Maui CountyPower Outage History
What this grade means
Average — typical outage frequency and duration nationally. This county sits in the middle of the national distribution — its outage frequency and duration over the past 12 years are close to the nationwide median, neither notably better nor worse than most other US counties. A typical amount of backup-power preparedness is reasonable here.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Oct 13, 2020 | <1 hr | 66,478 (45%) | Drought |
| Aug 23, 2022 | 8 hrs | 31,807 (22%) | Drought |
| Jan 10, 2025 | 17 hrs | 22,726 (15%) | Thunderstorm Wind |
| Oct 8, 2020 | 1 hrs | 15,662 (11%) | Drought |
| Aug 8, 2023 | 33 hrs | 14,114 (10%) | Hurricane Dora |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Maui County, Hawaii that day.
Over the 6 years from 2020 to 2025, Maui County recorded 361 distinct power outage events, averaging 9.5 hours per event.
The single worst outage on record in Maui County started October 13, 2020 (Drought), lasting less than 1 hour and leaving up to 66,478 customers without power (45% of the county) at its peak.
August has historically been the worst month for outages in Maui County, with 47 events recorded during that month across the dataset.
Based on this history, Maui County earns a Reliability Grade of C, placing it in the 57th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Hawaii
Counties with the closest reliability grade and national percentile to Maui County.
| County | Grade | National percentile |
|---|---|---|
| Kauai County | C | 59th |
| Honolulu County | B | 64th |
| Hawaii County | A | 82nd |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
FAQ
How often does power go out in Maui County?
Between 2020 and 2025, Maui County recorded 361 outage events, averaging 9.5 hours each.
What is Maui County's reliability grade?
Maui County has a Reliability Grade of C, in the 57th national percentile.
What was the worst power outage in Maui County?
The worst outage on record started October 13, 2020 (Drought), lasting less than 1 hour and affecting up to 66,478 customers.