Oklahoma CountyPower Outage History
What this grade means
(How grades are calculated)Bottom 20% least reliable nationally — frequent and/or long outages. This county ranks in the least reliable fifth of all US counties in our dataset: some combination of frequent outages, long restoration times, or customers affected puts it near the bottom nationally. Backup power is worth prioritizing here rather than treating it as optional.
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Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Oct 26, 2020 | 178 hrs | 193,316 (46%) | Ice Storm |
| Nov 2, 2020 | 78 hrs | 105,530 (25%) | Ice Storm |
| Aug 27, 2019 | 99 hrs | 80,563 (19%) | Hail |
| Feb 16, 2021 | 17 hrs | 74,442 (18%) | Winter Storm Uri |
| Nov 6, 2020 | 26 hrs | 63,883 (15%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Oklahoma County, Oklahoma that day.
Over the 12 years from 2014 to 2025, Oklahoma County recorded 2,438 distinct power outage events, averaging 3.3 hours per event.
The single worst outage on record in Oklahoma County started October 26, 2020 (Ice Storm), lasting 178 hours and leaving up to 193,316 customers without power (46% of the county) at its peak.
June has historically been the worst month for outages in Oklahoma County, with 273 events recorded during that month across the dataset.
Based on this history, Oklahoma County earns a Reliability Grade of F, placing it in the 15th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Oklahoma
Counties with the closest reliability grade and national percentile to Oklahoma County.
| County | Grade | National percentile |
|---|---|---|
| Tillman County | F | 15th |
| Kiowa County | F | 17th |
| Blaine County | F | 17th |
| Dewey County | F | 18th |
| Jefferson County | F | 18th |
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 Oklahoma County?
Between 2014 and 2025, Oklahoma County recorded 2,438 outage events, averaging 3.3 hours each.
What is Oklahoma County's reliability grade?
Oklahoma County has a Reliability Grade of F, in the 15th national percentile.
What was the worst power outage in Oklahoma County?
The worst outage on record started October 26, 2020 (Ice Storm), lasting 178 hours and affecting up to 193,316 customers.