Fresno County Power Outage History
2014–2025 · 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 |
|---|---|---|---|
| Mar 16, 2020 | 1 hrs | 69,680 (15%) | Unnamed event |
| Jun 5, 2019 | 3 hrs | 22,318 (5%) | Unnamed event |
| Feb 21, 2023 | 42 hrs | 19,144 (4%) | Frost/Freeze |
| Nov 8, 2022 | 7 hrs | 18,807 (4%) | Drought |
| Dec 8, 2019 | 0 hrs | 18,139 (4%) | Unnamed event |
Over the 12 years from 2014 to 2025, Fresno County recorded 3,947 distinct power outage events, averaging 3.4 hours per event.
The single worst outage on record in Fresno County started March 16, 2020, lasting 1 hours and leaving up to 69,680 customers without power (15% of the county) at its peak.
August has historically been the worst month for outages in Fresno County, with 404 events recorded during that month across the dataset.
Based on this history, Fresno County earns a Reliability Grade of B, placing it in the 71st percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Fresno County's outage profile
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Similar counties in California
Counties with the closest reliability grade and national percentile to Fresno County.
| County | Grade | National percentile |
|---|---|---|
| Merced County | B | 70th |
| San Francisco County | B | 73rd |
| Alameda County | B | 68th |
| Imperial County | B | 75th |
| Modoc County | B | 75th |
FAQ
How often does power go out in Fresno County?
Between 2014 and 2025, Fresno County recorded 3,947 outage events, averaging 3.4 hours each.
What is Fresno County's reliability grade?
Fresno County has a Reliability Grade of B, in the 71st national percentile.
What was the worst power outage in Fresno County?
The worst outage on record started March 16, 2020, lasting 1 hours and affecting up to 69,680 customers.