San Luis Obispo County Power Outage History
2018–2025 · 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 |
|---|---|---|---|
| Feb 4, 2024 | 57 hrs | 31,018 (25%) | Unnamed event |
| Dec 11, 2022 | 43 hrs | 29,494 (23%) | High Wind |
| Jul 17, 2024 | 2 hrs | 28,154 (22%) | Unnamed event |
| Jan 9, 2023 | 6 hrs | 21,675 (17%) | High Wind |
| Nov 12, 2019 | 1 hrs | 19,404 (15%) | Unnamed event |
Over the 8 years from 2018 to 2025, San Luis Obispo County recorded 1,830 distinct power outage events, averaging 3.0 hours per event.
The single worst outage on record in San Luis Obispo County started February 4, 2024, lasting 57 hours and leaving up to 31,018 customers without power (25% of the county) at its peak.
August has historically been the worst month for outages in San Luis Obispo County, with 210 events recorded during that month across the dataset.
Based on this history, San Luis Obispo County earns a Reliability Grade of C, placing it in the 48th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for San Luis Obispo County's outage profile
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Similar counties in California
Counties with the closest reliability grade and national percentile to San Luis Obispo County.
| County | Grade | National percentile |
|---|---|---|
| Santa Barbara County | C | 48th |
| Riverside County | C | 45th |
| Solano County | C | 44th |
| Los Angeles County | C | 42nd |
| San Bernardino County | C | 41st |
FAQ
How often does power go out in San Luis Obispo County?
Between 2018 and 2025, San Luis Obispo County recorded 1,830 outage events, averaging 3.0 hours each.
What is San Luis Obispo County's reliability grade?
San Luis Obispo County has a Reliability Grade of C, in the 48th national percentile.
What was the worst power outage in San Luis Obispo County?
The worst outage on record started February 4, 2024, lasting 57 hours and affecting up to 31,018 customers.