Shoshone County Power Outage History
2014–2025 · Idaho
Worse than average — more frequent or longer 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 |
|---|---|---|---|
| Nov 18, 2015 | 7 hrs | 19,035 (99%) | High Wind |
| Nov 18, 2015 | 1 hrs | 17,392 (91%) | High Wind |
| Nov 18, 2015 | 2 hrs | 17,312 (90%) | High Wind |
| Nov 18, 2015 | 2 hrs | 14,302 (75%) | High Wind |
| Nov 18, 2015 | 1 hrs | 10,302 (54%) | High Wind |
Over the 12 years from 2014 to 2025, Shoshone County recorded 589 distinct power outage events, averaging 3.7 hours per event.
The single worst outage on record in Shoshone County started November 18, 2015 (High Wind), lasting 7 hours and leaving up to 19,035 customers without power (99% of the county) at its peak.
December has historically been the worst month for outages in Shoshone County, with 89 events recorded during that month across the dataset.
Based on this history, Shoshone County earns a Reliability Grade of D, placing it in the 21st 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 Shoshone County.
| County | Grade | National percentile |
|---|---|---|
| Power County | D | 22nd |
| Idaho County | F | 17th |
| Boundary County | F | 17th |
| Benewah County | F | 17th |
| Adams County | D | 27th |
FAQ
How often does power go out in Shoshone County?
Between 2014 and 2025, Shoshone County recorded 589 outage events, averaging 3.7 hours each.
What is Shoshone County's reliability grade?
Shoshone County has a Reliability Grade of D, in the 21st national percentile.
What was the worst power outage in Shoshone County?
The worst outage on record started November 18, 2015 (High Wind), lasting 7 hours and affecting up to 19,035 customers.