Cleveland CountyPower Outage History
What this grade means
Better than average — fewer or shorter outages than most counties. This county's outage history is better than the national median: recorded outages are less frequent and/or shorter in duration than a typical US county experienced over the same 12-year period. It isn't in the top tier nationally, but its track record points to lower-than-average outage risk.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Oct 26, 2020 | 172 hrs | 33,745 (16%) | Ice Storm |
| Jul 12, 2020 | 64 hrs | 26,619 (13%) | Thunderstorm Wind |
| Feb 16, 2021 | 9 hrs | 23,808 (12%) | Winter Storm Uri |
| Nov 16, 2025 | 5 hrs | 21,760 (11%) | Drought |
| May 7, 2024 | 20 hrs | 17,814 (9%) | Thunderstorm Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Cleveland County, Oklahoma that day.
Over the 12 years from 2014 to 2025, Cleveland County recorded 808 distinct power outage events, averaging 3.0 hours per event.
The single worst outage on record in Cleveland County started October 26, 2020 (Ice Storm), lasting 172 hours and leaving up to 33,745 customers without power (16% of the county) at its peak.
June has historically been the worst month for outages in Cleveland County, with 109 events recorded during that month across the dataset.
Based on this history, Cleveland County earns a Reliability Grade of B, placing it in the 67th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Oklahoma
Counties with the closest reliability grade and national percentile to Cleveland County.
| County | Grade | National percentile |
|---|---|---|
| Beaver County | B | 67th |
| Washington County | B | 67th |
| Cimarron County | B | 66th |
| Stephens County | B | 69th |
| Woodward County | B | 64th |
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 Cleveland County?
Between 2014 and 2025, Cleveland County recorded 808 outage events, averaging 3.0 hours each.
What is Cleveland County's reliability grade?
Cleveland County has a Reliability Grade of B, in the 67th national percentile.
What was the worst power outage in Cleveland County?
The worst outage on record started October 26, 2020 (Ice Storm), lasting 172 hours and affecting up to 33,745 customers.