Logan County Power Outage History
2014–2025 · Illinois
Average — typical outage frequency and duration nationally. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Apr 8, 2020 | 7 hrs | 12,597 (77%) | Thunderstorm Wind |
| Sep 8, 2021 | 1 hrs | 11,438 (70%) | Unnamed event |
| Oct 5, 2016 | 1 hrs | 8,858 (54%) | Unnamed event |
| Oct 1, 2021 | 1 hrs | 6,726 (41%) | Unnamed event |
| Jun 29, 2023 | 85 hrs | 5,432 (33%) | Drought |
Over the 12 years from 2014 to 2025, Logan County recorded 533 distinct power outage events, averaging 2.7 hours per event.
The single worst outage on record in Logan County started April 8, 2020 (Thunderstorm Wind), lasting 7 hours and leaving up to 12,597 customers without power (77% of the county) at its peak.
June has historically been the worst month for outages in Logan County, with 72 events recorded during that month across the dataset.
Based on this history, Logan County earns a Reliability Grade of C, placing it in the 50th percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Illinois
Counties with the closest reliability grade and national percentile to Logan County.
| County | Grade | National percentile |
|---|---|---|
| Jo Daviess County | C | 50th |
| Knox County | C | 50th |
| Calhoun County | C | 49th |
| Bureau County | C | 50th |
| LaSalle County | C | 49th |
FAQ
How often does power go out in Logan County?
Between 2014 and 2025, Logan County recorded 533 outage events, averaging 2.7 hours each.
What is Logan County's reliability grade?
Logan County has a Reliability Grade of C, in the 50th national percentile.
What was the worst power outage in Logan County?
The worst outage on record started April 8, 2020 (Thunderstorm Wind), lasting 7 hours and affecting up to 12,597 customers.