Alexander CountyPower Outage History
2014–2025 · Illinois
Better than average — fewer or shorter outages than most counties. This county's outage history is better than the national median: recorded outages are less frequent and/or shorter in duration than a typical US county experienced over the same 12-year period. It isn't in the top tier nationally, but its track record points to lower-than-average outage risk.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Mar 1, 2017 | <1 hr | 882 (26%) | Unnamed event |
| Mar 1, 2017 | 8 hrs | 882 (26%) | Unnamed event |
| Jun 29, 2018 | 12 hrs | 837 (25%) | Flash Flood |
| Jun 21, 2019 | 24 hrs | 781 (23%) | Flood |
| Feb 10, 2023 | <1 hr | 747 (22%) | Strong Wind |
Over the 12 years from 2014 to 2025, Alexander County recorded 140 distinct power outage events, averaging 3.5 hours per event.
The single worst outage on record in Alexander County started March 1, 2017, lasting less than 1 hour and leaving up to 882 customers without power (26% of the county) at its peak.
March has historically been the worst month for outages in Alexander County, with 24 events recorded during that month across the dataset.
Based on this history, Alexander County earns a Reliability Grade of B, placing it in the 60th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Alexander 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 Alexander County.
| County | Grade | National percentile |
|---|---|---|
| Whiteside County | B | 60th |
| Crawford County | B | 60th |
| Woodford County | C | 60th |
| Lawrence County | C | 60th |
| Randolph County | B | 61st |
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 Alexander County?
Between 2014 and 2025, Alexander County recorded 140 outage events, averaging 3.5 hours each.
What is Alexander County's reliability grade?
Alexander County has a Reliability Grade of B, in the 60th national percentile.
What was the worst power outage in Alexander County?
The worst outage on record started March 1, 2017, lasting less than 1 hour and affecting up to 882 customers.