Teller County Power Outage History
2015–2025 · Colorado
Average — typical outage frequency and duration nationally. How grades are calculated
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%) | Heavy Snow |
| 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 |
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 (Heavy Snow), 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).
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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 |
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 (Heavy Snow), lasting 60 hours and affecting up to 8,165 customers.