Carroll 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 |
|---|---|---|---|
| Aug 10, 2020 | 34 hrs | 2,767 (26%) | Thunderstorm Wind |
| Nov 15, 2020 | 8 hrs | 1,948 (19%) | Unnamed event |
| Jun 18, 2020 | 2 hrs | 1,932 (18%) | Unnamed event |
| Jun 23, 2016 | 5 hrs | 1,913 (18%) | Thunderstorm Wind |
| Oct 22, 2020 | <1 hr | 1,856 (18%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Carroll County, Indiana that day.
Over the 12 years from 2014 to 2025, Carroll County recorded 262 distinct power outage events, averaging 3.6 hours per event.
The single worst outage on record in Carroll County started August 10, 2020 (Thunderstorm Wind), lasting 34 hours and leaving up to 2,767 customers without power (26% of the county) at its peak.
June has historically been the worst month for outages in Carroll County, with 37 events recorded during that month across the dataset.
Based on this history, Carroll County earns a Reliability Grade of B, placing it in the 68th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Indiana
Counties with the closest reliability grade and national percentile to Carroll County.
| County | Grade | National percentile |
|---|---|---|
| Clark County | B | 69th |
| Fayette County | B | 68th |
| Grant County | B | 70th |
| Ripley County | B | 66th |
| Delaware County | B | 66th |
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 2014 and 2025, Carroll County recorded 262 outage events, averaging 3.6 hours each.
What is Carroll County's reliability grade?
Carroll County has a Reliability Grade of B, in the 68th national percentile.
What was the worst power outage in Carroll County?
The worst outage on record started August 10, 2020 (Thunderstorm Wind), lasting 34 hours and affecting up to 2,767 customers.