Shasta 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 |
|---|---|---|---|
| Feb 13, 2019 | 32 hrs | 38,021 (43%) | Heavy Snow |
| Oct 27, 2019 | 5 hrs | 33,893 (39%) | High Wind |
| Oct 27, 2019 | 4 hrs | 33,885 (39%) | High Wind |
| Oct 27, 2019 | 2 hrs | 33,862 (39%) | High Wind |
| Oct 27, 2019 | 2 hrs | 33,862 (39%) | High Wind |
Over the 8 years from 2018 to 2025, Shasta County recorded 1,012 distinct power outage events, averaging 5.2 hours per event.
The single worst outage on record in Shasta County started February 13, 2019 (Heavy Snow), lasting 32 hours and leaving up to 38,021 customers without power (43% of the county) at its peak.
October has historically been the worst month for outages in Shasta County, with 165 events recorded during that month across the dataset.
Based on this history, Shasta County earns a Reliability Grade of F, placing it in the 9th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Shasta County's outage profile
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Similar counties in California
Counties with the closest reliability grade and national percentile to Shasta County.
| County | Grade | National percentile |
|---|---|---|
| Napa County | F | 7th |
| Tehama County | F | 7th |
| Santa Cruz County | F | 6th |
| Del Norte County | F | 6th |
| Humboldt County | F | 5th |
FAQ
How often does power go out in Shasta County?
Between 2018 and 2025, Shasta County recorded 1,012 outage events, averaging 5.2 hours each.
What is Shasta County's reliability grade?
Shasta County has a Reliability Grade of F, in the 9th national percentile.
What was the worst power outage in Shasta County?
The worst outage on record started February 13, 2019 (Heavy Snow), lasting 32 hours and affecting up to 38,021 customers.