Grant CountyPower Outage History
2015–2025 · Oklahoma
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 |
|---|---|---|---|
| Jun 7, 2025 | 38 hrs | 1,643 (70%) | Thunderstorm Wind |
| Jul 29, 2016 | 5 hrs | 1,397 (59%) | Unnamed event |
| Apr 18, 2019 | 6 hrs | 891 (38%) | Thunderstorm Wind |
| Sep 25, 2016 | 2 hrs | 775 (33%) | Unnamed event |
| Sep 26, 2016 | 5 hrs | 775 (33%) | Unnamed event |
Over the 11 years from 2015 to 2025, Grant County recorded 363 distinct power outage events, averaging 2.9 hours per event.
The single worst outage on record in Grant County started June 7, 2025 (Thunderstorm Wind), lasting 38 hours and leaving up to 1,643 customers without power (70% of the county) at its peak.
June has historically been the worst month for outages in Grant County, with 57 events recorded during that month across the dataset.
Based on this history, Grant County earns a Reliability Grade of D, placing it in the 28th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Grant County's outage profile
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Read our mission →Similar counties in Oklahoma
Counties with the closest reliability grade and national percentile to Grant County.
| County | Grade | National percentile |
|---|---|---|
| Noble County | D | 29th |
| Pushmataha County | D | 29th |
| Grady County | D | 26th |
| Johnston County | D | 30th |
| Ellis County | D | 25th |
Most reliable counties in Oklahoma
The top 3 counties in Oklahoma by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Texas County | A | 96th |
| Kay County | A | 95th |
| Greer County | A | 89th |
Least reliable counties in Oklahoma
The bottom 3 counties in Oklahoma by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Caddo County | F | 4th |
| Washita County | F | 10th |
| Oklahoma County | F | 15th |
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 Grant County?
Between 2015 and 2025, Grant County recorded 363 outage events, averaging 2.9 hours each.
What is Grant County's reliability grade?
Grant County has a Reliability Grade of D, in the 28th national percentile.
What was the worst power outage in Grant County?
The worst outage on record started June 7, 2025 (Thunderstorm Wind), lasting 38 hours and affecting up to 1,643 customers.