Armstrong CountyPower Outage History
2014–2025 · Texas
Worse than average — more frequent or longer outages than most counties. This county's recorded history shows more frequent outages and/or longer restoration times than most US counties over the same 12-year period. If you live here, it's worth taking backup power more seriously than an average household would.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Oct 28, 2020 | 111 hrs | 1,815 (93%) | Drought |
| Jul 18, 2025 | 2 hrs | 1,126 (58%) | Unnamed event |
| Feb 16, 2021 | 2 hrs | 1,054 (54%) | Winter Storm Uri |
| Aug 7, 2025 | 6 hrs | 920 (47%) | Unnamed event |
| Jul 12, 2025 | 8 hrs | 917 (47%) | Unnamed event |
Over the 12 years from 2014 to 2025, Armstrong County recorded 158 distinct power outage events, averaging 3.1 hours per event.
The single worst outage on record in Armstrong County started October 28, 2020 (Drought), lasting 111 hours and leaving up to 1,815 customers without power (93% of the county) at its peak.
July has historically been the worst month for outages in Armstrong County, with 21 events recorded during that month across the dataset.
Based on this history, Armstrong County earns a Reliability Grade of D, placing it in the 30th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Armstrong County's outage profile
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Read our mission →Similar counties in Texas
Counties with the closest reliability grade and national percentile to Armstrong County.
| County | Grade | National percentile |
|---|---|---|
| Hall County | D | 30th |
| Val Verde County | D | 30th |
| Red River County | D | 29th |
| Glasscock County | D | 29th |
| La Salle County | D | 31st |
Most reliable counties in Texas
The top 3 counties in Texas by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Zavala County | A | 95th |
| Jasper County | A | 94th |
| Fayette County | A | 91st |
Least reliable counties in Texas
The bottom 3 counties in Texas by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Trinity County | F | 2nd |
| Orange County | F | 2nd |
| Marion County | F | 4th |
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 Armstrong County?
Between 2014 and 2025, Armstrong County recorded 158 outage events, averaging 3.1 hours each.
What is Armstrong County's reliability grade?
Armstrong County has a Reliability Grade of D, in the 30th national percentile.
What was the worst power outage in Armstrong County?
The worst outage on record started October 28, 2020 (Drought), lasting 111 hours and affecting up to 1,815 customers.