Grady County Power Outage History
2014–2025 · Oklahoma
Worse than average — more frequent or longer outages than most counties. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Dec 27, 2015 | 81 hrs | 18,145 (48%) | Ice Storm |
| Oct 26, 2020 | 159 hrs | 17,833 (47%) | Ice Storm |
| Nov 28, 2015 | 242 hrs | 16,091 (42%) | Ice Storm |
| Oct 11, 2021 | 37 hrs | 10,204 (27%) | Thunderstorm Wind |
| Apr 11, 2016 | 13 hrs | 8,074 (21%) | Thunderstorm Wind |
Over the 12 years from 2014 to 2025, Grady County recorded 757 distinct power outage events, averaging 2.5 hours per event.
The single worst outage on record in Grady County started December 27, 2015 (Ice Storm), lasting 81 hours and leaving up to 18,145 customers without power (48% of the county) at its peak.
May has historically been the worst month for outages in Grady County, with 114 events recorded during that month across the dataset.
Based on this history, Grady County earns a Reliability Grade of D, placing it in the 26th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Grady County's outage profile
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Similar counties in Oklahoma
Counties with the closest reliability grade and national percentile to Grady County.
| County | Grade | National percentile |
|---|---|---|
| Ellis County | D | 25th |
| Roger Mills County | D | 25th |
| Canadian County | D | 24th |
| Lincoln County | D | 24th |
| Grant County | D | 28th |
FAQ
How often does power go out in Grady County?
Between 2014 and 2025, Grady County recorded 757 outage events, averaging 2.5 hours each.
What is Grady County's reliability grade?
Grady County has a Reliability Grade of D, in the 26th national percentile.
What was the worst power outage in Grady County?
The worst outage on record started December 27, 2015 (Ice Storm), lasting 81 hours and affecting up to 18,145 customers.