Kauai County Power Outage History
2019–2025 · Hawaii
Average — typical outage frequency and duration nationally. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jul 11, 2024 | 12 hrs | 27,853 (80%) | Unnamed event |
| Apr 30, 2021 | 5 hrs | 27,831 (79%) | Unnamed event |
| Jul 11, 2024 | 0 hrs | 25,364 (72%) | Unnamed event |
| Dec 24, 2019 | 3 hrs | 19,589 (56%) | Heavy Rain |
| Dec 25, 2019 | 13 hrs | 19,077 (54%) | Heavy Rain |
Over the 7 years from 2019 to 2025, Kauai County recorded 596 distinct power outage events, averaging 2.5 hours per event.
The single worst outage on record in Kauai County started July 11, 2024, lasting 12 hours and leaving up to 27,853 customers without power (80% of the county) at its peak.
December has historically been the worst month for outages in Kauai County, with 68 events recorded during that month across the dataset.
Based on this history, Kauai County earns a Reliability Grade of C, placing it in the 59th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Kauai County's outage profile
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Similar counties in Hawaii
Counties with the closest reliability grade and national percentile to Kauai County.
| County | Grade | National percentile |
|---|---|---|
| Maui County | C | 57th |
| Honolulu County | B | 64th |
| Hawaii County | A | 82nd |
FAQ
How often does power go out in Kauai County?
Between 2019 and 2025, Kauai County recorded 596 outage events, averaging 2.5 hours each.
What is Kauai County's reliability grade?
Kauai County has a Reliability Grade of C, in the 59th national percentile.
What was the worst power outage in Kauai County?
The worst outage on record started July 11, 2024, lasting 12 hours and affecting up to 27,853 customers.