Solano 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 |
|---|---|---|---|
| Oct 27, 2019 | 4 hrs | 50,374 (27%) | High Wind |
| Oct 27, 2019 | 5 hrs | 45,781 (24%) | High Wind |
| Oct 27, 2019 | 3 hrs | 44,400 (24%) | High Wind |
| Oct 28, 2019 | 4 hrs | 44,258 (24%) | High Wind |
| Oct 28, 2019 | 2 hrs | 41,012 (22%) | High Wind |
Over the 8 years from 2018 to 2025, Solano County recorded 1,910 distinct power outage events, averaging 3.0 hours per event.
The single worst outage on record in Solano County started October 27, 2019 (High Wind), lasting 4 hours and leaving up to 50,374 customers without power (27% of the county) at its peak.
October has historically been the worst month for outages in Solano County, with 238 events recorded during that month across the dataset.
Based on this history, Solano County earns a Reliability Grade of C, placing it in the 44th percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in California
Counties with the closest reliability grade and national percentile to Solano County.
| County | Grade | National percentile |
|---|---|---|
| Riverside County | C | 45th |
| Los Angeles County | C | 42nd |
| San Bernardino County | C | 41st |
| San Luis Obispo County | C | 48th |
| Santa Barbara County | C | 48th |
FAQ
How often does power go out in Solano County?
Between 2018 and 2025, Solano County recorded 1,910 outage events, averaging 3.0 hours each.
What is Solano County's reliability grade?
Solano County has a Reliability Grade of C, in the 44th national percentile.
What was the worst power outage in Solano County?
The worst outage on record started October 27, 2019 (High Wind), lasting 4 hours and affecting up to 50,374 customers.