County annual report · FIPS 08027
2025 Custer County, CO Power Outage Report
In 2025, customers in Custer County, CO went without power for an average of 7.6 hours, a total of 22K customer-hours (Colorado average 4.6 hours). That ranks 12th worst of 52 Colorado counties and 1068th 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 Custer 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 | August 26, 2025 18:00 | August 26, 2025 20:00 | 2h | 1,767 | 3,534 |
| 2 | April 19, 2025 12:15 | April 19, 2025 16:00 | 3h 45m | 1,755 | 6,581 |
| 3 | December 4, 2025 14:15 | December 4, 2025 21:15 | 7h | 1,559 | 11K |
| 4 | August 30, 2025 23:00 | August 31, 2025 03:15 | 4h 15m | 121 | 485 |
| 5 | January 19, 2025 00:30 | January 19, 2025 04:15 | 3h 45m | 88 | 286 |
| 6 | March 12, 2025 20:30 | March 13, 2025 02:00 | 5h 30m | 88 | 312 |
| 7 | June 30, 2025 19:45 | June 30, 2025 22:15 | 2h 30m | 27 | 22 |
| 8 | August 7, 2025 10:30 | August 7, 2025 13:00 | 2h 30m | 8 | 20 |
| 9 | April 20, 2025 18:15 | April 20, 2025 22:00 | 3h 45m | 6 | 14 |
| 10 | May 31, 2025 04:00 | May 31, 2025 07:45 | 3h 45m | 4 | 14 |
Outage episodes by size in 2025: 4 reached 100+ customers, 3 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 Custer 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 |
| Black Hills Colorado Electric, LLC | 2024 | 5.4 hrs | 2.39 | 1.7 hrs | 1.42 |
| Sangre De Cristo Elec Assn Inc | 2018 | 2.2 hrs | 1.23 | 2.2 hrs | 1.23 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| 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 n/a of Colorado's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 2,930 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. Custer County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Custer 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/custer-county