Shasta CountyPower Outage History
What this grade means
Bottom 20% least reliable nationally — frequent and/or long outages. This county ranks in the least reliable fifth of all US counties in our dataset: some combination of frequent outages, long restoration times, or customers affected puts it near the bottom nationally. Backup power is worth prioritizing here rather than treating it as optional.
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 |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Shasta County, California that day.
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).
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 |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
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.