Jefferson 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 |
|---|---|---|---|
| Apr 1, 2025 | 1 hrs | 10,920 (67%) | Unnamed event |
| Dec 11, 2022 | 29 hrs | 8,569 (53%) | Heavy Snow |
| Aug 13, 2018 | 0 hrs | 5,145 (32%) | Unnamed event |
| May 30, 2020 | 64 hrs | 4,761 (29%) | Thunderstorm Wind |
| Nov 13, 2020 | 5 hrs | 4,223 (26%) | Winter Storm |
Over the 9 years from 2017 to 2025, Jefferson County recorded 307 distinct power outage events, averaging 3.6 hours per event.
The single worst outage on record in Jefferson County started April 1, 2025, lasting 1 hours and leaving up to 10,920 customers without power (67% of the county) at its peak.
August has historically been the worst month for outages in Jefferson County, with 61 events recorded during that month across the dataset.
Based on this history, Jefferson County earns a Reliability Grade of C, placing it in the 53rd 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 Jefferson County.
| County | Grade | National percentile |
|---|---|---|
| Washington County | C | 53rd |
| Lane County | C | 53rd |
| Jackson County | C | 52nd |
| Coos County | C | 55th |
| Sherman County | C | 56th |
FAQ
How often does power go out in Jefferson County?
Between 2017 and 2025, Jefferson County recorded 307 outage events, averaging 3.6 hours each.
What is Jefferson County's reliability grade?
Jefferson County has a Reliability Grade of C, in the 53rd national percentile.
What was the worst power outage in Jefferson County?
The worst outage on record started April 1, 2025, lasting 1 hours and affecting up to 10,920 customers.