Boone County Power Outage History
2014–2025 · Illinois
Better than average — fewer or shorter outages than most counties. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Aug 16, 2025 | 53 hrs | 7,254 (31%) | Thunderstorm Wind |
| Oct 21, 2015 | 2 hrs | 5,586 (24%) | Unnamed event |
| Jun 29, 2017 | 22 hrs | 3,971 (17%) | Tornado |
| Feb 22, 2023 | 54 hrs | 2,892 (12%) | Winter Weather |
| Apr 1, 2023 | 36 hrs | 2,640 (11%) | Tornado |
Over the 12 years from 2014 to 2025, Boone County recorded 298 distinct power outage events, averaging 3.3 hours per event.
The single worst outage on record in Boone County started August 16, 2025 (Thunderstorm Wind), lasting 53 hours and leaving up to 7,254 customers without power (31% of the county) at its peak.
June has historically been the worst month for outages in Boone County, with 43 events recorded during that month across the dataset.
Based on this history, Boone County earns a Reliability Grade of B, placing it in the 73rd percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Boone County's outage profile
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Similar counties in Illinois
Counties with the closest reliability grade and national percentile to Boone County.
| County | Grade | National percentile |
|---|---|---|
| Ford County | B | 73rd |
| Jackson County | B | 74th |
| Williamson County | B | 72nd |
| Pulaski County | B | 75th |
| Fulton County | B | 71st |
FAQ
How often does power go out in Boone County?
Between 2014 and 2025, Boone County recorded 298 outage events, averaging 3.3 hours each.
What is Boone County's reliability grade?
Boone County has a Reliability Grade of B, in the 73rd national percentile.
What was the worst power outage in Boone County?
The worst outage on record started August 16, 2025 (Thunderstorm Wind), lasting 53 hours and affecting up to 7,254 customers.