Siskiyou County Power Outage History
2017–2025 · 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 |
|---|---|---|---|
| Aug 7, 2017 | 1 hrs | 20,213 (76%) | Wildfire |
| Aug 25, 2025 | 4 hrs | 19,359 (73%) | Unnamed event |
| Jul 3, 2022 | 1 hrs | 16,877 (63%) | Unnamed event |
| Aug 10, 2019 | 3 hrs | 15,774 (59%) | Wildfire |
| Jun 25, 2025 | 2 hrs | 13,380 (50%) | Unnamed event |
Over the 9 years from 2017 to 2025, Siskiyou County recorded 838 distinct power outage events, averaging 4.2 hours per event.
The single worst outage on record in Siskiyou County started August 7, 2017 (Wildfire), lasting 1 hours and leaving up to 20,213 customers without power (76% of the county) at its peak.
July has historically been the worst month for outages in Siskiyou County, with 121 events recorded during that month across the dataset.
Based on this history, Siskiyou County earns a Reliability Grade of F, placing it in the 20th 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 Siskiyou County.
| County | Grade | National percentile |
|---|---|---|
| Mono County | F | 19th |
| Inyo County | F | 16th |
| Marin County | F | 16th |
| Yuba County | F | 15th |
| Sonoma County | F | 13th |
FAQ
How often does power go out in Siskiyou County?
Between 2017 and 2025, Siskiyou County recorded 838 outage events, averaging 4.2 hours each.
What is Siskiyou County's reliability grade?
Siskiyou County has a Reliability Grade of F, in the 20th national percentile.
What was the worst power outage in Siskiyou County?
The worst outage on record started August 7, 2017 (Wildfire), lasting 1 hours and affecting up to 20,213 customers.