Rock Island County Power Outage History
2015–2025 · 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 |
|---|---|---|---|
| Aug 10, 2020 | 148 hrs | 56,765 (68%) | Thunderstorm Wind |
| Jul 12, 2020 | 29 hrs | 29,421 (35%) | Thunderstorm Wind |
| Apr 4, 2023 | 51 hrs | 18,519 (22%) | Hail |
| Jun 4, 2025 | 28 hrs | 18,306 (22%) | Tornado |
| Jul 16, 2024 | 44 hrs | 15,855 (19%) | Flood |
Over the 11 years from 2015 to 2025, Rock Island County recorded 696 distinct power outage events, averaging 2.3 hours per event.
The single worst outage on record in Rock Island County started August 10, 2020 (Thunderstorm Wind), lasting 148 hours and leaving up to 56,765 customers without power (68% of the county) at its peak.
June has historically been the worst month for outages in Rock Island County, with 107 events recorded during that month across the dataset.
Based on this history, Rock Island County earns a Reliability Grade of C, placing it in the 41st percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Rock Island County's outage profile
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Similar counties in Illinois
Counties with the closest reliability grade and national percentile to Rock Island County.
| County | Grade | National percentile |
|---|---|---|
| Clark County | C | 42nd |
| Monroe County | D | 38th |
| Perry County | C | 44th |
| Carroll County | C | 45th |
| Pope County | C | 45th |
FAQ
How often does power go out in Rock Island County?
Between 2015 and 2025, Rock Island County recorded 696 outage events, averaging 2.3 hours each.
What is Rock Island County's reliability grade?
Rock Island County has a Reliability Grade of C, in the 41st national percentile.
What was the worst power outage in Rock Island County?
The worst outage on record started August 10, 2020 (Thunderstorm Wind), lasting 148 hours and affecting up to 56,765 customers.