Power outage history
Alger County Michigan
8.2hours
without power for the average customer in a typical year, 2018–2025
63rd most of 83 in Michigan 1.2× 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 Alger's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2023 was the worst well-recorded year, at 16 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Alger, 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 |
|---|---|---|---|---|---|---|
| May 1, 2023 | Winter storm | 2,746 | 60% | 2.3 d | 12 min | 64k |
| Dec 29, 2025 | Winter storm | 1,787 | 39% | 2.7 d | 32 h | 37k |
| Jun 10, 2020 | Tropical Storm Cristobal | 3,181 | 70% | 13 h | 5.2 h | 23k |
| Nov 27, 2019 | Winter storm | 296 | 7% | 2.4 d | 2.4 d | 16k |
| Oct 18, 2022 | Windstorm | 1,369 | 30% | 34 h | 14 h | 14k |
| Apr 13, 2020 | Winter storm | 1,288 | 28% | 21 h | 5.5 h | 9.6k |
| Sep 6, 2020 | Windstorm | 2,108 | 46% | 8.0 h | 1.5 h | 9.0k |
| Nov 1, 2020 | Winter storm | 1,263 | 28% | 18 h | 2.8 h | 8.6k |
| Nov 26, 2025 | Winter storm | 797 | 18% | 22 h | 5.0 h | 8.5k |
| Sep 21, 2018 | No storm report | 427 | 9% | 17 h | 4.5 h | 5.1k |
| Aug 9, 2025 | No storm report | 749 | 16% | 13 h | 2.2 h | 4.8k |
| Mar 29, 2021 | Windstorm | 972 | 21% | 6.2 h | 4.8 h | 4.2k |
| May 31, 2020 | No storm report | 3,430 | 75% | 1.5 h | 1.2 h | 3.9k |
| May 9, 2022 | No storm report | 860 | 19% | 8.2 h | 7.2 h | 3.5k |
| Apr 28, 2025 | No storm report | 719 | 16% | 11 h | 11 h | 3.0k |
| Mar 5, 2025 | Winter storm | 802 | 18% | 3.8 h | 12 h | 3.0k |
| Dec 24, 2015 | Windstorm | 433 | 10% | 7.2 h | 3.2 h | 2.9k |
| Aug 20, 2025 | No storm report | 730 | 16% | 3.8 h | 3.2 h | 2.7k |
| May 4, 2018 | No storm report | 296 | 7% | 9.0 h | 9.0 h | 2.6k |
| Dec 7, 2019 | No storm report | 939 | 21% | 4.0 h | 2.2 h | 2.2k |
| Oct 24, 2017 | Windstorm | 279 | 6% | 12 h | 4.8 h | 2.2k |
| Dec 31, 2019 | Winter storm | 161 | 4% | 27 h | – | 2.0k |
| Oct 4, 2018 | No storm report | 624 | 14% | 6.0 h | 4.2 h | 1.9k |
| Jun 7, 2015 | No storm report | 167 | 4% | 19 h | – | 1.8k |
| Jan 16, 2023 | No storm report | 306 | 7% | 5.2 h | 9.2 h | 1.6k |
| Jun 21, 2025 | No storm report | 788 | 17% | 2.8 h | 30 min | 1.5k |
| Jun 30, 2022 | Thunderstorms | 289 | 6% | 7.5 h | 18 h | 1.5k |
| Jul 25, 2015 | No storm report | 449 | 10% | 3.2 h | 3.5 h | 1.5k |
| Oct 17, 2022 | No storm report | 306 | 7% | 6.8 h | 4.0 h | 1.4k |
| Oct 16, 2019 | No storm report | 560 | 12% | 2.5 h | 2.5 h | 1.4k |
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 Alger from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Winter storm 55%
- No storm on record 26%
- Windstorm 9.9%
- Tropical storm 8.3%
- Thunderstorms 0.5%
Who keeps the lights on
Utilities serving Alger
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 |
| Alger-Delta Coop Electric Assn | Cooperative | 1,152 | 257 | 3.07 | 23.2 | 9.8k |
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.
Next door
Neighbouring counties
- Alger (this county) 8.2 h
- Schoolcraft 7.4 h
- Luce 6.0 h
- Marquette 4.7 h
- Delta 3.8 h
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 4,553 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 →