Tom Green 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 | 98 hrs | 28,680 (35%) | Winter Storm Uri |
| May 18, 2019 | 25 hrs | 28,115 (35%) | Tornado |
| May 5, 2025 | 4 hrs | 23,588 (29%) | Drought |
| Aug 15, 2021 | 9 hrs | 21,676 (27%) | Flash Flood |
| Aug 22, 2020 | 40 hrs | 20,760 (26%) | Thunderstorm Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Tom Green County, Texas that day.
Over the 12 years from 2014 to 2025, Tom Green County recorded 628 distinct power outage events, averaging 2.0 hours per event.
The single worst outage on record in Tom Green County started February 14, 2021 (Winter Storm Uri), lasting 98 hours and leaving up to 28,680 customers without power (35% of the county) at its peak.
May has historically been the worst month for outages in Tom Green County, with 79 events recorded during that month across the dataset.
Based on this history, Tom Green County earns a Reliability Grade of C, placing it in the 56th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Texas
Counties with the closest reliability grade and national percentile to Tom Green County.
| County | Grade | National percentile |
|---|---|---|
| Floyd County | C | 56th |
| Garza County | C | 56th |
| Brown County | C | 56th |
| Hunt County | C | 57th |
| Runnels County | C | 57th |
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 Tom Green County?
Between 2014 and 2025, Tom Green County recorded 628 outage events, averaging 2.0 hours each.
What is Tom Green County's reliability grade?
Tom Green County has a Reliability Grade of C, in the 56th national percentile.
What was the worst power outage in Tom Green County?
The worst outage on record started February 14, 2021 (Winter Storm Uri), lasting 98 hours and affecting up to 28,680 customers.