Twin Falls County Power Outage History
2015–2025 · Idaho
Top 20% most reliable nationally — infrequent, short outages. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jan 16, 2020 | 2 hrs | 12,744 (27%) | Unnamed event |
| Apr 25, 2024 | 2 hrs | 12,570 (26%) | Unnamed event |
| May 2, 2024 | 1 hrs | 10,628 (22%) | Unnamed event |
| Mar 10, 2023 | 5 hrs | 9,203 (19%) | Unnamed event |
| Dec 10, 2025 | 1 hrs | 8,381 (18%) | Unnamed event |
Over the 11 years from 2015 to 2025, Twin Falls County recorded 474 distinct power outage events, averaging 1.8 hours per event.
The single worst outage on record in Twin Falls County started January 16, 2020, lasting 2 hours and leaving up to 12,744 customers without power (27% of the county) at its peak.
July has historically been the worst month for outages in Twin Falls County, with 52 events recorded during that month across the dataset.
Based on this history, Twin Falls County earns a Reliability Grade of A, placing it in the 82nd percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Twin Falls County's outage profile
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Similar counties in Idaho
Counties with the closest reliability grade and national percentile to Twin Falls County.
| County | Grade | National percentile |
|---|---|---|
| Franklin County | A | 82nd |
| Bannock County | A | 81st |
| Payette County | A | 85th |
| Bonneville County | A | 85th |
| Teton County | B | 78th |
FAQ
How often does power go out in Twin Falls County?
Between 2015 and 2025, Twin Falls County recorded 474 outage events, averaging 1.8 hours each.
What is Twin Falls County's reliability grade?
Twin Falls County has a Reliability Grade of A, in the 82nd national percentile.
What was the worst power outage in Twin Falls County?
The worst outage on record started January 16, 2020, lasting 2 hours and affecting up to 12,744 customers.