County annual report · FIPS 08003
2025 Alamosa County, CO Power Outage Report
In 2025, customers in Alamosa County, CO went without power for an average of 4.4 hours, a total of 41K customer-hours (Colorado average 4.6 hours). That ranks 20th worst of 52 Colorado counties and 1663rd of 3,000 nationally.
Compared with CO, the US and 2024
Coverage line is EAGLE-I's share of Colorado customers tracked each year.
Biggest outages in Alamosa County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 18, 2025 12:30 | April 18, 2025 14:45 | 2h 15m | 7,022 | 11K |
| 2 | June 1, 2025 04:15 | June 1, 2025 07:45 | 3h 30m | 4,113 | 14K |
| 3 | September 9, 2025 01:15 | September 9, 2025 06:00 | 4h 45m | 731 | 3,472 |
| 4 | October 4, 2025 21:00 | October 4, 2025 23:45 | 2h 45m | 731 | 755 |
| 5 | October 5, 2025 18:15 | October 5, 2025 20:15 | 2h | 458 | 813 |
| 6 | December 12, 2025 15:45 | December 12, 2025 21:00 | 5h 15m | 431 | 235 |
| 7 | July 16, 2025 13:30 | July 16, 2025 21:15 | 7h 45m | 404 | 843 |
| 8 | June 9, 2025 23:00 | June 10, 2025 00:30 | 1h 30m | 366 | 477 |
| 9 | May 30, 2025 14:00 | May 30, 2025 15:15 | 1h 15m | 274 | 343 |
| 10 | April 15, 2025 19:30 | April 15, 2025 21:45 | 2h 15m | 230 | 479 |
Outage episodes by size in 2025: 22 reached 100+ customers, 2 reached 1,000+ customers, 0 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Alamosa County reported on EIA Form 861 for 2025, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Public Service Co of Colorado | 2024 | 5.9 hrs | 1.68 | 2.6 hrs | 1.36 |
| San Luis Valley R E C, Inc | 2024 | 4.9 hrs | 1.78 | 1.6 hrs | 0.89 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Colorado's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 9,288 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Alamosa County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Alamosa County, CO annual power outage report, 2025, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2025/colorado/alamosa-county