County annual report · FIPS 15003
2018 Honolulu County, HI Power Outage Report
In 2018, customers in Honolulu County, HI went without power for an average of 2.9 hours, a total of 908K customer-hours (Hawaii average 2.9 hours). That ranks 1st worst of 1 Hawaii counties and 1528th of 2,798 nationally.
Compared with HI, the US and 2017
Coverage line is EAGLE-I's share of Hawaii customers tracked each year.
Biggest outages in Honolulu County, 2018
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 2, 2018 17:45 | April 3, 2018 10:30 | 16h 45m | 18,036 | 92K |
| 2 | April 3, 2018 16:00 | April 9, 2018 15:30 | 5d 23h | 7,703 | 11K |
| 3 | February 8, 2018 19:45 | February 9, 2018 06:00 | 10h 15m | 7,602 | 3,564 |
| 4 | August 23, 2018 14:00 | August 25, 2018 13:00 | 1d 23h | 7,590 | 49K |
| 5 | October 30, 2018 12:15 | November 3, 2018 22:00 | 4d 9h | 7,534 | 25K |
| 6 | February 23, 2018 17:45 | February 24, 2018 09:45 | 16h | 7,378 | 1,976 |
| 7 | September 12, 2018 16:00 | September 14, 2018 17:45 | 2d 1h | 6,999 | 38K |
| 8 | August 25, 2018 15:00 | September 12, 2018 08:30 | 17d 17h | 6,904 | 46K |
| 9 | October 9, 2018 14:30 | October 14, 2018 06:00 | 4d 15h | 6,865 | 53K |
| 10 | March 29, 2018 08:15 | April 2, 2018 10:15 | 4d 2h | 6,692 | 6,539 |
Outage episodes by size in 2018: 184 reached 100+ customers, 97 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 Honolulu County reported on EIA Form 861 for 2018, 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 |
|---|---|---|---|---|---|
| Hawaiian Electric Co Inc | 2018 | 2.1 hrs | 1.33 | 1.9 hrs | 1.25 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 61% of Hawaii's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 308,098 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. Honolulu County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Honolulu County, HI annual power outage report, 2018, 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/2018/hawaii/honolulu-county