County annual report · FIPS 08017
2020 Cheyenne County, CO Power Outage Report
In 2020, customers in Cheyenne County, CO went without power for an average of 9.4 hours, a total of 13K customer-hours (Colorado average 2.2 hours). That ranks 6th worst of 57 Colorado counties and 837th of 3,019 nationally.
Compared with CO, the US and 2019
Coverage line is EAGLE-I's share of Colorado customers tracked each year.
Biggest outages in Cheyenne County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 29, 2020 15:15 | September 29, 2020 18:00 | 2h 45m | 1,391 | 2,400 |
| 2 | November 3, 2020 11:15 | November 23, 2020 21:45 | 20d 10h | 1,372 | 1,777 |
| 3 | July 3, 2020 22:15 | July 6, 2020 14:30 | 2d 16h | 996 | 1,704 |
| 4 | July 13, 2020 00:00 | July 13, 2020 23:00 | 23h | 996 | 1,314 |
| 5 | June 8, 2020 16:45 | June 8, 2020 18:00 | 1h 15m | 993 | 1,241 |
| 6 | January 17, 2020 13:45 | January 17, 2020 14:00 | 15m | 600 | 150 |
| 7 | January 17, 2020 15:15 | January 20, 2020 16:45 | 3d 1h | 600 | 745 |
| 8 | October 21, 2020 06:30 | October 21, 2020 07:45 | 1h 15m | 530 | 535 |
| 9 | September 11, 2020 13:30 | September 22, 2020 19:30 | 11d 6h | 130 | 580 |
| 10 | March 15, 2020 19:00 | March 16, 2020 21:00 | 1d 2h | 95 | 232 |
Outage episodes by size in 2020: 9 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 Cheyenne County reported on EIA Form 861 for 2020, 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 | 2020 | 3.3 hrs | 1.22 | 1.9 hrs | 0.96 |
| Southeast Colorado Power Assn | 2020 | 5.7 hrs | - | 5.0 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 84% of Colorado's customers in 2020; 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, 2020, 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/2020/colorado/cheyenne-county