Amador County Power Outage History
2018–2025 · California
Bottom 20% least reliable nationally — frequent and/or long outages. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Oct 27, 2019 | 2 hrs | 22,136 (100%) | Wildfire |
| Oct 27, 2019 | 5 hrs | 22,136 (100%) | Wildfire |
| Oct 27, 2019 | 4 hrs | 22,136 (100%) | Wildfire |
| Oct 27, 2019 | 1 hrs | 22,136 (100%) | Wildfire |
| Oct 27, 2019 | 2 hrs | 22,136 (100%) | Wildfire |
Over the 8 years from 2018 to 2025, Amador County recorded 795 distinct power outage events, averaging 4.3 hours per event.
The single worst outage on record in Amador County started October 27, 2019 (Wildfire), lasting 2 hours and leaving up to 22,136 customers without power (100% of the county) at its peak.
October has historically been the worst month for outages in Amador County, with 159 events recorded during that month across the dataset.
Based on this history, Amador County earns a Reliability Grade of F, placing it in the 1st 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 Amador County.
| County | Grade | National percentile |
|---|---|---|
| Tuolumne County | F | 1st |
| Calaveras County | F | 1st |
| Butte County | F | 1st |
| Mariposa County | F | 1st |
| Plumas County | F | 1st |
FAQ
How often does power go out in Amador County?
Between 2018 and 2025, Amador County recorded 795 outage events, averaging 4.3 hours each.
What is Amador County's reliability grade?
Amador County has a Reliability Grade of F, in the 1st national percentile.
What was the worst power outage in Amador County?
The worst outage on record started October 27, 2019 (Wildfire), lasting 2 hours and affecting up to 22,136 customers.