one account says it will restart after Ensi approval, while another says the timing has not been confirmed.
Gösgen nuclear power plant in Switzerland shut down automatically on Tuesday after an undervoltage affected its control rod busbars.
The shutdown was triggered at 6:40 a.m., according to the plant and news reports.
The plant said safety-relevant systems responded as intended and that the facility is in a safe condition.
The plant reported no additional release of radioactivity.
The Swiss Federal Nuclear Safety Inspectorate was informed; reports differed on whether the restart timing was still unknown or would follow the inspectorate’s approval.
- Who
- Gösgen nuclear power plant.
- What
- An automatic reactor shutdown was triggered after an undervoltage on the control rod busbars.
- When
- Tuesday at 6:40 a.m.; the date reported was October 20, 2026.
- Where
- Gösgen nuclear power plant in the canton of Solothurn, Switzerland.
- Why
- An undervoltage affected the control rod busbars.
This story does not have two clearly opposing sides.
An automatic reactor shutdown was triggered at Gösgen after an undervoltage on the control rod busbars.
The plant said safety systems had responded as intended and that no additional radioactivity had been released.
The Federal Nuclear Safety Inspectorate was informed; 20 Min reported that the plant would restart after its approval.
- Shutdown time
- 6:40 a.m. on Tuesday
- Cause
- Undervoltage on the control rod busbars
- Location
- Gösgen, canton of Solothurn
- Safety status
- Plant reported to be in a safe condition
- Radioactivity
- No additional release reported
- Regulator
- Swiss Federal Nuclear Safety Inspectorate informed
3 sources
What people are saying
With the automatic shutdown, all safety-relevant systems responded as intended.
The plant is shut down and is in a safe condition.