Nevada County Power Outage History
2018–2025 · California
Bottom 20% least reliable nationally — frequent and/or long outages. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Oct 29, 2019 | 8 hrs | 53,330 (77%) | Wildfire |
| Oct 29, 2019 | 3 hrs | 53,330 (77%) | Wildfire |
| Oct 30, 2019 | 3 hrs | 53,328 (77%) | Wildfire |
| Oct 30, 2019 | 4 hrs | 53,328 (77%) | Wildfire |
| Oct 30, 2019 | 2 hrs | 53,328 (77%) | Wildfire |
Over the 8 years from 2018 to 2025, Nevada County recorded 1,137 distinct power outage events, averaging 4.0 hours per event.
The single worst outage on record in Nevada County started October 29, 2019 (Wildfire), lasting 8 hours and leaving up to 53,330 customers without power (77% of the county) at its peak.
October has historically been the worst month for outages in Nevada County, with 198 events recorded during that month across the dataset.
Based on this history, Nevada County earns a Reliability Grade of F, placing it in the 2nd percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in California
Counties with the closest reliability grade and national percentile to Nevada County.
| County | Grade | National percentile |
|---|---|---|
| Lake County | F | 2nd |
| Alpine County | F | 2nd |
| El Dorado County | F | 2nd |
| Butte County | F | 1st |
| Tuolumne County | F | 1st |
FAQ
How often does power go out in Nevada County?
Between 2018 and 2025, Nevada County recorded 1,137 outage events, averaging 4.0 hours each.
What is Nevada County's reliability grade?
Nevada County has a Reliability Grade of F, in the 2nd national percentile.
What was the worst power outage in Nevada County?
The worst outage on record started October 29, 2019 (Wildfire), lasting 8 hours and affecting up to 53,330 customers.