Hardin CountyPower Outage History
2017–2025 · Illinois
Average — typical outage frequency and duration nationally. This county sits in the middle of the national distribution — its outage frequency and duration over the past 12 years are close to the nationwide median, neither notably better nor worse than most other US counties. A typical amount of backup-power preparedness is reasonable here.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Aug 29, 2018 | 3 hrs | 1,712 (60%) | Unnamed event |
| Jan 12, 2018 | 8 hrs | 1,512 (53%) | Dense Fog |
| Jun 29, 2018 | 3 hrs | 1,445 (51%) | Thunderstorm Wind |
| Jul 14, 2018 | 4 hrs | 1,019 (36%) | Excessive Heat |
| Feb 15, 2021 | 1 hrs | 930 (33%) | Winter Storm |
Over the 9 years from 2017 to 2025, Hardin County recorded 430 distinct power outage events, averaging 2.5 hours per event.
The single worst outage on record in Hardin County started August 29, 2018, lasting 3 hours and leaving up to 1,712 customers without power (60% of the county) at its peak.
June has historically been the worst month for outages in Hardin County, with 65 events recorded during that month across the dataset.
Based on this history, Hardin County earns a Reliability Grade of C, placing it in the 53rd percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Hardin County's outage profile
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Read our mission →Similar counties in Illinois
Counties with the closest reliability grade and national percentile to Hardin County.
| County | Grade | National percentile |
|---|---|---|
| Johnson County | C | 53rd |
| Hancock County | C | 54th |
| Bond County | C | 52nd |
| Jasper County | C | 54th |
| Piatt County | C | 52nd |
Most reliable counties in Illinois
The top 3 counties in Illinois by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Wabash County | A | 97th |
| Massac County | A | 94th |
| Kendall County | A | 93rd |
Least reliable counties in Illinois
The bottom 3 counties in Illinois by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Mercer County | F | 11th |
| Stark County | F | 13th |
| Henderson County | F | 19th |
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 Hardin County?
Between 2017 and 2025, Hardin County recorded 430 outage events, averaging 2.5 hours each.
What is Hardin County's reliability grade?
Hardin County has a Reliability Grade of C, in the 53rd national percentile.
What was the worst power outage in Hardin County?
The worst outage on record started August 29, 2018, lasting 3 hours and affecting up to 1,712 customers.