Washington CountyPower Outage History
2015–2025 · Idaho
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 |
|---|---|---|---|
| Dec 22, 2024 | <1 hr | 2,721 (66%) | Unnamed event |
| Dec 6, 2024 | 2 hrs | 2,517 (61%) | Unnamed event |
| Jan 9, 2025 | <1 hr | 2,516 (61%) | Unnamed event |
| Dec 18, 2023 | 2 hrs | 1,493 (36%) | Unnamed event |
| Mar 10, 2023 | 11 hrs | 1,445 (35%) | Unnamed event |
Over the 11 years from 2015 to 2025, Washington County recorded 309 distinct power outage events, averaging 2.2 hours per event.
The single worst outage on record in Washington County started December 22, 2024, lasting less than 1 hour and leaving up to 2,721 customers without power (66% of the county) at its peak.
August has historically been the worst month for outages in Washington County, with 43 events recorded during that month across the dataset.
Based on this history, Washington County earns a Reliability Grade of B, placing it in the 68th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Washington County's outage profile
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Outage-prep kit
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Similar counties in Idaho
Counties with the closest reliability grade and national percentile to Washington County.
| County | Grade | National percentile |
|---|---|---|
| Gem County | B | 72nd |
| Madison County | B | 72nd |
| Jefferson County | B | 64th |
| Lincoln County | B | 63rd |
| Lewis County | B | 73rd |
Most reliable counties in Idaho
The top 3 counties in Idaho by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Minidoka County | A | 95th |
| Camas County | A | 92nd |
| Ada County | A | 92nd |
Least reliable counties in Idaho
The bottom 3 counties in Idaho by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Clearwater County | F | 3rd |
| Bonner County | F | 10th |
| Boise County | F | 14th |
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 Washington County?
Between 2015 and 2025, Washington County recorded 309 outage events, averaging 2.2 hours each.
What is Washington County's reliability grade?
Washington County has a Reliability Grade of B, in the 68th national percentile.
What was the worst power outage in Washington County?
The worst outage on record started December 22, 2024, lasting less than 1 hour and affecting up to 2,721 customers.