County annual report · FIPS 08003
2018 Alamosa County, CO Power Outage Report
In 2018, customers in Alamosa County, CO went without power for an average of 2.0 hours, a total of 18K customer-hours (Colorado average 1.6 hours). That ranks 19th worst of 49 Colorado counties and 1883rd of 2,798 nationally.
Compared with CO, the US and 2017
Coverage line is EAGLE-I's share of Colorado customers tracked each year.
Biggest outages in Alamosa County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 23, 2018 12:45 | January 23, 2018 20:15 | 7h 30m | 1,689 | 4,694 |
| 2 | December 5, 2018 15:15 | December 5, 2018 17:45 | 2h 30m | 1,203 | 2,928 |
| 3 | October 17, 2018 06:15 | October 17, 2018 09:15 | 3h | 686 | 1,200 |
| 4 | June 29, 2018 02:15 | June 29, 2018 07:15 | 5h | 559 | 1,496 |
| 5 | February 19, 2018 22:45 | February 20, 2018 04:30 | 5h 45m | 272 | 1,530 |
| 6 | February 22, 2018 19:30 | February 22, 2018 21:30 | 2h | 271 | 339 |
| 7 | March 22, 2018 17:45 | March 22, 2018 18:00 | 15m | 261 | 65 |
| 8 | April 17, 2018 17:15 | April 18, 2018 11:15 | 18h | 260 | 244 |
| 9 | July 20, 2018 02:30 | July 20, 2018 05:00 | 2h 30m | 258 | 234 |
| 10 | June 3, 2018 17:30 | June 3, 2018 19:00 | 1h 30m | 255 | 383 |
Outage episodes by size in 2018: 19 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 2018, 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 | 2018 | 1.9 hrs | 1.02 | 1.6 hrs | 0.98 |
| San Luis Valley R E C, Inc | 2018 | 1.9 hrs | 0.93 | 77 min | 0.60 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 88% of Colorado's customers in 2018; 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, 2018, 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/2018/colorado/alamosa-county