Ionia CountyPower Outage History
What this grade means
Bottom 20% least reliable nationally — frequent and/or long outages. This county ranks in the least reliable fifth of all US counties in our dataset: some combination of frequent outages, long restoration times, or customers affected puts it near the bottom nationally. Backup power is worth prioritizing here rather than treating it as optional.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Feb 6, 2019 | 135 hrs | 14,143 (40%) | Ice Storm |
| Aug 25, 2023 | 102 hrs | 12,623 (36%) | Thunderstorm Wind |
| Mar 9, 2017 | 21 hrs | 10,361 (29%) | High Wind |
| May 10, 2018 | 8 hrs | 5,887 (17%) | Unnamed event |
| Aug 27, 2024 | 61 hrs | 5,849 (17%) | Thunderstorm Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Ionia County, Michigan that day.
Over the 12 years from 2014 to 2025, Ionia County recorded 540 distinct power outage events, averaging 5.4 hours per event.
The single worst outage on record in Ionia County started February 6, 2019 (Ice Storm), lasting 135 hours and leaving up to 14,143 customers without power (40% of the county) at its peak.
July has historically been the worst month for outages in Ionia County, with 73 events recorded during that month across the dataset.
Based on this history, Ionia County earns a Reliability Grade of F, placing it in the 12th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Michigan
Counties with the closest reliability grade and national percentile to Ionia County.
| County | Grade | National percentile |
|---|---|---|
| Branch County | F | 13th |
| Oakland County | F | 11th |
| Leelanau County | F | 13th |
| Washtenaw County | F | 11th |
| Berrien County | F | 11th |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
FAQ
How often does power go out in Ionia County?
Between 2014 and 2025, Ionia County recorded 540 outage events, averaging 5.4 hours each.
What is Ionia County's reliability grade?
Ionia County has a Reliability Grade of F, in the 12th national percentile.
What was the worst power outage in Ionia County?
The worst outage on record started February 6, 2019 (Ice Storm), lasting 135 hours and affecting up to 14,143 customers.