Washoe County Power Outage History
2015–2025 · Nevada
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 |
|---|---|---|---|
| Jan 1, 2023 | 125 hrs | 49,287 (20%) | Heavy Snow |
| Nov 10, 2015 | 53 hrs | 35,926 (14%) | Winter Weather |
| Nov 5, 2025 | 15 hrs | 32,941 (13%) | High Wind |
| Jun 6, 2025 | 162 hrs | 32,454 (13%) | Heavy Rain |
| Aug 12, 2024 | 40 hrs | 28,750 (12%) | Unnamed event |
Over the 11 years from 2015 to 2025, Washoe County recorded 2,011 distinct power outage events, averaging 3.5 hours per event.
The single worst outage on record in Washoe County started January 1, 2023 (Heavy Snow), lasting 125 hours and leaving up to 49,287 customers without power (20% of the county) at its peak.
July has historically been the worst month for outages in Washoe County, with 286 events recorded during that month across the dataset.
Based on this history, Washoe County earns a Reliability Grade of C, placing it in the 54th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Washoe County's outage profile
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Similar counties in Nevada
Counties with the closest reliability grade and national percentile to Washoe County.
| County | Grade | National percentile |
|---|---|---|
| Elko County | C | 56th |
| Lyon County | C | 58th |
| Eureka County | B | 64th |
| Churchill County | B | 71st |
| Carson City County | B | 71st |
FAQ
How often does power go out in Washoe County?
Between 2015 and 2025, Washoe County recorded 2,011 outage events, averaging 3.5 hours each.
What is Washoe County's reliability grade?
Washoe County has a Reliability Grade of C, in the 54th national percentile.
What was the worst power outage in Washoe County?
The worst outage on record started January 1, 2023 (Heavy Snow), lasting 125 hours and affecting up to 49,287 customers.