Clark 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 |
|---|---|---|---|
| Jul 12, 2020 | 21 hrs | 14,305 (20%) | Thunderstorm Wind |
| Mar 3, 2023 | 43 hrs | 14,248 (20%) | High Wind |
| Nov 15, 2018 | 61 hrs | 9,727 (13%) | Ice Storm |
| Nov 26, 2025 | 4 hrs | 8,671 (12%) | Unnamed event |
| Apr 24, 2023 | 3 hrs | 8,514 (12%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Clark County, Indiana that day.
Over the 12 years from 2014 to 2025, Clark County recorded 672 distinct power outage events, averaging 2.6 hours per event.
The single worst outage on record in Clark County started July 12, 2020 (Thunderstorm Wind), lasting 21 hours and leaving up to 14,305 customers without power (20% of the county) at its peak.
June has historically been the worst month for outages in Clark County, with 89 events recorded during that month across the dataset.
Based on this history, Clark County earns a Reliability Grade of B, placing it in the 69th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Indiana
Counties with the closest reliability grade and national percentile to Clark County.
| County | Grade | National percentile |
|---|---|---|
| Carroll County | B | 68th |
| 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 Clark County?
Between 2014 and 2025, Clark County recorded 672 outage events, averaging 2.6 hours each.
What is Clark County's reliability grade?
Clark County has a Reliability Grade of B, in the 69th national percentile.
What was the worst power outage in Clark County?
The worst outage on record started July 12, 2020 (Thunderstorm Wind), lasting 21 hours and affecting up to 14,305 customers.