Dallas CountyPower Outage History
What this grade means
Bottom 20% least reliable nationally — frequent and/or long outages. This county ranks in the least reliable fifth of all US counties in our dataset: some combination of frequent outages, long restoration times, or customers affected puts it near the bottom nationally. Backup power is worth prioritizing here rather than treating it as optional.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Oct 29, 2020 | 115 hrs | 22,935 (83%) | Tropical Storm |
| Jan 12, 2023 | 81 hrs | 15,358 (55%) | Tornado |
| Aug 18, 2024 | 28 hrs | 12,382 (45%) | Thunderstorm Wind |
| Jun 14, 2023 | 23 hrs | 12,345 (44%) | Thunderstorm Wind |
| Nov 2, 2020 | 75 hrs | 6,657 (24%) | Tropical Storm |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Dallas County, Alabama that day.
Over the 12 years from 2014 to 2025, Dallas County recorded 1,187 distinct power outage events, averaging 2.4 hours per event.
The single worst outage on record in Dallas County started October 29, 2020 (Tropical Storm), lasting 115 hours and leaving up to 22,935 customers without power (83% of the county) at its peak.
June has historically been the worst month for outages in Dallas County, with 140 events recorded during that month across the dataset.
Based on this history, Dallas County earns a Reliability Grade of F, placing it in the 11th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Alabama
Counties with the closest reliability grade and national percentile to Dallas County.
| County | Grade | National percentile |
|---|---|---|
| Lamar County | F | 11th |
| Chilton County | F | 14th |
| Perry County | F | 14th |
| Bibb County | F | 14th |
| Lowndes County | F | 15th |
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 Dallas County?
Between 2014 and 2025, Dallas County recorded 1,187 outage events, averaging 2.4 hours each.
What is Dallas County's reliability grade?
Dallas County has a Reliability Grade of F, in the 11th national percentile.
What was the worst power outage in Dallas County?
The worst outage on record started October 29, 2020 (Tropical Storm), lasting 115 hours and affecting up to 22,935 customers.