Zapata 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 |
|---|---|---|---|
| Feb 15, 2021 | 79 hrs | 6,300 (79%) | Winter Storm Uri |
| Nov 11, 2020 | <1 hr | 5,796 (72%) | Unnamed event |
| Feb 18, 2021 | 38 hrs | 3,963 (49%) | Winter Storm Uri |
| May 26, 2020 | 43 hrs | 3,885 (48%) | Thunderstorm Wind |
| Aug 3, 2021 | 11 hrs | 3,333 (42%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Zapata County, Texas that day.
Over the 12 years from 2014 to 2025, Zapata County recorded 373 distinct power outage events, averaging 3.4 hours per event.
The single worst outage on record in Zapata County started February 15, 2021 (Winter Storm Uri), lasting 79 hours and leaving up to 6,300 customers without power (79% of the county) at its peak.
May has historically been the worst month for outages in Zapata County, with 70 events recorded during that month across the dataset.
Based on this history, Zapata County earns a Reliability Grade of F, placing it in the 18th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Texas
Counties with the closest reliability grade and national percentile to Zapata County.
| County | Grade | National percentile |
|---|---|---|
| Reagan County | F | 18th |
| Brazoria County | F | 18th |
| Loving County | F | 19th |
| Roberts County | F | 18th |
| Medina County | F | 18th |
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 Zapata County?
Between 2014 and 2025, Zapata County recorded 373 outage events, averaging 3.4 hours each.
What is Zapata County's reliability grade?
Zapata County has a Reliability Grade of F, in the 18th national percentile.
What was the worst power outage in Zapata County?
The worst outage on record started February 15, 2021 (Winter Storm Uri), lasting 79 hours and affecting up to 6,300 customers.