Power outage history
Hillsdale County Michigan
19hours
without power for the average customer in a typical year, 2018–2025
28th most of 83 in Michigan 2.9× 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 Hillsdale'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 2.9 days for the average customer. Hatched years have a thin record and are left out of the averages.
Hillsdale, 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 |
|---|---|---|---|---|---|---|
| Feb 22, 2023 | Ice storm | 17,856 | 58% | 8.0 d | 6.3 d | 1.9M |
| Aug 12, 2021 | Thunderstorms | 13,663 | 44% | 5.5 d | 5.0 d | 1.1M |
| Aug 29, 2022 | Thunderstorms | 4,349 | 14% | 2.8 d | 2.3 d | 165k |
| Dec 28, 2015 | Winter storm | 3,757 | 12% | 2.1 d | 30 h | 105k |
| Mar 30, 2025 | Thunderstorms | 3,290 | 11% | 4.1 d | 3.8 d | 94k |
| Jun 21, 2021 | Thunderstorms | 5,790 | 19% | 32 h | 16 h | 82k |
| Mar 10, 2017 | No storm report | 2,818 | 9% | 2.0 d | 44 h | 81k |
| Jun 10, 2020 | Thunderstorms | 1,927 | 6% | 2.8 d | 2.3 d | 75k |
| Jul 26, 2023 | Thunderstorms | 3,008 | 10% | 37 h | 23 h | 70k |
| Mar 3, 2023 | Winter storm | 4,241 | 14% | 28 h | 18 h | 63k |
| Mar 9, 2017 | No storm report | 4,263 | 14% | 21 h | 30 h | 57k |
| May 23, 2019 | Thunderstorms | 3,801 | 12% | 35 h | 24 h | 49k |
| Nov 5, 2022 | No storm report | 1,832 | 6% | 42 h | 25 h | 49k |
| Apr 26, 2017 | No storm report | 5,106 | 17% | 11 h | 11 h | 43k |
| Jun 1, 2018 | No storm report | 4,960 | 16% | 15 h | 12 h | 34k |
| Apr 15, 2018 | No storm report | 2,561 | 8% | 35 h | 33 h | 30k |
| Jan 3, 2021 | No storm report | 2,522 | 8% | 16 h | 11 h | 26k |
| Oct 20, 2018 | No storm report | 2,144 | 7% | 24 h | 25 h | 25k |
| Apr 30, 2017 | No storm report | 5,027 | 16% | 7.0 h | 6.2 h | 25k |
| Aug 6, 2021 | No storm report | 1,363 | 4% | 27 h | – | 23k |
| Sep 7, 2021 | Thunderstorms | 1,401 | 5% | 27 h | – | 23k |
| Feb 12, 2019 | Ice storm | 1,696 | 5% | 29 h | 28 h | 21k |
| Jul 10, 2024 | Hurricane Beryl | 1,649 | 5% | 26 h | 21 h | 18k |
| Aug 3, 2022 | Thunderstorms | 711 | 2% | 32 h | – | 18k |
| Nov 10, 2015 | No storm report | 1,154 | 4% | 17 h | – | 18k |
| Mar 10, 2016 | No storm report | 5,040 | 16% | 5.5 h | 4.8 h | 17k |
| Apr 6, 2017 | No storm report | 1,475 | 5% | 22 h | – | 16k |
| Jul 4, 2018 | No storm report | 1,993 | 6% | 11 h | 11 h | 16k |
| Jun 30, 2017 | No storm report | 5,027 | 16% | 6.0 h | 30 min | 15k |
| Jun 24, 2025 | No storm report | 1,619 | 5% | 12 h | 11 h | 15k |
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 Hillsdale from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Ice storm 45%
- Thunderstorms 40%
- No storm on record 12%
- Winter storm 1.6%
- Tropical storm 0.9%
Who keeps the lights on
Utilities serving Hillsdale
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 |
| Hillsdale Board of Public Wks | MI | 127 | 54 | 2.30 | 12.1 | 39k |
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
- Lenawee 24 h
- Hillsdale (this county) 19 h
- Jackson 16 h
- Branch 15 h
- Calhoun 13 h
- Steuben, IN 6.1 h
- Fulton, OH 3.0 h
- Williams, OH 1.6 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 30,914 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 →