Madera County Power Outage History
2018–2025 · California
Worse than average — more frequent or longer outages than most counties. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Oct 28, 2019 | 4 hrs | 17,954 (26%) | Unnamed event |
| Oct 27, 2019 | 3 hrs | 17,954 (26%) | Unnamed event |
| Oct 28, 2019 | 3 hrs | 17,545 (25%) | Unnamed event |
| Oct 28, 2019 | 2 hrs | 17,544 (25%) | Unnamed event |
| Oct 28, 2019 | 7 hrs | 17,542 (25%) | Unnamed event |
Over the 8 years from 2018 to 2025, Madera County recorded 1,140 distinct power outage events, averaging 2.8 hours per event.
The single worst outage on record in Madera County started October 28, 2019, lasting 4 hours and leaving up to 17,954 customers without power (26% of the county) at its peak.
June has historically been the worst month for outages in Madera County, with 117 events recorded during that month across the dataset.
Based on this history, Madera County earns a Reliability Grade of D, placing it in the 27th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Madera County's outage profile
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Similar counties in California
Counties with the closest reliability grade and national percentile to Madera County.
| County | Grade | National percentile |
|---|---|---|
| Monterey County | D | 27th |
| Colusa County | D | 28th |
| Placer County | D | 29th |
| Glenn County | D | 32nd |
| San Mateo County | D | 32nd |
FAQ
How often does power go out in Madera County?
Between 2018 and 2025, Madera County recorded 1,140 outage events, averaging 2.8 hours each.
What is Madera County's reliability grade?
Madera County has a Reliability Grade of D, in the 27th national percentile.
What was the worst power outage in Madera County?
The worst outage on record started October 28, 2019, lasting 4 hours and affecting up to 17,954 customers.