Power outages in Hawaii
In 2025, the average Hawaii customer had 4.7 hours (282.1 minutes) without power over the year. That is above the US median of 4.3 hours (258.7 minutes) across 50 states compared.
Trend
Outage time rose from 2.0 hours in 2020 to a peak of 8.2 hours in 2023, then fell to 5.3 hours in 2024 and 4.7 hours in 2025. The 2025 figure is still higher than in 2020, 2021 and 2022.
Utilities in 2025
Hawaiian Electric Co Inc had the lowest SAIDI in 2025 at 201.5 minutes (3.4 hours). Maui Electric Co Ltd had the highest at 480.7 minutes (8.0 hours).
| Utility | Customers | Hours / yr | Interruptions |
|---|---|---|---|
| Maui Electric Co Ltd | 71,786 | 8.0 | 2.9 |
| Hawaii Electric Light Co Inc | 90,876 | 6.3 | 2.9 |
| Kauai Island Utility Cooperative | 35,470 | 5.6 | 3.5 |
| Hawaiian Electric Co Inc | 309,996 | 3.4 | 1.4 |
What this means for backup power
For everyday outages, enter 2.3 hours in the calculator, which is the average length of one interruption. To ride out a year like 2023, size for 8.2 hours, the total outage time for that year.
FAQ
How long do power outages last in Hawaii?
One interruption lasts 2.3 hours on average. Customers had about 2.0 interruptions per year, which added up to 4.7 hours in 2025.
What does SAIDI mean?
SAIDI is the total time an average customer is without power in a year. It is not the length of a single outage. In Hawaii, 2025 SAIDI was 282.1 minutes, or 4.7 hours.
How much backup power should I plan for?
Use 2.3 hours in the calculator for a typical outage. If you want cover for a bad year like 2023, plan for 8.2 hours of total outage time.
Utility pages
Source: U.S. EIA Form 861 Reliability file. Data snapshot 2026-11-05.