Wallowa CountyPower Outage History
2015–2025 · Oregon
Worse than average — more frequent or longer outages than most counties.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| May 20, 2025 | 7 hrs | 5,599 (99%) | Unnamed event |
| Aug 19, 2024 | 2 hrs | 5,544 (98%) | Unnamed event |
| Jul 27, 2024 | <1 hr | 5,541 (98%) | Thunderstorm Wind |
| May 14, 2024 | <1 hr | 5,476 (97%) | Unnamed event |
| Oct 31, 2023 | 5 hrs | 5,466 (97%) | Unnamed event |
Over the 11 years from 2015 to 2025, Wallowa County recorded 475 distinct power outage events, averaging 3.9 hours per event.
The single worst outage on record in Wallowa County started May 20, 2025, lasting 7 hours and leaving up to 5,599 customers without power (99% of the county) at its peak.
August has historically been the worst month for outages in Wallowa County, with 66 events recorded during that month across the dataset.
Based on this history, Wallowa County earns a Reliability Grade of D, placing it in the 26th 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 Wallowa County.
| County | Grade | National percentile |
|---|---|---|
| Clatsop County | D | 25th |
| Multnomah County | D | 29th |
| Tillamook County | D | 20th |
| Lincoln County | F | 19th |
| Yamhill County | D | 32nd |
Most reliable counties in Oregon
The top 3 counties in Oregon by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Harney County | A | 94th |
| Wasco County | A | 93rd |
| Deschutes County | A | 87th |
Least reliable counties in Oregon
The bottom 3 counties in Oregon by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Clackamas County | F | 8th |
| Marion County | F | 12th |
| Lincoln County | F | 19th |
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 Wallowa County?
Between 2015 and 2025, Wallowa County recorded 475 outage events, averaging 3.9 hours each.
What is Wallowa County's reliability grade?
Wallowa County has a Reliability Grade of D, in the 26th national percentile.
What was the worst power outage in Wallowa County?
The worst outage on record started May 20, 2025, lasting 7 hours and affecting up to 5,599 customers.