Power outage history
Montmorency County Michigan
61hours
without power for the average customer in a typical year, 2018–2025
2nd most of 83 in Michigan 9.2× 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 Montmorency'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 15.9 days for the average customer. Hatched years have a thin record and are left out of the averages.
Montmorency, 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 |
|---|---|---|---|---|---|---|
| Mar 29, 2025 | Ice storm | 6,073 | 100% | 21.3 d | 2.5 h | 2.3M |
| Dec 16, 2021 | Windstorm | 3,568 | 59% | 4.4 d | 2.5 d | 128k |
| Jun 16, 2022 | No storm report | 2,724 | 45% | 2.2 d | 41 h | 49k |
| Nov 5, 2022 | No storm report | 2,541 | 42% | 2.1 d | 25 h | 49k |
| Aug 11, 2021 | Thunderstorms | 3,842 | 63% | 46 h | 28 h | 46k |
| Jul 18, 2020 | No storm report | 816 | 13% | 41 h | 26 h | 17k |
| Apr 12, 2024 | No storm report | 763 | 13% | 39 h | 28 h | 16k |
| Aug 29, 2021 | No storm report | 1,836 | 30% | 26 h | 17 h | 12k |
| Apr 2, 2024 | No storm report | 666 | 11% | 25 h | 20 h | 11k |
| Dec 24, 2015 | No storm report | 290 | 5% | 2.5 d | – | 11k |
| Apr 13, 2020 | No storm report | 1,331 | 22% | 29 h | 18 h | 10k |
| Feb 28, 2024 | No storm report | 1,975 | 33% | 25 h | 4.2 h | 10k |
| Dec 12, 2020 | Winter storm | 864 | 14% | 28 h | 23 h | 9.8k |
| Nov 15, 2022 | No storm report | 560 | 9% | 37 h | 25 h | 9.6k |
| Mar 15, 2025 | No storm report | 650 | 11% | 27 h | 12 h | 9.5k |
| Nov 1, 2020 | No storm report | 767 | 13% | 24 h | 22 h | 9.2k |
| Mar 23, 2022 | No storm report | 1,512 | 25% | 19 h | 15 h | 9.1k |
| Jul 9, 2020 | Thunderstorms | 1,960 | 32% | 11 h | 7.2 h | 8.8k |
| Mar 11, 2021 | No storm report | 1,886 | 31% | 28 h | 4.8 h | 8.5k |
| Aug 2, 2015 | Thunderstorms | 225 | 4% | 35 h | – | 7.3k |
| Dec 30, 2019 | No storm report | 1,434 | 24% | 9.0 h | 4.5 h | 6.8k |
| Mar 6, 2025 | No storm report | 1,511 | 25% | 12 h | 1.8 h | 6.5k |
| Jul 10, 2023 | No storm report | 1,915 | 32% | 2.8 h | 2.2 h | 5.3k |
| Oct 18, 2022 | No storm report | 688 | 11% | 15 h | 4.0 h | 4.5k |
| Jun 21, 2025 | No storm report | 736 | 12% | 14 h | 11 h | 4.5k |
| Dec 9, 2023 | No storm report | 343 | 6% | 23 h | 21 h | 4.3k |
| Jul 2, 2020 | No storm report | 880 | 14% | 5.0 h | 11 h | 4.3k |
| Apr 29, 2025 | Thunderstorms | 911 | 15% | 11 h | 6.0 h | 4.2k |
| Mar 25, 2023 | Winter storm | 352 | 6% | 25 h | 23 h | 4.0k |
| Jan 12, 2024 | Winter storm | 640 | 11% | 15 h | 3.5 h | 3.9k |
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 Montmorency from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Ice storm 78%
- No storm on record 14%
- Windstorm 4.4%
- Thunderstorms 2.0%
- Winter storm 0.8%
Who keeps the lights on
Utilities serving Montmorency
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 |
|---|---|---|---|---|---|---|
| Consumers Energy Co | Investor Owned | 820 | 164 | 1.40 | 20.7 | 1.7M |
| Great Lakes Energy Coop | Cooperative | 4,401 | 315 | 4.09 | 20.3 | 123k |
| Presque Isle Elec & Gas Coop | Cooperative | 9,074 | 307 | 2.91 | 23.9 | 33k |
| Alpena Power Co | Investor Owned | 2,994 | 63 | 2.50 | 18.7 | 14k |
| Wolverine Power Supply Coop | Cooperative | – | – | – | – | – |
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
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 6,073 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 →