Riverside 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 9, 2025 | 175 hrs | 105,557 (12%) | High Wind |
| Jan 8, 2025 | 2 hrs | 93,240 (11%) | High Wind |
| Jan 7, 2020 | 6 hrs | 69,172 (8%) | High Wind |
| Jan 8, 2025 | 4 hrs | 62,613 (7%) | High Wind |
| Jan 8, 2025 | 0 hrs | 45,990 (5%) | High Wind |
Over the 12 years from 2014 to 2025, Riverside County recorded 8,883 distinct power outage events, averaging 4.2 hours per event.
The single worst outage on record in Riverside County started January 9, 2025 (High Wind), lasting 175 hours and leaving up to 105,557 customers without power (12% of the county) at its peak.
July has historically been the worst month for outages in Riverside County, with 903 events recorded during that month across the dataset.
Based on this history, Riverside County earns a Reliability Grade of C, placing it in the 45th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Riverside County's outage profile
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Similar counties in California
Counties with the closest reliability grade and national percentile to Riverside County.
| County | Grade | National percentile |
|---|---|---|
| Solano County | C | 44th |
| Los Angeles County | C | 42nd |
| San Luis Obispo County | C | 48th |
| Santa Barbara County | C | 48th |
| San Bernardino County | C | 41st |
FAQ
How often does power go out in Riverside County?
Between 2014 and 2025, Riverside County recorded 8,883 outage events, averaging 4.2 hours each.
What is Riverside County's reliability grade?
Riverside County has a Reliability Grade of C, in the 45th national percentile.
What was the worst power outage in Riverside County?
The worst outage on record started January 9, 2025 (High Wind), lasting 175 hours and affecting up to 105,557 customers.