Zavala CountyPower Outage History
What this grade means
Top 20% most reliable nationally — infrequent, short outages. This county ranks in the most reliable fifth of all US counties in our dataset, based on 12 years of real DOE outage records: outages happen less often here, and when they do occur they tend to be resolved quickly compared to the rest of the country. Baseline outage risk is low, though a severe local storm can still occasionally cause a longer-than-usual outage regardless of the long-term track record.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jul 8, 2015 | <1 hr | 3,394 (5%) | Unnamed event |
| Jul 8, 2015 | <1 hr | 3,394 (5%) | Unnamed event |
| Feb 15, 2021 | 80 hrs | 2,560 (4%) | Winter Storm Uri |
| Jul 23, 2015 | <1 hr | 1,480 (2%) | Unnamed event |
| May 21, 2015 | 2 hrs | 1,418 (2%) | Thunderstorm Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Zavala County, Texas that day.
Over the 12 years from 2014 to 2025, Zavala County recorded 143 distinct power outage events, averaging 2.7 hours per event.
The single worst outage on record in Zavala County started July 8, 2015, lasting less than 1 hour and leaving up to 3,394 customers without power (5% of the county) at its peak.
May has historically been the worst month for outages in Zavala County, with 30 events recorded during that month across the dataset.
Based on this history, Zavala County earns a Reliability Grade of A, placing it in the 95th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Texas
Counties with the closest reliability grade and national percentile to Zavala County.
| County | Grade | National percentile |
|---|---|---|
| Jasper County | A | 94th |
| Fayette County | A | 91st |
| Coleman County | A | 90th |
| Guadalupe County | A | 89th |
| Lubbock County | A | 88th |
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 Zavala County?
Between 2014 and 2025, Zavala County recorded 143 outage events, averaging 2.7 hours each.
What is Zavala County's reliability grade?
Zavala County has a Reliability Grade of A, in the 95th national percentile.
What was the worst power outage in Zavala County?
The worst outage on record started July 8, 2015, lasting less than 1 hour and affecting up to 3,394 customers.