Alamosa CountyPower Outage History
What this grade means
Better than average — fewer or shorter outages than most counties. This county's outage history is better than the national median: recorded outages are less frequent and/or shorter in duration than a typical US county experienced over the same 12-year period. It isn't in the top tier nationally, but its track record points to lower-than-average outage risk.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| May 10, 2024 | 6 hrs | 7,959 (84%) | Heavy Snow |
| Apr 18, 2025 | 2 hrs | 7,022 (74%) | Unnamed event |
| Sep 9, 2020 | 25 hrs | 6,108 (65%) | Winter Storm |
| Sep 27, 2019 | <1 hr | 5,439 (57%) | Unnamed event |
| Jun 1, 2025 | 4 hrs | 4,113 (43%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Alamosa County, Colorado that day.
Over the 12 years from 2014 to 2025, Alamosa County recorded 283 distinct power outage events, averaging 2.3 hours per event.
The single worst outage on record in Alamosa County started May 10, 2024 (Heavy Snow), lasting 6 hours and leaving up to 7,959 customers without power (84% of the county) at its peak.
September has historically been the worst month for outages in Alamosa County, with 39 events recorded during that month across the dataset.
Based on this history, Alamosa County earns a Reliability Grade of B, placing it in the 74th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Colorado
Counties with the closest reliability grade and national percentile to Alamosa County.
| County | Grade | National percentile |
|---|---|---|
| Logan County | B | 75th |
| Adams County | B | 75th |
| Chaffee County | B | 77th |
| Otero County | B | 78th |
| Rio Grande County | B | 78th |
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 Alamosa County?
Between 2014 and 2025, Alamosa County recorded 283 outage events, averaging 2.3 hours each.
What is Alamosa County's reliability grade?
Alamosa County has a Reliability Grade of B, in the 74th national percentile.
What was the worst power outage in Alamosa County?
The worst outage on record started May 10, 2024 (Heavy Snow), lasting 6 hours and affecting up to 7,959 customers.