Carroll CountyPower Outage History
2015–2025 · Missouri
Better than average — fewer or shorter outages than most counties.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jul 16, 2024 | 29 hrs | 2,368 (42%) | Unnamed event |
| Mar 7, 2017 | 28 hrs | 1,250 (22%) | Tornado |
| Jul 16, 2020 | 2 hrs | 1,046 (18%) | Unnamed event |
| Jul 3, 2020 | 3 hrs | 1,045 (18%) | Unnamed event |
| Aug 12, 2021 | 7 hrs | 1,014 (18%) | Unnamed event |
Over the 11 years from 2015 to 2025, Carroll County recorded 448 distinct power outage events, averaging 2.2 hours per event.
The single worst outage on record in Carroll County started July 16, 2024, lasting 29 hours and leaving up to 2,368 customers without power (42% of the county) at its peak.
July has historically been the worst month for outages in Carroll County, with 77 events recorded during that month across the dataset.
Based on this history, Carroll County earns a Reliability Grade of B, placing it in the 64th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Carroll County's outage profile
See more picks in our Best Small Power Stations (Under 1,000Wh) roundup.
Outage-prep kit
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Similar counties in Missouri
Counties with the closest reliability grade and national percentile to Carroll County.
| County | Grade | National percentile |
|---|---|---|
| Mississippi County | B | 65th |
| Clinton County | B | 65th |
| St. Francois County | B | 64th |
| Perry County | B | 63rd |
| Clay County | B | 66th |
Most reliable counties in Missouri
The top 3 counties in Missouri by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Mercer County | A | 98th |
| McDonald County | A | 97th |
| Boone County | A | 97th |
Least reliable counties in Missouri
The bottom 3 counties in Missouri by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| St. Louis County | F | 10th |
| Reynolds County | F | 20th |
| Iron County | D | 22nd |
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 Carroll County?
Between 2015 and 2025, Carroll County recorded 448 outage events, averaging 2.2 hours each.
What is Carroll County's reliability grade?
Carroll County has a Reliability Grade of B, in the 64th national percentile.
What was the worst power outage in Carroll County?
The worst outage on record started July 16, 2024, lasting 29 hours and affecting up to 2,368 customers.