Glenn 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 |
|---|---|---|---|
| Sep 25, 2025 | 2 hrs | 4,245 (35%) | Unnamed event |
| May 7, 2022 | 19 hrs | 4,221 (35%) | Drought |
| Sep 29, 2018 | 0 hrs | 4,111 (34%) | Unnamed event |
| Sep 18, 2022 | 10 hrs | 4,110 (34%) | Drought |
| Nov 8, 2025 | 2 hrs | 4,103 (34%) | Unnamed event |
Over the 8 years from 2018 to 2025, Glenn County recorded 587 distinct power outage events, averaging 3.4 hours per event.
The single worst outage on record in Glenn County started September 25, 2025, lasting 2 hours and leaving up to 4,245 customers without power (35% of the county) at its peak.
October has historically been the worst month for outages in Glenn County, with 100 events recorded during that month across the dataset.
Based on this history, Glenn County earns a Reliability Grade of D, placing it in the 32nd 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 Glenn County.
| County | Grade | National percentile |
|---|---|---|
| San Mateo County | D | 32nd |
| Ventura County | D | 35th |
| Placer County | D | 29th |
| Colusa County | D | 28th |
| Monterey County | D | 27th |
FAQ
How often does power go out in Glenn County?
Between 2018 and 2025, Glenn County recorded 587 outage events, averaging 3.4 hours each.
What is Glenn County's reliability grade?
Glenn County has a Reliability Grade of D, in the 32nd national percentile.
What was the worst power outage in Glenn County?
The worst outage on record started September 25, 2025, lasting 2 hours and affecting up to 4,245 customers.