Lemhi County Power Outage History
2015–2025 · Idaho
Average — typical outage frequency and duration nationally. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| May 12, 2020 | 1 hrs | 7,279 (95%) | Unnamed event |
| Aug 5, 2020 | 5 hrs | 6,839 (89%) | Unnamed event |
| Sep 13, 2019 | 1 hrs | 5,865 (76%) | Unnamed event |
| Jan 2, 2019 | 0 hrs | 5,817 (76%) | Unnamed event |
| Oct 2, 2016 | 1 hrs | 5,705 (74%) | Unnamed event |
Over the 11 years from 2015 to 2025, Lemhi County recorded 461 distinct power outage events, averaging 1.9 hours per event.
The single worst outage on record in Lemhi County started May 12, 2020, lasting 1 hours and leaving up to 7,279 customers without power (95% of the county) at its peak.
August has historically been the worst month for outages in Lemhi County, with 76 events recorded during that month across the dataset.
Based on this history, Lemhi County earns a Reliability Grade of C, placing it in the 43rd percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Lemhi County's outage profile
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Similar counties in Idaho
Counties with the closest reliability grade and national percentile to Lemhi County.
| County | Grade | National percentile |
|---|---|---|
| Gooding County | C | 43rd |
| Clark County | D | 39th |
| Blaine County | D | 39th |
| Bear Lake County | C | 49th |
| Latah County | D | 34th |
FAQ
How often does power go out in Lemhi County?
Between 2015 and 2025, Lemhi County recorded 461 outage events, averaging 1.9 hours each.
What is Lemhi County's reliability grade?
Lemhi County has a Reliability Grade of C, in the 43rd national percentile.
What was the worst power outage in Lemhi County?
The worst outage on record started May 12, 2020, lasting 1 hours and affecting up to 7,279 customers.