Power outage history
Marquette County Michigan
4.7hours
without power for the average customer in a typical year, 2018–2025
78th most of 83 in Michigan 29% below the national median
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 Marquette's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2025 was the worst well-recorded year, at 13 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Marquette, hours without power per customer
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 |
|---|---|---|---|---|---|---|
| Dec 28, 2025 | Winter storm | 12,919 | 29% | 2.8 d | 47 h | 371k |
| May 1, 2023 | Winter storm | 7,903 | 17% | 2.5 d | 2.1 d | 203k |
| Apr 10, 2017 | Thunderstorms | 8,024 | 18% | 46 h | 36 h | 175k |
| May 9, 2022 | Windstorm | 6,533 | 14% | 31 h | 22 h | 107k |
| Nov 26, 2025 | Winter storm | 6,461 | 14% | 27 h | 23 h | 67k |
| Dec 16, 2021 | Windstorm | 4,021 | 9% | 34 h | 28 h | 61k |
| Oct 17, 2022 | Winter storm | 4,741 | 10% | 25 h | 9.8 h | 59k |
| Apr 3, 2024 | Winter storm | 4,391 | 10% | 25 h | 14 h | 57k |
| Oct 24, 2017 | Windstorm | 5,651 | 12% | 29 h | 18 h | 56k |
| Jun 27, 2024 | No storm report | 3,191 | 7% | 21 h | 20 h | 45k |
| Mar 7, 2017 | Windstorm | 2,851 | 6% | 31 h | 25 h | 40k |
| Feb 4, 2019 | Ice storm | 4,235 | 9% | 14 h | 7.8 h | 31k |
| Nov 18, 2015 | No storm report | 6,059 | 13% | 6.5 h | 3.5 h | 27k |
| Apr 3, 2024 | Winter storm | 2,803 | 6% | 15 h | 22 h | 26k |
| Mar 23, 2022 | Ice storm | 2,018 | 4% | 29 h | – | 25k |
| Aug 2, 2022 | Thunderstorms | 1,462 | 3% | 22 h | – | 24k |
| Sep 22, 2017 | Thunderstorms | 1,598 | 4% | 14 h | – | 20k |
| Oct 1, 2025 | No storm report | 1,273 | 3% | 15 h | – | 19k |
| Nov 2, 2025 | No storm report | 1,338 | 3% | 14 h | – | 16k |
| Jul 23, 2022 | No storm report | 1,671 | 4% | 7.8 h | – | 13k |
| Aug 18, 2022 | No storm report | 1,673 | 4% | 7.5 h | – | 13k |
| Oct 6, 2025 | No storm report | 598 | 1% | 19 h | – | 11k |
| Jun 21, 2025 | No storm report | 1,547 | 3% | 13 h | – | 10k |
| Aug 10, 2021 | Thunderstorms | 1,660 | 4% | 12 h | – | 9.3k |
| Sep 29, 2024 | No storm report | 2,127 | 5% | 8.0 h | – | 9.1k |
| Aug 9, 2020 | Thunderstorms | 1,371 | 3% | 13 h | – | 8.2k |
| Jul 24, 2022 | No storm report | 1,671 | 4% | 4.8 h | – | 7.9k |
| Jul 4, 2023 | No storm report | 2,520 | 6% | 3.0 h | 2.0 h | 7.0k |
| Nov 1, 2015 | No storm report | 1,262 | 3% | 5.5 h | – | 6.9k |
| Feb 24, 2019 | Winter storm | 1,088 | 2% | 8.8 h | – | 6.8k |
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.
When it happens
The outage clock
Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.
What was happening
Weather behind the outages
Each outage is matched to NOAA storm reports for Marquette from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Winter storm 56%
- No storm on record 22%
- Windstorm 12%
- Thunderstorms 5.4%
- Ice storm 3.9%
Who keeps the lights on
Utilities serving Marquette
As each utility reports to the Energy Information Administration for its whole Michigan territory, not this county alone. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | Outages / yr | Residential ¢/kWh | Customers |
|---|---|---|---|---|---|---|
| Upper Peninsula Power Company | Investor Owned | 446 | 190 | 2.20 | 28.0 | 48k |
| Upper Michigan Energy Resources Corp. | Investor Owned | 1,249 | 240 | 2.46 | 17.5 | 33k |
| City of Marquette | Municipal | 891 | 163 | 3.06 | 16.8 | 15k |
| Alger-Delta Coop Electric Assn | Cooperative | 1,152 | 257 | 3.07 | 23.2 | 9.8k |
| City of Negaunee | Municipal | – | – | – | 20.6 | 2.0k |
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.
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 45,262 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 →