PowerOutageHistory
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Lassen County Power Outage History

2019–2025 · California

Top 20% most reliable nationally — infrequent, short outages. How grades are calculated

Total events
48
Avg duration
4.4 hrs
Longest outage
18 hrs
National percentile
96th

Outages by year

Outages by month (seasonality)

Worst outage events on record

DateDurationCustomers affectedCause
Nov 5, 20251 hrs767 (5%)High Wind
Nov 5, 20254 hrs755 (5%)High Wind
Aug 26, 202511 hrs664 (4%)Unnamed event
Nov 19, 20251 hrs624 (4%)Unnamed event
Sep 10, 20254 hrs497 (3%)Unnamed event

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 1 hours 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).

Sized for Lassen County's outage profile

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Similar counties in California

Counties with the closest reliability grade and national percentile to Lassen County.

CountyGradeNational percentile
Stanislaus CountyA97th
San Benito CountyB80th
Kings CountyB78th
Modoc CountyB75th
Imperial CountyB75th

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 1 hours and affecting up to 767 customers.

Data: ORNL EAGLE-I Recorded Electricity Outages (2014–2025), CC BY 4.0. Storm names: NOAA Storm Events Database. Last data refresh: 2025. See methodology.