Coos County Power Outage History
2017–2025 · Oregon
Average — typical outage frequency and duration nationally. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jan 20, 2018 | 0 hrs | 22,393 (55%) | High Surf |
| Oct 5, 2024 | 13 hrs | 14,457 (36%) | Wildfire |
| Jan 3, 2022 | 68 hrs | 14,226 (35%) | Frost/Freeze |
| Sep 9, 2025 | 1 hrs | 11,306 (28%) | Unnamed event |
| Mar 16, 2025 | 2 hrs | 11,291 (28%) | Flood |
Over the 9 years from 2017 to 2025, Coos County recorded 412 distinct power outage events, averaging 3.1 hours per event.
The single worst outage on record in Coos County started January 20, 2018 (High Surf), lasting 0 hours and leaving up to 22,393 customers without power (55% of the county) at its peak.
November has historically been the worst month for outages in Coos County, with 53 events recorded during that month across the dataset.
Based on this history, Coos County earns a Reliability Grade of C, placing it in the 55th percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Oregon
Counties with the closest reliability grade and national percentile to Coos County.
| County | Grade | National percentile |
|---|---|---|
| Lane County | C | 53rd |
| Sherman County | C | 56th |
| Jefferson County | C | 53rd |
| Washington County | C | 53rd |
| Jackson County | C | 52nd |
FAQ
How often does power go out in Coos County?
Between 2017 and 2025, Coos County recorded 412 outage events, averaging 3.1 hours each.
What is Coos County's reliability grade?
Coos County has a Reliability Grade of C, in the 55th national percentile.
What was the worst power outage in Coos County?
The worst outage on record started January 20, 2018 (High Surf), lasting 0 hours and affecting up to 22,393 customers.