Hawaii County, Hawaii Power Outages, 2021 to 2023

This county is not rated. Its numbers may not reflect what residents experienced.

Hawaii County, Hawaii had 8 major outages from 2021 to 2023

Not rated

We show this record but do not rank it because the history is short, the population is very small, or customer counts look too high for the population. Treat these numbers with caution. Data confidence: Low, with 3 years of records.

2.7major outages per year

2 of 3years with a major outage

220 hrslongest major outage

Mar, Dechardest months

March and December made up 45% of this county's outage time. The largest outage on record began Mar 23, 2021, reached 2,338 customers, and left at least 200 customers out for 219.8 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.

200K

400K

600K

800K

2021'212022'222023'23

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2021	650,734	55	6
2022	87,364	31	0
2023	361,763	90	2

When outages hit

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

10%

20%

30%

40%

JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD

Largest outages on record

Start date	Hours	Peak customers	Customer-hours
Mar 23, 2021	219.8	2,338	211,556
Dec 5, 2021	13.5	21,327	82,340
Jul 3, 2021	92.2	14,109	47,085
Sep 9, 2023	160.5	1,795	45,814
Apr 12, 2021	28.5	2,664	29,899

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.