Grant CountyPower Outage History
2017–2025 · Oregon
Better than average — fewer or shorter outages than most counties.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Sep 7, 2024 | 3 hrs | 4,438 (87%) | Unnamed event |
| May 25, 2021 | 2 hrs | 4,406 (87%) | Unnamed event |
| Feb 14, 2022 | 1 hrs | 4,377 (86%) | Unnamed event |
| Sep 10, 2021 | 2 hrs | 4,361 (86%) | Unnamed event |
| Oct 13, 2025 | 4 hrs | 4,023 (79%) | Unnamed event |
Over the 9 years from 2017 to 2025, Grant County recorded 154 distinct power outage events, averaging 3.5 hours per event.
The single worst outage on record in Grant County started September 7, 2024, lasting 3 hours and leaving up to 4,438 customers without power (87% of the county) at its peak.
November has historically been the worst month for outages in Grant County, with 22 events recorded during that month across the dataset.
Based on this history, Grant County earns a Reliability Grade of B, placing it in the 70th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Grant 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 Grant County.
| County | Grade | National percentile |
|---|---|---|
| Lake County | B | 68th |
| Umatilla County | B | 73rd |
| Union County | B | 74th |
| Benton County | B | 64th |
| Crook County | B | 63rd |
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 Grant County?
Between 2017 and 2025, Grant County recorded 154 outage events, averaging 3.5 hours each.
What is Grant County's reliability grade?
Grant County has a Reliability Grade of B, in the 70th national percentile.
What was the worst power outage in Grant County?
The worst outage on record started September 7, 2024, lasting 3 hours and affecting up to 4,438 customers.