Power outage history
Saginaw County Michigan
4.8hours
without power for the average customer in a typical year, 2018–2025
77th most of 83 in Michigan 27% 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 Saginaw's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2020 was the worst well-recorded year, at 8.2 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Saginaw, 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 |
|---|---|---|---|---|---|---|
| Jun 10, 2020 | Thunderstorms | 19,531 | 15% | 3.3 d | 2.6 d | 832k |
| Jul 20, 2019 | Thunderstorms | 11,262 | 8% | 2.6 d | 45 h | 436k |
| Sep 7, 2021 | Thunderstorms | 11,916 | 9% | 42 h | 36 h | 284k |
| May 4, 2018 | Windstorm | 11,255 | 8% | 2.1 d | 45 h | 233k |
| May 16, 2025 | Tornadoes | 5,439 | 4% | 2.8 d | 3.2 d | 201k |
| Dec 11, 2021 | Windstorm | 5,814 | 4% | 33 h | 35 h | 123k |
| Jan 12, 2024 | Winter storm | 4,902 | 4% | 33 h | – | 107k |
| Mar 15, 2025 | No storm report | 6,319 | 5% | 29 h | 16 h | 105k |
| Nov 5, 2022 | Windstorm | 4,463 | 3% | 34 h | – | 97k |
| Feb 24, 2016 | Winter storm | 8,044 | 6% | 24 h | 19 h | 96k |
| Apr 2, 2025 | No storm report | 13,829 | 10% | 19 h | 17 h | 81k |
| Apr 16, 2023 | No storm report | 8,706 | 7% | 9.2 h | 8.2 h | 67k |
| May 16, 2023 | No storm report | 8,330 | 6% | 9.2 h | 14 h | 49k |
| Apr 6, 2017 | No storm report | 6,121 | 5% | 20 h | 19 h | 45k |
| Aug 27, 2018 | Thunderstorms | 5,865 | 4% | 11 h | 11 h | 44k |
| Mar 30, 2025 | Thunderstorms | 2,856 | 2% | 22 h | – | 42k |
| Mar 9, 2017 | No storm report | 3,482 | 3% | 21 h | – | 42k |
| Jul 7, 2016 | Thunderstorms | 2,741 | 2% | 14 h | – | 30k |
| Aug 24, 2021 | Thunderstorms | 4,334 | 3% | 7.2 h | – | 27k |
| Jul 29, 2019 | Thunderstorms | 4,651 | 4% | 7.8 h | – | 24k |
| Aug 12, 2021 | No storm report | 4,262 | 3% | 6.8 h | – | 23k |
| May 27, 2022 | No storm report | 6,640 | 5% | 4.0 h | 3.8 h | 22k |
| Aug 28, 2021 | Thunderstorms | 3,255 | 2% | 11 h | – | 22k |
| Dec 3, 2015 | No storm report | 8,174 | 6% | 7.0 h | 3.2 h | 22k |
| Aug 12, 2025 | No storm report | 3,149 | 2% | 7.0 h | – | 20k |
| Aug 19, 2023 | No storm report | 3,343 | 3% | 5.8 h | – | 19k |
| Feb 8, 2019 | No storm report | 1,804 | 1% | 12 h | – | 19k |
| Jul 24, 2023 | No storm report | 2,272 | 2% | 9.5 h | – | 18k |
| May 20, 2024 | Thunderstorms | 4,216 | 3% | 4.8 h | – | 18k |
| Aug 22, 2017 | No storm report | 8,006 | 6% | 3.2 h | 1.5 h | 17k |
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 Saginaw from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Thunderstorms 53%
- No storm on record 23%
- Windstorm 14%
- Tornadoes 5.9%
- Winter storm 4.0%
Who keeps the lights on
Utilities serving Saginaw
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 |
|---|---|---|---|---|---|---|
| DTE Electric Company | Investor Owned | 192 | 151 | 1.16 | 20.3 | 2.1M |
| Consumers Energy Co | Investor Owned | 820 | 164 | 1.40 | 20.7 | 1.7M |
| Tri-County Electric Coop (MI) | Cooperative | 1,153 | 119 | 1.82 | 18.3 | 23k |
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 132,604 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 →