Oldham CountyPower Outage History
2015–2025 · Texas
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 |
|---|---|---|---|
| Oct 11, 2023 | <1 hr | 3,666 (95%) | Drought |
| Aug 10, 2020 | 1 hrs | 1,176 (30%) | Unnamed event |
| Apr 30, 2017 | 11 hrs | 1,165 (30%) | Unnamed event |
| Aug 8, 2016 | 1 hrs | 1,152 (30%) | Wildfire |
| Oct 29, 2020 | 38 hrs | 1,093 (28%) | Drought |
Over the 11 years from 2015 to 2025, Oldham County recorded 379 distinct power outage events, averaging 2.9 hours per event.
The single worst outage on record in Oldham County started October 11, 2023 (Drought), lasting less than 1 hour and leaving up to 3,666 customers without power (95% of the county) at its peak.
June has historically been the worst month for outages in Oldham County, with 55 events recorded during that month across the dataset.
Based on this history, Oldham County earns a Reliability Grade of C, placing it in the 59th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Oldham 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 Oldham County.
| County | Grade | National percentile |
|---|---|---|
| Rockwall County | C | 59th |
| Potter County | C | 59th |
| Hartley County | C | 60th |
| Bowie County | B | 60th |
| Wise County | B | 60th |
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 Oldham County?
Between 2015 and 2025, Oldham County recorded 379 outage events, averaging 2.9 hours each.
What is Oldham County's reliability grade?
Oldham County has a Reliability Grade of C, in the 59th national percentile.
What was the worst power outage in Oldham County?
The worst outage on record started October 11, 2023 (Drought), lasting less than 1 hour and affecting up to 3,666 customers.