Tarrant CountyPower Outage History
What this grade means
Average — typical outage frequency and duration nationally. This county sits in the middle of the national distribution — its outage frequency and duration over the past 12 years are close to the nationwide median, neither notably better nor worse than most other US counties. A typical amount of backup-power preparedness is reasonable here.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Feb 14, 2021 | 96 hrs | 367,316 (31%) | Winter Storm Uri |
| Mar 2, 2023 | 59 hrs | 107,175 (9%) | Hail |
| Sep 9, 2023 | 50 hrs | 101,641 (8%) | Drought |
| Jun 16, 2019 | 51 hrs | 73,079 (6%) | Thunderstorm Wind |
| Apr 19, 2015 | 51 hrs | 67,373 (6%) | Drought |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Tarrant County, Texas that day.
Over the 12 years from 2014 to 2025, Tarrant County recorded 7,936 distinct power outage events, averaging 2.4 hours per event.
The single worst outage on record in Tarrant County started February 14, 2021 (Winter Storm Uri), lasting 96 hours and leaving up to 367,316 customers without power (31% of the county) at its peak.
July has historically been the worst month for outages in Tarrant County, with 810 events recorded during that month across the dataset.
Based on this history, Tarrant County earns a Reliability Grade of C, placing it in the 54th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Texas
Counties with the closest reliability grade and national percentile to Tarrant County.
| County | Grade | National percentile |
|---|---|---|
| Crosby County | C | 54th |
| Grayson County | C | 54th |
| Kent County | C | 53rd |
| Williamson County | C | 53rd |
| Shackelford County | C | 53rd |
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 Tarrant County?
Between 2014 and 2025, Tarrant County recorded 7,936 outage events, averaging 2.4 hours each.
What is Tarrant County's reliability grade?
Tarrant County has a Reliability Grade of C, in the 54th national percentile.
What was the worst power outage in Tarrant County?
The worst outage on record started February 14, 2021 (Winter Storm Uri), lasting 96 hours and affecting up to 367,316 customers.