County annual report · FIPS 08027
2018 Custer County, CO Power Outage Report
In 2018, customers in Custer County, CO went without power for an average of 2.2 hours, a total of 6,389 customer-hours (Colorado average 1.6 hours). That ranks 17th worst of 49 Colorado counties and 1788th 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 Custer 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 | July 25, 2018 19:15 | July 25, 2018 19:45 | 30m | 1,734 | 867 |
| 2 | September 9, 2018 12:30 | September 9, 2018 14:15 | 1h 45m | 1,732 | 3,031 |
| 3 | August 2, 2018 23:00 | August 2, 2018 23:15 | 15m | 220 | 55 |
| 4 | August 3, 2018 00:00 | August 3, 2018 01:30 | 1h 30m | 220 | 249 |
| 5 | August 31, 2018 00:15 | August 31, 2018 03:15 | 3h | 220 | 634 |
| 6 | September 22, 2018 03:45 | September 22, 2018 06:00 | 2h 15m | 220 | 495 |
| 7 | August 3, 2018 02:45 | August 3, 2018 03:30 | 45m | 115 | 58 |
| 8 | November 24, 2018 17:15 | November 25, 2018 01:00 | 7h 45m | 115 | 891 |
| 9 | May 11, 2018 13:30 | May 11, 2018 13:45 | 15m | 12 | 3 |
| 10 | January 22, 2018 14:30 | January 22, 2018 16:15 | 1h 45m | 9 | 11 |
Outage episodes by size in 2018: 8 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 Custer 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 |
| Black Hills Colorado Electric, LLC | 2018 | 73 min | 1.02 | 56 min | 0.87 |
| 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 88% of Colorado's customers in 2018; 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, 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/custer-county