Lake CountyPower Outage History
2014–2025 · Colorado
Better than average — fewer or shorter outages than most counties.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Oct 21, 2025 | 2 hrs | 4,466 (91%) | Unnamed event |
| May 12, 2024 | 11 hrs | 2,766 (56%) | Heavy Snow |
| Feb 15, 2019 | <1 hr | 2,458 (50%) | Winter Storm |
| Dec 18, 2025 | 71 hrs | 1,840 (37%) | Unnamed event |
| Dec 25, 2023 | 3 hrs | 1,777 (36%) | Unnamed event |
Over the 12 years from 2014 to 2025, Lake County recorded 195 distinct power outage events, averaging 3.3 hours per event.
The single worst outage on record in Lake County started October 21, 2025, lasting 2 hours and leaving up to 4,466 customers without power (91% of the county) at its peak.
July has historically been the worst month for outages in Lake County, with 27 events recorded during that month across the dataset.
Based on this history, Lake County earns a Reliability Grade of B, placing it in the 62nd percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Lake County's outage profile
See more picks in our Best Small Power Stations (Under 1,000Wh) roundup.
Outage-prep kit
See our outage-prep guides.
Similar counties in Colorado
Counties with the closest reliability grade and national percentile to Lake County.
| County | Grade | National percentile |
|---|---|---|
| Weld County | B | 61st |
| La Plata County | B | 66th |
| Lincoln County | B | 66th |
| Elbert County | B | 68th |
| Denver County | B | 69th |
Most reliable counties in Colorado
The top 3 counties in Colorado by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Rio Blanco County | A | 99th |
| Baca County | A | 98th |
| Washington County | A | 98th |
Least reliable counties in Colorado
The bottom 3 counties in Colorado by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Clear Creek County | F | 16th |
| Cheyenne County | D | 20th |
| Jackson County | D | 22nd |
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 Lake County?
Between 2014 and 2025, Lake County recorded 195 outage events, averaging 3.3 hours each.
What is Lake County's reliability grade?
Lake County has a Reliability Grade of B, in the 62nd national percentile.
What was the worst power outage in Lake County?
The worst outage on record started October 21, 2025, lasting 2 hours and affecting up to 4,466 customers.