County annual report · FIPS 08023
2021 Costilla County, CO Power Outage Report
In 2021, customers in Costilla County, CO went without power for an average of 5.7 hours, a total of 12K customer-hours (Colorado average 2.8 hours). That ranks 16th worst of 52 Colorado counties and 1197th 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 Costilla 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 | December 15, 2021 13:15 | December 17, 2021 00:30 | 1d 11h | 1,084 | 7,977 |
| 2 | May 18, 2021 12:45 | May 19, 2021 03:45 | 15h | 512 | 2,372 |
| 3 | July 1, 2021 12:15 | July 1, 2021 14:00 | 1h 45m | 119 | 120 |
| 4 | September 11, 2021 14:45 | September 11, 2021 18:00 | 3h 15m | 83 | 67 |
| 5 | July 10, 2021 19:30 | July 10, 2021 19:45 | 15m | 80 | 20 |
| 6 | July 23, 2021 13:30 | July 23, 2021 18:15 | 4h 45m | 78 | 41 |
| 7 | January 1, 2021 18:15 | January 1, 2021 22:15 | 4h | 76 | 285 |
| 8 | May 9, 2021 20:45 | May 10, 2021 04:30 | 7h 45m | 43 | 141 |
| 9 | May 31, 2021 20:30 | June 1, 2021 10:45 | 14h 15m | 19 | 268 |
| 10 | October 21, 2021 01:15 | October 21, 2021 01:30 | 15m | 19 | 5 |
Outage episodes by size in 2021: 3 reached 100+ customers, 1 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 Costilla 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 |
| San Isabel Electric Assn, Inc | - | - | - | - | - |
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 ÷ 2,089 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. Costilla County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Costilla 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/costilla-county