The operating licenses of Chinshan NPP Unit 1 and 2 expired in December 2018 and July 2019 respectively. For Chinshan NPP’s performance indicator information after the third quarter of 2019, please refer to  Oversight of NPP Decommissioning.
The operating licenses of Kuosheng NPP Unit 1 and 2 expired in December 2021 and March 2023 respectively. For Kuosheng NPP’s performance indicator information after the first quarter of 2023, please refer to  Oversight of NPP Decommissioning.
The operating licenses of Maanshan NPP Unit 1 and 2 expired in July 2024 and May 2025 respectively. For Maanshan NPP’s performance indicator information after the Second quarter of 2025, please refer to  Oversight of NPP Decommissioning.

Performance Indicator/NPP Kuosheng Maanshan 1 2 1 2 Initiating Events Q1/2025 - - Q4/2024 - - Q3/2024 - - Q2/2024 - - Mitigating Systems Q1/2025 - - Q4/2024 - - Q3/2024 - - Q2/2024 - - Barrier Integrity Q1/2025 - - Q4/2024 - - Q3/2024 - - Q2/2024 - - Emergency Preparedness Q2/2025 - Q1/2025 - Q4/2024 - Q3/2024 -

：indicates performance within an expected performance level where the associated cornerstone objectives are met.
：represents performance outside an expected range of nominal utility performance but related cornerstone objectives are still being met.
：indicates related cornerstone objectives are being met, but with a minimal reduction in the safety margin.
：signals a significant reduction in safety margin in the area measured by the performance indicator.