Madison CountyPower Outage History
What this grade means
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 |
|---|---|---|---|
| Jan 2, 2022 | 4 hrs | 24,593 (17%) | Unnamed event |
| Jun 28, 2018 | 16 hrs | 21,165 (15%) | Thunderstorm Wind |
| May 7, 2016 | 31 hrs | 19,695 (14%) | Thunderstorm Wind |
| May 16, 2025 | 70 hrs | 18,731 (13%) | Tornado |
| Jul 1, 2023 | 108 hrs | 18,539 (13%) | Thunderstorm Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Madison County, Illinois that day.
Over the 12 years from 2014 to 2025, Madison County recorded 1,011 distinct power outage events, averaging 2.7 hours per event.
The single worst outage on record in Madison County started January 2, 2022, lasting 4 hours and leaving up to 24,593 customers without power (17% of the county) at its peak.
July has historically been the worst month for outages in Madison County, with 135 events recorded during that month across the dataset.
Based on this history, Madison County earns a Reliability Grade of B, placing it in the 65th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Illinois
Counties with the closest reliability grade and national percentile to Madison County.
| County | Grade | National percentile |
|---|---|---|
| Cumberland County | B | 65th |
| Kankakee County | B | 66th |
| Livingston County | B | 65th |
| Macon County | B | 64th |
| Morgan County | B | 64th |
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 Madison County?
Between 2014 and 2025, Madison County recorded 1,011 outage events, averaging 2.7 hours each.
What is Madison County's reliability grade?
Madison County has a Reliability Grade of B, in the 65th national percentile.
What was the worst power outage in Madison County?
The worst outage on record started January 2, 2022, lasting 4 hours and affecting up to 24,593 customers.