County annual report · FIPS 15007
2021 Kauai County, HI Power Outage Report
In 2021, customers in Kauai County, HI went without power for an average of 5.7 hours, a total of 199K customer-hours (Hawaii average 6.0 hours). That ranks 3rd worst of 4 Hawaii counties and 1198th 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 Kauai 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 | April 26, 2021 08:45 | May 11, 2021 21:15 | 15d 12h | 27,831 | 21K |
| 2 | November 24, 2021 00:30 | December 16, 2021 13:15 | 22d 12h | 3,662 | 20K |
| 3 | January 25, 2021 13:15 | March 4, 2021 05:45 | 37d 16h | 3,112 | 39K |
| 4 | July 21, 2021 03:45 | August 25, 2021 13:00 | 35d 9h | 2,872 | 13K |
| 5 | May 12, 2021 02:45 | July 14, 2021 14:15 | 63d 11h | 2,377 | 20K |
| 6 | October 21, 2021 05:00 | November 18, 2021 07:45 | 28d 2h | 1,958 | 8,439 |
| 7 | March 4, 2021 17:30 | April 19, 2021 13:15 | 45d 19h | 1,428 | 25K |
| 8 | April 19, 2021 15:30 | April 26, 2021 00:45 | 6d 9h | 1,411 | 3,990 |
| 9 | August 25, 2021 16:00 | October 21, 2021 02:15 | 56d 10h | 1,212 | 24K |
| 10 | July 14, 2021 19:00 | July 21, 2021 02:45 | 6d 7h | 1,211 | 3,779 |
Outage episodes by size in 2021: 13 reached 100+ customers, 11 reached 1,000+ customers, 1 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 Kauai 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 |
|---|---|---|---|---|---|
| Kauai Island Utility Cooperative | - | - | - | - | - |
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 ÷ 34,835 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. Kauai County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Kauai 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/). https://massoutage.com/reports/2021/hawaii/kauai-county