Power Out Map
– 0% of Hawaii out 0 customers out in Hawaii

Power outage history

Hawaii County Hawaii

8.3hours

without power for the average customer in a typical year, 2018–2025

1.3× the national median

Worst outage on record Hurricane Hone · Aug 25, 2024 28% of customers out · 90% back in 14 hours
Hours without power, average customer per year 8.3h / yr State average 7.1 h · national median 6.6 h
Major outages a year 1.8 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 2hours Median across major outages, from the peak
Longest single outage 9.2days Mar 23, 2021, over 1% of customers out
Outage hours on storm days 42% Share falling on days with a NOAA storm report here
Worst year 2024 14 hours without power, average customer
Electricity customers 87,747 ORNL customer model · 4 well-covered years

Every day since 2015

Eleven years, one night at a time

Each cell is a day. The brighter it is, the larger the share of Hawaii's customers who were without power at that day's worst moment.

20152016201720182019202020212022202320242025
0%100% of customers out

Year by year

Hours in the dark, per customer

2024 was the worst well-recorded year, at 14 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Hawaii, hours without power per customer

HawaiiUS median countyHawaii average
0 5 10 15 20 7.3 ’21 ’22 5.0 ’23 14 ’24 6.5 ’25 HI 7.1 US 6.6

The record

The biggest outages since 2015

Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.

Began Storm Peak out Share Lasted 90% restored Customer-hours
Aug 24, 2024 Hurricane Hone 24,469 28% 2.6 d 14 h 556k
Mar 23, 2021 Thunderstorms 2,338 3% 9.2 d – 213k
Jan 30, 2025 No storm report 22,272 25% 15 h 5.8 h 113k
Dec 5, 2021 Thunderstorms 21,327 24% 14 h 2.0 h 82k
Dec 6, 2021 Winter storm 5,899 7% 14 h 26 h 39k
Nov 12, 2025 No storm report 5,177 6% 23 h 5.2 h 39k
Apr 12, 2021 Thunderstorms 2,664 3% 28 h – 30k
Jan 30, 2024 No storm report 17,171 20% 3.2 h 1.8 h 30k
Jan 31, 2025 No storm report 4,684 5% 8.5 h 1.2 h 28k
May 3, 2023 No storm report 3,457 4% 7.8 h – 27k
Apr 27, 2023 No storm report 956 1% 27 h – 26k
Sep 20, 2024 No storm report 5,558 6% 9.5 h 6.5 h 23k

After the peak

How fast the lights come back

Each line is one major outage, from its peak. The amber line is the typical path.

0% 25% 50% 75% 100% peak+24h+48h+72h+96h half back by +2h 90% by +4h

When it happens

The outage clock

Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.

00061218 Jan inside

What was happening

Weather behind the outages

Each outage is matched to NOAA storm reports for Hawaii from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

  • No storm on record 58%
  • Tropical storm 24%
  • Thunderstorms 14%
  • Flooding 2.1%
  • Winter storm 1.6%
  • Wildfire 1.0%

Who keeps the lights on

Utilities serving Hawaii

As each utility reports to the Energy Information Administration for its whole Hawaii territory, not this county alone. Outage minutes include major storm days.

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Hawaii Electric Light Co Inc Investor Owned 379 273 2.90 45.8 79k

EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.

Across Hawaii

Where it is darkest

Hours / yr64+

All Hawaii counties →

About these numbers

Notes

Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 87,747 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →