Marion 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 |
|---|---|---|---|
| Feb 16, 2021 | 6 hrs | 8,582 (37%) | Heavy Snow |
| May 27, 2024 | 45 hrs | 8,513 (37%) | Tornado |
| Apr 2, 2024 | 3 hrs | 8,052 (35%) | Unnamed event |
| Jul 29, 2023 | 51 hrs | 7,668 (33%) | Excessive Heat |
| Aug 1, 2024 | 3 hrs | 6,595 (28%) | Unnamed event |
Over the 12 years from 2014 to 2025, Marion County recorded 376 distinct power outage events, averaging 3.2 hours per event.
The single worst outage on record in Marion County started February 16, 2021 (Heavy Snow), lasting 6 hours and leaving up to 8,582 customers without power (37% of the county) at its peak.
April has historically been the worst month for outages in Marion County, with 47 events recorded during that month across the dataset.
Based on this history, Marion County earns a Reliability Grade of C, placing it in the 59th 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 Marion County.
| County | Grade | National percentile |
|---|---|---|
| Lawrence County | C | 60th |
| Woodford County | C | 60th |
| Alexander County | B | 60th |
| Whiteside County | B | 60th |
| Crawford County | B | 60th |
FAQ
How often does power go out in Marion County?
Between 2014 and 2025, Marion County recorded 376 outage events, averaging 3.2 hours each.
What is Marion County's reliability grade?
Marion County has a Reliability Grade of C, in the 59th national percentile.
What was the worst power outage in Marion County?
The worst outage on record started February 16, 2021 (Heavy Snow), lasting 6 hours and affecting up to 8,582 customers.