In 2025, the Swiss nuclear installations complied with the approved operating conditions. The safety status of the Beznau and Leibstadt nuclear power plants (NPPs) was good. ENSI is not issuing an overall assessment for Gösgen NPP while the findings concerning its feedwater system are still being evaluated and the plant remains in an extended shutdown. There were 43 reportable events in the Swiss nuclear installations. ENSI classified the deviation during the loading of a transport and storage container at Leibstadt NPP as Level 1 on the International Nuclear and Radiological Event Scale (INES), and all other events as Level 0. There were no impermissible releases of radioactive substances into the environment. This is the conclusion reached by ENSI in its 2025 Oversight Report.