County annual report · FIPS 56021
2021 Laramie County, WY Power Outage Report
In 2021, customers in Laramie County, WY went without power for an average of 1.1 hours, a total of 60K customer-hours (Wyoming average 2.2 hours). That ranks 17th worst of 20 Wyoming counties and 2609th of 2,974 nationally.
Compared with WY, the US and 2020
Coverage line is EAGLE-I's share of Wyoming customers tracked each year.
Biggest outages in Laramie 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 | March 15, 2021 08:30 | March 15, 2021 08:45 | 15m | 3,529 | 882 |
| 2 | June 9, 2021 03:30 | June 9, 2021 08:30 | 5h | 2,881 | 3,351 |
| 3 | March 10, 2021 09:15 | March 10, 2021 12:45 | 3h 30m | 2,471 | 7,703 |
| 4 | January 14, 2021 03:30 | January 14, 2021 08:45 | 5h 15m | 2,455 | 5,290 |
| 5 | March 10, 2021 04:30 | March 10, 2021 08:30 | 4h | 2,362 | 695 |
| 6 | March 14, 2021 08:30 | March 14, 2021 19:15 | 10h 45m | 1,856 | 13K |
| 7 | March 15, 2021 17:15 | March 15, 2021 20:15 | 3h | 1,810 | 3,550 |
| 8 | January 3, 2021 19:30 | January 4, 2021 01:45 | 6h 15m | 1,195 | 2,098 |
| 9 | February 22, 2021 08:00 | February 22, 2021 12:30 | 4h 30m | 813 | 1,480 |
| 10 | March 13, 2021 17:00 | March 13, 2021 21:30 | 4h 30m | 719 | 1,011 |
Outage episodes by size in 2021: 43 reached 100+ customers, 8 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 Laramie 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 |
|---|---|---|---|---|---|
| Wyrulec Company | 2018 | 3.0 hrs | 1.03 | 71 min | 0.72 |
| Cheyenne Light Fuel & Power | 2021 | 4.0 hrs | 1.06 | 32 min | 0.39 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| High West Energy, Inc | - | - | - | - | - |
| Black Hills Energy | - | - | - | - | - |
| Wheatland Rural Elec Assn, Inc | - | - | - | - | - |
| City of Pine Bluffs - (WY) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 71% of Wyoming's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 52,987 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. Laramie County has data for 2016–2025.
Cite this report
MassOutage (massoutage.com), Laramie County, WY 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/wyoming/laramie-county