Duval 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 | 87 hrs | 6,017 (64%) | Winter Storm Uri |
| May 7, 2023 | 2 hrs | 2,547 (27%) | Unnamed event |
| Jun 15, 2018 | <1 hr | 2,157 (23%) | Unnamed event |
| Dec 7, 2023 | 4 hrs | 2,139 (23%) | Unnamed event |
| Jan 26, 2023 | <1 hr | 2,135 (23%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Duval County, Texas that day.
Over the 12 years from 2014 to 2025, Duval County recorded 1,097 distinct power outage events, averaging 3.8 hours per event.
The single worst outage on record in Duval County started February 15, 2021 (Winter Storm Uri), lasting 87 hours and leaving up to 6,017 customers without power (64% of the county) at its peak.
May has historically been the worst month for outages in Duval County, with 118 events recorded during that month across the dataset.
Based on this history, Duval County earns a Reliability Grade of F, placing it in the 17th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Texas
Counties with the closest reliability grade and national percentile to Duval County.
| County | Grade | National percentile |
|---|---|---|
| Van Zandt County | F | 17th |
| Anderson County | F | 17th |
| Irion County | F | 17th |
| Mason 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 Duval County?
Between 2014 and 2025, Duval County recorded 1,097 outage events, averaging 3.8 hours each.
What is Duval County's reliability grade?
Duval County has a Reliability Grade of F, in the 17th national percentile.
What was the worst power outage in Duval County?
The worst outage on record started February 15, 2021 (Winter Storm Uri), lasting 87 hours and affecting up to 6,017 customers.