Honolulu County, Hawaii Power Outages, 2017 to 2023

Honolulu County, Hawaii had 11 major outages from 2017 to 2023

Lower outage time among US counties

Residents here averaged 0.36 times the US outage time per person and 0.55 times the Hawaii rate. It ranks 3 of 3 in the state, where 1 has the most. Data confidence: High, with 7 years of records.

1.6major outages per year

5 of 7years with a major outage

28 hrslongest major outage

Feb, Dechardest months

February and December made up 27% of this county's outage time. The largest outage on record began May 21, 2017, reached 62,188 customers, and left at least 200 customers out for 4.8 hours.

Outage time per resident, rated Hawaii counties

MostLeast

Outage impact by year

Customer-hours without power. 1,000 customers out for 2 hours is 2,000 customer-hours.

0.5M

1.5M

2017'172018'182019'192020'202021'212022'222023'23

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2017	807,818	251	0
2018	769,284	310	0
2019	1,058,646	318	2
2020	649,406	300	1
2021	1,091,005	302	4
2022	655,041	243	2
2023	1,172,010	321	2

When outages hit

Share of this county's customer-hours by month.

10%

15%

20%

JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD

Largest outages on record

Start date	Hours	Peak customers	Customer-hours
May 21, 2017	4.8	62,188	295,377
Feb 10, 2019	22.8	32,353	240,911
Mar 8, 2023	28.0	35,085	208,399
Dec 25, 2019	21.8	25,846	191,497
Apr 19, 2023	14.8	25,527	187,505

Hours measure how long at least 200 customers in the county were out. Most customers get power back sooner.

Size your backup battery

Start with what you would keep running. Wattages are typical averages, so check your own appliances.

Phones, Wi-Fi, lights, about 60 WRefrigerator, about 60 WChest freezer, about 40 WGas furnace fan, about 160 W

Hours to cover: 24

1,700 Whof battery capacity, allowing for about 15% conversion loss

If anyone relies on medical equipment, plan that with their provider. Run portable fuel generators outdoors only, at least 20 feet from doors, windows and vents. See the outage checklist.

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How to read this

A major outage lasted at least 8 hours and reached customers equal to at least 1% of county residents.
Records cover outages of at least 200 customers in a county. They do not show what happened on your street.
Utilities that do not report can make a county look better than it is. Data ends in 2023. Read the full method.