County annual report · FIPS 15009
2021 Maui County, HI Power Outage Report
In 2021, customers in Maui County, HI went without power for an average of 12.8 hours, a total of 943K customer-hours (Hawaii average 6.0 hours). That ranks 1st worst of 4 Hawaii counties and 648th of 2,974 nationally.
Compared with HI, the US and 2020
Coverage line is EAGLE-I's share of Hawaii customers tracked each year.
Biggest outages in Maui County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 6, 2021 06:45 | December 7, 2021 06:30 | 23h 45m | 6,897 | 89K |
| 2 | November 29, 2021 23:45 | November 30, 2021 08:15 | 8h 30m | 5,585 | 21K |
| 3 | November 2, 2021 06:30 | November 2, 2021 08:30 | 2h | 5,000 | 7,500 |
| 4 | December 7, 2021 08:00 | December 8, 2021 06:00 | 22h | 4,691 | 59K |
| 5 | December 8, 2021 08:45 | December 8, 2021 15:45 | 7h | 4,691 | 33K |
| 6 | April 28, 2021 13:30 | April 28, 2021 15:45 | 2h 15m | 3,448 | 7,758 |
| 7 | May 26, 2021 18:45 | May 26, 2021 19:30 | 45m | 3,448 | 2,586 |
| 8 | May 26, 2021 22:45 | May 26, 2021 23:15 | 30m | 3,448 | 1,724 |
| 9 | April 23, 2021 22:00 | April 24, 2021 09:00 | 11h | 3,000 | 33K |
| 10 | December 6, 2021 02:45 | December 6, 2021 03:00 | 15m | 2,702 | 676 |
Outage episodes by size in 2021: 39 reached 100+ customers, 21 reached 1,000+ customers, 0 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Maui County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Maui Electric Co Ltd | 2020 | 3.9 hrs | 1.90 | 2.8 hrs | 1.73 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 100% of Hawaii's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 73,551 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Maui County has data for 2020–2025.
Cite this report
MassOutage (massoutage.com), Maui County, HI annual power outage report, 2021, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2021/hawaii/maui-county