Custer 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 |
|---|---|---|---|
| Oct 26, 2020 | 85 hrs | 15,245 (61%) | Drought |
| Dec 27, 2015 | 74 hrs | 11,377 (45%) | Ice Storm |
| Apr 3, 2018 | 2 hrs | 11,114 (44%) | Drought |
| Feb 21, 2018 | 3 hrs | 10,229 (41%) | Drought |
| Mar 29, 2017 | 13 hrs | 10,211 (41%) | Unnamed event |
Over the 12 years from 2014 to 2025, Custer County recorded 738 distinct power outage events, averaging 2.2 hours per event.
The single worst outage on record in Custer County started October 26, 2020 (Drought), lasting 85 hours and leaving up to 15,245 customers without power (61% of the county) at its peak.
June has historically been the worst month for outages in Custer County, with 96 events recorded during that month across the dataset.
Based on this history, Custer County earns a Reliability Grade of D, placing it in the 31st percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Oklahoma
Counties with the closest reliability grade and national percentile to Custer County.
| County | Grade | National percentile |
|---|---|---|
| Love County | D | 32nd |
| Johnston County | D | 30th |
| McCurtain County | D | 33rd |
| Delaware County | D | 33rd |
| Pushmataha County | D | 29th |
FAQ
How often does power go out in Custer County?
Between 2014 and 2025, Custer County recorded 738 outage events, averaging 2.2 hours each.
What is Custer County's reliability grade?
Custer County has a Reliability Grade of D, in the 31st national percentile.
What was the worst power outage in Custer County?
The worst outage on record started October 26, 2020 (Drought), lasting 85 hours and affecting up to 15,245 customers.