Dimmit 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 |
|---|---|---|---|
| Jul 8, 2015 | <1 hr | 4,278 (61%) | Unnamed event |
| Jul 8, 2015 | <1 hr | 4,278 (61%) | Unnamed event |
| Dec 19, 2014 | 10 hrs | 4,196 (60%) | Unnamed event |
| May 13, 2015 | 5 hrs | 4,065 (58%) | Unnamed event |
| Sep 22, 2018 | <1 hr | 2,594 (37%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Dimmit County, Texas that day.
Over the 12 years from 2014 to 2025, Dimmit County recorded 853 distinct power outage events, averaging 19.7 hours per event.
The single worst outage on record in Dimmit County started July 8, 2015, lasting less than 1 hour and leaving up to 4,278 customers without power (61% of the county) at its peak.
May has historically been the worst month for outages in Dimmit County, with 127 events recorded during that month across the dataset.
Based on this history, Dimmit County earns a Reliability Grade of F, placing it in the 14th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Texas
Counties with the closest reliability grade and national percentile to Dimmit County.
| County | Grade | National percentile |
|---|---|---|
| Panola County | F | 14th |
| Franklin County | F | 14th |
| Houston County | F | 13th |
| Limestone County | F | 13th |
| Edwards County | F | 14th |
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 Dimmit County?
Between 2014 and 2025, Dimmit County recorded 853 outage events, averaging 19.7 hours each.
What is Dimmit County's reliability grade?
Dimmit County has a Reliability Grade of F, in the 14th national percentile.
What was the worst power outage in Dimmit County?
The worst outage on record started July 8, 2015, lasting less than 1 hour and affecting up to 4,278 customers.