Brown CountyPower Outage History
What this grade means
(How grades are calculated)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 |
|---|---|---|---|
| Apr 14, 2022 | 4 hrs | 2,690 (70%) | Unnamed event |
| May 28, 2016 | 2 hrs | 1,891 (49%) | Unnamed event |
| Jan 10, 2016 | 3 hrs | 1,891 (49%) | Unnamed event |
| Apr 25, 2020 | <1 hr | 1,885 (49%) | Unnamed event |
| Nov 12, 2015 | 2 hrs | 1,885 (49%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Brown County, Illinois that day.
Over the 11 years from 2015 to 2025, Brown County recorded 205 distinct power outage events, averaging 6.7 hours per event.
The single worst outage on record in Brown County started April 14, 2022, lasting 4 hours and leaving up to 2,690 customers without power (70% of the county) at its peak.
July has historically been the worst month for outages in Brown County, with 51 events recorded during that month across the dataset.
Based on this history, Brown County earns a Reliability Grade of B, placing it in the 63rd percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Illinois
Counties with the closest reliability grade and national percentile to Brown County.
| County | Grade | National percentile |
|---|---|---|
| Scott County | B | 63rd |
| Will County | B | 63rd |
| Adams County | B | 62nd |
| Franklin County | B | 62nd |
| 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 Brown County?
Between 2015 and 2025, Brown County recorded 205 outage events, averaging 6.7 hours each.
What is Brown County's reliability grade?
Brown County has a Reliability Grade of B, in the 63rd national percentile.
What was the worst power outage in Brown County?
The worst outage on record started April 14, 2022, lasting 4 hours and affecting up to 2,690 customers.