Louisa CountyPower Outage History
What this grade means
(How grades are calculated)Average — typical outage frequency and duration nationally. This county sits in the middle of the national distribution — its outage frequency and duration over the past 12 years are close to the nationwide median, neither notably better nor worse than most other US counties. A typical amount of backup-power preparedness is reasonable here.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jul 20, 2016 | 7 hrs | 1,884 (41%) | Thunderstorm Wind |
| Mar 27, 2015 | 1 hrs | 1,711 (37%) | Unnamed event |
| Jan 16, 2015 | 1 hrs | 1,457 (32%) | Unnamed event |
| Jan 16, 2015 | <1 hr | 1,457 (32%) | Unnamed event |
| May 30, 2017 | 1 hrs | 1,441 (31%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Louisa County, Iowa that day.
Over the 12 years from 2014 to 2025, Louisa County recorded 542 distinct power outage events, averaging 2.5 hours per event.
The single worst outage on record in Louisa County started July 20, 2016 (Thunderstorm Wind), lasting 7 hours and leaving up to 1,884 customers without power (41% of the county) at its peak.
July has historically been the worst month for outages in Louisa County, with 71 events recorded during that month across the dataset.
Based on this history, Louisa County earns a Reliability Grade of C, placing it in the 44th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Iowa
Counties with the closest reliability grade and national percentile to Louisa County.
| County | Grade | National percentile |
|---|---|---|
| Adams County | C | 43rd |
| Jones County | C | 45th |
| Grundy County | C | 46th |
| Ringgold County | C | 42nd |
| Calhoun County | C | 47th |
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 Louisa County?
Between 2014 and 2025, Louisa County recorded 542 outage events, averaging 2.5 hours each.
What is Louisa County's reliability grade?
Louisa County has a Reliability Grade of C, in the 44th national percentile.
What was the worst power outage in Louisa County?
The worst outage on record started July 20, 2016 (Thunderstorm Wind), lasting 7 hours and affecting up to 1,884 customers.