Modoc CountyPower Outage History
What this grade means
Better than average — fewer or shorter outages than most counties. This county's outage history is better than the national median: recorded outages are less frequent and/or shorter in duration than a typical US county experienced over the same 12-year period. It isn't in the top tier nationally, but its track record points to lower-than-average outage risk.
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 hr | 2,627 (38%) | Unnamed event |
| Aug 7, 2025 | <1 hr | 2,312 (33%) | Wildfire |
| Jun 16, 2025 | <1 hr | 2,302 (33%) | Unnamed event |
| Jun 23, 2025 | <1 hr | 2,302 (33%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Modoc County, California that day.
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).
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 |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
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.