Union County Power Outage History
2017–2025 · Oregon
Better than average — fewer or shorter 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 |
|---|---|---|---|
| Aug 21, 2024 | 1 hrs | 12,706 (80%) | Unnamed event |
| Oct 28, 2025 | 1 hrs | 7,366 (47%) | Unnamed event |
| Nov 26, 2023 | 6 hrs | 5,084 (32%) | Unnamed event |
| Jan 12, 2023 | 3 hrs | 4,966 (31%) | Unnamed event |
| May 30, 2020 | 13 hrs | 4,961 (31%) | Unnamed event |
Over the 9 years from 2017 to 2025, Union County recorded 219 distinct power outage events, averaging 3.0 hours per event.
The single worst outage on record in Union County started August 21, 2024, lasting 1 hours and leaving up to 12,706 customers without power (80% of the county) at its peak.
January has historically been the worst month for outages in Union County, with 29 events recorded during that month across the dataset.
Based on this history, Union County earns a Reliability Grade of B, placing it in the 74th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Union County's outage profile
See more picks in our Best Small Power Stations (Under 1,000Wh) roundup.
Outage-prep kit
See our outage-prep guides.
Similar counties in Oregon
Counties with the closest reliability grade and national percentile to Union County.
| County | Grade | National percentile |
|---|---|---|
| Umatilla County | B | 73rd |
| Gilliam County | B | 77th |
| Grant County | B | 70th |
| Lake County | B | 68th |
| Morrow County | A | 81st |
FAQ
How often does power go out in Union County?
Between 2017 and 2025, Union County recorded 219 outage events, averaging 3.0 hours each.
What is Union County's reliability grade?
Union County has a Reliability Grade of B, in the 74th national percentile.
What was the worst power outage in Union County?
The worst outage on record started August 21, 2024, lasting 1 hours and affecting up to 12,706 customers.