Unit: times/household‧year

Note: The red bars indicate that major outage events occurred in those years. The annual SAIDI (System Average Interruption Duration Index) and SAIFI (System Average Interruption Frequency Index) values should include the additional values from these major incidents.

1. On August 15, 2017, a major outage occurred due to a gas supply interruption by CPC Corporation, Taiwan. The SAIFI resulting from this event was 0.553 (times/household.year).
2. On May 13 and 17, 2021, major outages occurred. The combined SAIFI resulting from these events was 0.864 (times/household.year).
3. On March 3, 2022, a major outage occurred. The SAIFI resulting from this event was 0.467 (times/household.year).