Callahan CountyPower Outage History
2014–2025 · Texas
Bottom 20% least reliable nationally — frequent and/or long outages.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Aug 23, 2024 | 26 hrs | 5,021 (86%) | Drought |
| Feb 15, 2021 | 79 hrs | 3,715 (64%) | Winter Storm Uri |
| May 25, 2024 | 3 hrs | 3,678 (63%) | Hail |
| Jun 2, 2023 | 19 hrs | 3,552 (61%) | Drought |
| Nov 11, 2022 | <1 hr | 2,961 (51%) | Drought |
Over the 12 years from 2014 to 2025, Callahan County recorded 878 distinct power outage events, averaging 2.5 hours per event.
The single worst outage on record in Callahan County started August 23, 2024 (Drought), lasting 26 hours and leaving up to 5,021 customers without power (86% of the county) at its peak.
May has historically been the worst month for outages in Callahan County, with 118 events recorded during that month across the dataset.
Based on this history, Callahan County earns a Reliability Grade of F, placing it in the 20th percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Texas
Counties with the closest reliability grade and national percentile to Callahan County.
| County | Grade | National percentile |
|---|---|---|
| Collingsworth County | F | 20th |
| Austin County | F | 20th |
| Blanco County | D | 20th |
| Nacogdoches County | F | 19th |
| Grimes County | D | 20th |
Most reliable counties in Texas
The top 3 counties in Texas by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Zavala County | A | 95th |
| Jasper County | A | 94th |
| Fayette County | A | 91st |
Least reliable counties in Texas
The bottom 3 counties in Texas by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Trinity County | F | 2nd |
| Orange County | F | 2nd |
| Marion County | F | 4th |
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 Callahan County?
Between 2014 and 2025, Callahan County recorded 878 outage events, averaging 2.5 hours each.
What is Callahan County's reliability grade?
Callahan County has a Reliability Grade of F, in the 20th national percentile.
What was the worst power outage in Callahan County?
The worst outage on record started August 23, 2024 (Drought), lasting 26 hours and affecting up to 5,021 customers.