Teller CountyPower Outage History
What this grade means
Average — typical outage frequency and duration nationally. This county sits in the middle of the national distribution — its outage frequency and duration over the past 12 years are close to the nationwide median, neither notably better nor worse than most other US counties. A typical amount of backup-power preparedness is reasonable here.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| May 11, 2023 | 60 hrs | 8,165 (74%) | Hail |
| May 21, 2022 | 24 hrs | 6,863 (62%) | Heavy Snow |
| Dec 15, 2021 | 31 hrs | 5,093 (46%) | High Wind |
| May 3, 2021 | 6 hrs | 2,662 (24%) | Unnamed event |
| Mar 31, 2023 | 8 hrs | 2,447 (22%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Teller County, Colorado that day.
Over the 11 years from 2015 to 2025, Teller County recorded 267 distinct power outage events, averaging 3.0 hours per event.
The single worst outage on record in Teller County started May 11, 2023 (Hail), lasting 60 hours and leaving up to 8,165 customers without power (74% of the county) at its peak.
May has historically been the worst month for outages in Teller County, with 44 events recorded during that month across the dataset.
Based on this history, Teller County earns a Reliability Grade of C, placing it in the 52nd percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Colorado
Counties with the closest reliability grade and national percentile to Teller County.
| County | Grade | National percentile |
|---|---|---|
| Crowley County | C | 52nd |
| Costilla County | C | 50th |
| Gilpin County | C | 55th |
| Boulder County | C | 48th |
| Jefferson County | C | 45th |
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 Teller County?
Between 2015 and 2025, Teller County recorded 267 outage events, averaging 3.0 hours each.
What is Teller County's reliability grade?
Teller County has a Reliability Grade of C, in the 52nd national percentile.
What was the worst power outage in Teller County?
The worst outage on record started May 11, 2023 (Hail), lasting 60 hours and affecting up to 8,165 customers.