Modoc County Power Outage History
2017–2025 · California
Better than average — fewer or shorter 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 |
|---|---|---|---|
| Jun 22, 2021 | 3 hrs | 2,714 (39%) | Unnamed event |
| Jun 3, 2022 | 1 hrs | 2,627 (38%) | Unnamed event |
| Aug 7, 2025 | 1 hrs | 2,312 (33%) | Wildfire |
| Jul 12, 2024 | 12 hrs | 2,302 (33%) | Excessive Heat |
| Jun 16, 2025 | 0 hrs | 2,302 (33%) | Unnamed event |
Over the 9 years from 2017 to 2025, Modoc County recorded 240 distinct power outage events, averaging 2.7 hours per event.
The single worst outage on record in Modoc County started June 22, 2021, lasting 3 hours and leaving up to 2,714 customers without power (39% of the county) at its peak.
August has historically been the worst month for outages in Modoc County, with 37 events recorded during that month across the dataset.
Based on this history, Modoc County earns a Reliability Grade of B, placing it in the 75th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Modoc County's outage profile
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Similar counties in California
Counties with the closest reliability grade and national percentile to Modoc County.
| County | Grade | National percentile |
|---|---|---|
| Imperial County | B | 75th |
| San Francisco County | B | 73rd |
| Kings County | B | 78th |
| Fresno County | B | 71st |
| Merced County | B | 70th |
FAQ
How often does power go out in Modoc County?
Between 2017 and 2025, Modoc County recorded 240 outage events, averaging 2.7 hours each.
What is Modoc County's reliability grade?
Modoc County has a Reliability Grade of B, in the 75th national percentile.
What was the worst power outage in Modoc County?
The worst outage on record started June 22, 2021, lasting 3 hours and affecting up to 2,714 customers.