County annual report · FIPS 08017
2025 Cheyenne County, CO Power Outage Report
In 2025, customers in Cheyenne County, CO went without power for an average of 17.4 hours, a total of 25K customer-hours (Colorado average 4.6 hours). That ranks 5th worst of 52 Colorado counties and 427th 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 Cheyenne 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 | June 27, 2025 13:30 | June 30, 2025 17:45 | 3d 4h | 1,375 | 4,011 |
| 2 | September 5, 2025 01:45 | December 4, 2025 05:00 | 90d 3h | 836 | 5,532 |
| 3 | March 11, 2025 20:30 | March 20, 2025 20:30 | 9d | 427 | 4,873 |
| 4 | March 4, 2025 06:00 | March 4, 2025 08:15 | 2h 15m | 251 | 565 |
| 5 | June 7, 2025 00:15 | June 7, 2025 20:15 | 20h | 218 | 931 |
| 6 | July 15, 2025 14:15 | September 5, 2025 00:30 | 51d 10h | 165 | 3,502 |
| 7 | February 24, 2025 19:30 | February 24, 2025 20:30 | 1h | 110 | 110 |
| 8 | January 1, 2025 00:00 | January 9, 2025 16:30 | 8d 16h | 84 | 642 |
| 9 | July 6, 2025 11:45 | July 6, 2025 13:45 | 2h | 78 | 156 |
| 10 | July 10, 2025 22:15 | July 10, 2025 23:15 | 1h | 78 | 78 |
Outage episodes by size in 2025: 7 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 Cheyenne 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 |
|---|---|---|---|---|---|
| Wheatland Electric Coop, Inc | 2024 | 3.7 hrs | 2.26 | 2.1 hrs | 1.77 |
| Southeast Colorado Power Assn | 2024 | 11.2 hrs | - | 7.9 hrs | - |
| K C Electric Association | - | - | - | - | - |
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 ÷ 1,412 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. Cheyenne County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Cheyenne 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/cheyenne-county