Lassen CountyPower Outage History
What this grade means
Top 20% most reliable nationally — infrequent, short outages. This county ranks in the most reliable fifth of all US counties in our dataset, based on 12 years of real DOE outage records: outages happen less often here, and when they do occur they tend to be resolved quickly compared to the rest of the country. Baseline outage risk is low, though a severe local storm can still occasionally cause a longer-than-usual outage regardless of the long-term track record.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Nov 5, 2025 | <1 hr | 767 (5%) | High Wind |
| Nov 5, 2025 | 4 hrs | 755 (5%) | High Wind |
| Aug 26, 2025 | 11 hrs | 664 (4%) | Heavy Rain |
| Nov 19, 2025 | <1 hr | 624 (4%) | Unnamed event |
| Sep 10, 2025 | 4 hrs | 497 (3%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Lassen County, California that day.
Over the 7 years from 2019 to 2025, Lassen County recorded 48 distinct power outage events, averaging 4.4 hours per event.
The single worst outage on record in Lassen County started November 5, 2025 (High Wind), lasting less than 1 hour and leaving up to 767 customers without power (5% of the county) at its peak.
July has historically been the worst month for outages in Lassen County, with 9 events recorded during that month across the dataset.
Based on this history, Lassen County earns a Reliability Grade of A, placing it in the 96th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in California
Counties with the closest reliability grade and national percentile to Lassen County.
| County | Grade | National percentile |
|---|---|---|
| Stanislaus County | A | 97th |
| San Benito County | B | 80th |
| Kings County | B | 78th |
| Modoc County | B | 75th |
| Imperial County | B | 75th |
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 Lassen County?
Between 2019 and 2025, Lassen County recorded 48 outage events, averaging 4.4 hours each.
What is Lassen County's reliability grade?
Lassen County has a Reliability Grade of A, in the 96th national percentile.
What was the worst power outage in Lassen County?
The worst outage on record started November 5, 2025 (High Wind), lasting less than 1 hour and affecting up to 767 customers.