County annual report · FIPS 08003
2021 Alamosa County, CO Power Outage Report
In 2021, customers in Alamosa County, CO went without power for an average of 1.6 hours, a total of 14K customer-hours (Colorado average 2.8 hours). That ranks 36th worst of 52 Colorado counties and 2438th of 2,974 nationally.
Compared with CO, the US and 2020
Coverage line is EAGLE-I's share of Colorado customers tracked each year.
Biggest outages in Alamosa County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 5, 2021 04:30 | July 5, 2021 06:00 | 1h 30m | 1,198 | 1,797 |
| 2 | November 11, 2021 13:30 | November 11, 2021 22:00 | 8h 30m | 1,093 | 1,447 |
| 3 | October 14, 2021 22:00 | October 14, 2021 23:45 | 1h 45m | 715 | 193 |
| 4 | December 15, 2021 11:15 | December 16, 2021 01:00 | 13h 45m | 641 | 2,952 |
| 5 | October 14, 2021 17:00 | October 14, 2021 17:15 | 15m | 292 | 73 |
| 6 | August 7, 2021 15:45 | August 7, 2021 17:00 | 1h 15m | 290 | 363 |
| 7 | January 27, 2021 16:00 | January 28, 2021 00:15 | 8h 15m | 261 | 464 |
| 8 | June 16, 2021 10:15 | June 16, 2021 13:15 | 3h | 211 | 593 |
| 9 | June 12, 2021 03:30 | June 12, 2021 05:15 | 1h 45m | 180 | 315 |
| 10 | June 25, 2021 22:15 | June 25, 2021 22:45 | 30m | 180 | 90 |
Outage episodes by size in 2021: 21 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 2021, 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 | 2021 | 3.0 hrs | 1.20 | 2.2 hrs | 1.00 |
| San Luis Valley R E C, Inc | 2021 | 10.8 hrs | 0.12 | 1.9 hrs | 0.09 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 83% of Colorado's customers in 2021; 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, 2021, 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/2021/colorado/alamosa-county