Delta County Power Outage History
2019–2025 · Colorado
Top 20% most reliable nationally — infrequent, short outages. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Sep 6, 2024 | 2 hrs | 5,449 (38%) | Unnamed event |
| Apr 28, 2023 | 4 hrs | 5,283 (36%) | Frost/Freeze |
| Apr 22, 2022 | 4 hrs | 4,408 (30%) | High Wind |
| Sep 30, 2021 | 3 hrs | 3,840 (26%) | Drought |
| May 22, 2021 | 3 hrs | 3,470 (24%) | Drought |
Over the 7 years from 2019 to 2025, Delta County recorded 248 distinct power outage events, averaging 2.5 hours per event.
The single worst outage on record in Delta County started September 6, 2024, lasting 2 hours and leaving up to 5,449 customers without power (38% of the county) at its peak.
June has historically been the worst month for outages in Delta County, with 36 events recorded during that month across the dataset.
Based on this history, Delta County earns a Reliability Grade of A, placing it in the 85th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Delta County's outage profile
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Similar counties in Colorado
Counties with the closest reliability grade and national percentile to Delta County.
| County | Grade | National percentile |
|---|---|---|
| Broomfield County | A | 85th |
| Custer County | A | 84th |
| Eagle County | A | 84th |
| Moffat County | A | 84th |
| Pueblo County | A | 84th |
FAQ
How often does power go out in Delta County?
Between 2019 and 2025, Delta County recorded 248 outage events, averaging 2.5 hours each.
What is Delta County's reliability grade?
Delta County has a Reliability Grade of A, in the 85th national percentile.
What was the worst power outage in Delta County?
The worst outage on record started September 6, 2024, lasting 2 hours and affecting up to 5,449 customers.