Greer CountyPower Outage History
2014–2025 · Oklahoma
Top 20% most reliable nationally — infrequent, short outages.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| May 21, 2019 | 37 hrs | 341 (9%) | Tornado |
| Oct 28, 2020 | 37 hrs | 267 (7%) | Drought |
| Apr 7, 2015 | 1 hrs | 238 (6%) | Drought |
| Dec 27, 2015 | 47 hrs | 238 (6%) | Ice Storm |
| May 9, 2018 | 4 hrs | 223 (6%) | Drought |
Over the 12 years from 2014 to 2025, Greer County recorded 172 distinct power outage events, averaging 2.7 hours per event.
The single worst outage on record in Greer County started May 21, 2019 (Tornado), lasting 37 hours and leaving up to 341 customers without power (9% of the county) at its peak.
July has historically been the worst month for outages in Greer County, with 21 events recorded during that month across the dataset.
Based on this history, Greer County earns a Reliability Grade of A, placing it in the 89th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Greer County's outage profile
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Outage-prep kit
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Similar counties in Oklahoma
Counties with the closest reliability grade and national percentile to Greer County.
| County | Grade | National percentile |
|---|---|---|
| Adair County | A | 89th |
| Kay County | A | 95th |
| Cherokee County | A | 83rd |
| Texas County | A | 96th |
| Jackson County | A | 82nd |
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 Greer County?
Between 2014 and 2025, Greer County recorded 172 outage events, averaging 2.7 hours each.
What is Greer County's reliability grade?
Greer County has a Reliability Grade of A, in the 89th national percentile.
What was the worst power outage in Greer County?
The worst outage on record started May 21, 2019 (Tornado), lasting 37 hours and affecting up to 341 customers.