Colusa CountyPower Outage History
What this grade means
Worse than average — more frequent or longer outages than most counties. This county's recorded history shows more frequent outages and/or longer restoration times than most US counties over the same 12-year period. If you live here, it's worth taking backup power more seriously than an average household would.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Nov 25, 2025 | 4 hrs | 7,082 (71%) | Unnamed event |
| Oct 27, 2019 | 5 hrs | 5,612 (56%) | Unnamed event |
| Oct 3, 2025 | 6 hrs | 4,373 (44%) | Unnamed event |
| Nov 5, 2020 | 14 hrs | 4,322 (43%) | Drought |
| Sep 18, 2022 | 6 hrs | 4,265 (43%) | Drought |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Colusa County, California that day.
Over the 8 years from 2018 to 2025, Colusa County recorded 520 distinct power outage events, averaging 3.7 hours per event.
The single worst outage on record in Colusa County started November 25, 2025, lasting 4 hours and leaving up to 7,082 customers without power (71% of the county) at its peak.
October has historically been the worst month for outages in Colusa County, with 98 events recorded during that month across the dataset.
Based on this history, Colusa County earns a Reliability Grade of D, placing it in the 28th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in California
Counties with the closest reliability grade and national percentile to Colusa County.
| County | Grade | National percentile |
|---|---|---|
| Monterey County | D | 27th |
| Madera County | D | 27th |
| Placer County | D | 29th |
| Glenn County | D | 32nd |
| San Mateo County | D | 32nd |
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 Colusa County?
Between 2018 and 2025, Colusa County recorded 520 outage events, averaging 3.7 hours each.
What is Colusa County's reliability grade?
Colusa County has a Reliability Grade of D, in the 28th national percentile.
What was the worst power outage in Colusa County?
The worst outage on record started November 25, 2025, lasting 4 hours and affecting up to 7,082 customers.