County annual report · FIPS 08043
2021 Fremont County, CO Power Outage Report
In 2021, customers in Fremont County, CO went without power for an average of 1.7 hours, a total of 32K customer-hours (Colorado average 2.8 hours). That ranks 33rd worst of 52 Colorado counties and 2372nd 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 Fremont 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 14:45 | December 19, 2021 04:15 | 3d 13h | 4,335 | 21K |
| 2 | July 8, 2021 19:15 | July 8, 2021 20:00 | 45m | 1,521 | 382 |
| 3 | January 28, 2021 17:45 | January 28, 2021 20:15 | 2h 30m | 1,031 | 2,578 |
| 4 | August 6, 2021 23:00 | August 7, 2021 05:15 | 6h 15m | 418 | 1,097 |
| 5 | July 24, 2021 13:00 | July 24, 2021 13:30 | 30m | 265 | 133 |
| 6 | July 1, 2021 03:45 | July 1, 2021 08:15 | 4h 30m | 232 | 493 |
| 7 | August 19, 2021 16:00 | August 19, 2021 20:30 | 4h 30m | 188 | 146 |
| 8 | May 30, 2021 01:30 | May 30, 2021 02:15 | 45m | 185 | 139 |
| 9 | May 30, 2021 03:00 | May 30, 2021 03:45 | 45m | 185 | 139 |
| 10 | July 23, 2021 22:15 | July 24, 2021 07:30 | 9h 15m | 172 | 518 |
Outage episodes by size in 2021: 17 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 Fremont 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 |
| CORE Electric Cooperative | 2021 | 2.7 hrs | 0.91 | 46 min | 0.54 |
| Black Hills Colorado Electric, LLC | 2021 | 5.5 hrs | 1.95 | 65 min | 1.09 |
| 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 | - | - | - | - | - |
| Black Hills Energy | - | - | - | - | - |
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 ÷ 19,018 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. Fremont County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Fremont 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/fremont-county