County annual report · FIPS 56045
2020 Weston County, WY Power Outage Report
In 2020, customers in Weston County, WY went without power for an average of 4.9 hours, a total of 19K customer-hours (Wyoming average 3.4 hours). That ranks 8th worst of 22 Wyoming counties and 1412th of 3,019 nationally.
Compared with WY, the US and 2019
Coverage line is EAGLE-I's share of Wyoming customers tracked each year.
Biggest outages in Weston 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 | July 31, 2020 03:15 | July 31, 2020 19:15 | 16h | 1,176 | 3,908 |
| 2 | December 13, 2020 00:15 | December 14, 2020 15:15 | 1d 15h | 1,002 | 2,030 |
| 3 | May 1, 2020 01:15 | May 1, 2020 15:00 | 13h 45m | 575 | 895 |
| 4 | July 28, 2020 18:30 | July 28, 2020 22:15 | 3h 45m | 481 | 374 |
| 5 | June 6, 2020 04:00 | June 9, 2020 17:30 | 3d 13h | 362 | 5,077 |
| 6 | October 14, 2020 16:15 | October 15, 2020 05:00 | 12h 45m | 361 | 395 |
| 7 | May 21, 2020 14:00 | May 22, 2020 01:45 | 11h 45m | 299 | 493 |
| 8 | May 20, 2020 13:00 | May 21, 2020 07:45 | 18h 45m | 283 | 225 |
| 9 | August 5, 2020 23:15 | August 5, 2020 23:30 | 15m | 214 | 54 |
| 10 | May 14, 2020 16:45 | May 14, 2020 17:15 | 30m | 212 | 104 |
Outage episodes by size in 2020: 22 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 Weston 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 |
|---|---|---|---|---|---|
| Black Hills Power, Inc. | 2020 | 63 min | 0.56 | 30 min | 0.36 |
| Powder River Energy Corp | 2020 | 4.8 hrs | 2.30 | 3.2 hrs | 1.94 |
| Niobrara 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 71% of Wyoming's customers in 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 3,933 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. Weston County has data for 2016–2025.
Cite this report
MassOutage (massoutage.com), Weston County, WY 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/wyoming/weston-county