Atascosa 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 |
|---|---|---|---|
| Feb 15, 2021 | 76 hrs | 7,182 (21%) | Winter Storm Uri |
| May 26, 2023 | 2 hrs | 6,070 (18%) | Flash Flood |
| Mar 13, 2021 | 3 hrs | 5,904 (18%) | Unnamed event |
| May 5, 2018 | <1 hr | 3,887 (12%) | Unnamed event |
| Apr 18, 2018 | 1 hrs | 3,851 (11%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Atascosa County, Texas that day.
Over the 12 years from 2014 to 2025, Atascosa County recorded 477 distinct power outage events, averaging 2.0 hours per event.
The single worst outage on record in Atascosa County started February 15, 2021 (Winter Storm Uri), lasting 76 hours and leaving up to 7,182 customers without power (21% of the county) at its peak.
June has historically been the worst month for outages in Atascosa County, with 65 events recorded during that month across the dataset.
Based on this history, Atascosa County earns a Reliability Grade of B, placing it in the 73rd percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Texas
Counties with the closest reliability grade and national percentile to Atascosa County.
| County | Grade | National percentile |
|---|---|---|
| Gaines County | B | 73rd |
| Comal County | B | 73rd |
| Wilbarger County | B | 73rd |
| Sherman County | B | 73rd |
| Brazos County | B | 73rd |
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 Atascosa County?
Between 2014 and 2025, Atascosa County recorded 477 outage events, averaging 2.0 hours each.
What is Atascosa County's reliability grade?
Atascosa County has a Reliability Grade of B, in the 73rd national percentile.
What was the worst power outage in Atascosa County?
The worst outage on record started February 15, 2021 (Winter Storm Uri), lasting 76 hours and affecting up to 7,182 customers.