Los Angeles County Power Outage History
2014–2025 · California
Average — typical outage frequency and duration nationally. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jan 8, 2025 | 261 hrs | 1,717,886 (45%) | High Wind |
| Jan 7, 2025 | 18 hrs | 331,150 (9%) | High Wind |
| Nov 8, 2025 | 8 hrs | 167,769 (4%) | Unnamed event |
| Dec 13, 2020 | 11 hrs | 133,885 (4%) | Unnamed event |
| Feb 12, 2021 | 21 hrs | 114,577 (3%) | Unnamed event |
Over the 12 years from 2014 to 2025, Los Angeles County recorded 7,454 distinct power outage events, averaging 10.8 hours per event.
The single worst outage on record in Los Angeles County started January 8, 2025 (High Wind), lasting 261 hours and leaving up to 1,717,886 customers without power (45% of the county) at its peak.
May has historically been the worst month for outages in Los Angeles County, with 832 events recorded during that month across the dataset.
Based on this history, Los Angeles County earns a Reliability Grade of C, placing it in the 42nd percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Los Angeles County's outage profile
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Similar counties in California
Counties with the closest reliability grade and national percentile to Los Angeles County.
| County | Grade | National percentile |
|---|---|---|
| Solano County | C | 44th |
| San Bernardino County | C | 41st |
| Riverside County | C | 45th |
| Yolo County | D | 40th |
| San Luis Obispo County | C | 48th |
FAQ
How often does power go out in Los Angeles County?
Between 2014 and 2025, Los Angeles County recorded 7,454 outage events, averaging 10.8 hours each.
What is Los Angeles County's reliability grade?
Los Angeles County has a Reliability Grade of C, in the 42nd national percentile.
What was the worst power outage in Los Angeles County?
The worst outage on record started January 8, 2025 (High Wind), lasting 261 hours and affecting up to 1,717,886 customers.