Boundary CountyPower Outage History
2017–2025 · Idaho
Bottom 20% least reliable nationally — frequent and/or long outages.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Sep 26, 2024 | 54 hrs | 4,041 (86%) | Thunderstorm Wind |
| Sep 7, 2020 | 83 hrs | 3,517 (75%) | Strong Wind |
| Mar 14, 2020 | 37 hrs | 3,490 (74%) | High Wind |
| Dec 6, 2020 | 12 hrs | 3,243 (69%) | Unnamed event |
| Apr 18, 2021 | 13 hrs | 3,203 (68%) | Strong Wind |
Over the 9 years from 2017 to 2025, Boundary County recorded 409 distinct power outage events, averaging 3.7 hours per event.
The single worst outage on record in Boundary County started September 26, 2024 (Thunderstorm Wind), lasting 54 hours and leaving up to 4,041 customers without power (86% of the county) at its peak.
July has historically been the worst month for outages in Boundary County, with 46 events recorded during that month across the dataset.
Based on this history, Boundary County earns a Reliability Grade of F, placing it in the 17th percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Idaho
Counties with the closest reliability grade and national percentile to Boundary County.
| County | Grade | National percentile |
|---|---|---|
| Benewah County | F | 17th |
| Idaho County | F | 17th |
| Boise County | F | 14th |
| Shoshone County | D | 21st |
| Power County | D | 22nd |
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 Boundary County?
Between 2017 and 2025, Boundary County recorded 409 outage events, averaging 3.7 hours each.
What is Boundary County's reliability grade?
Boundary County has a Reliability Grade of F, in the 17th national percentile.
What was the worst power outage in Boundary County?
The worst outage on record started September 26, 2024 (Thunderstorm Wind), lasting 54 hours and affecting up to 4,041 customers.