County annual report · FIPS 56045
2025 Weston County, WY Power Outage Report
In 2025, customers in Weston County, WY went without power for an average of 10.8 hours, a total of 43K customer-hours (Wyoming average 3.8 hours). That ranks 4th worst of 20 Wyoming counties and 739th of 3,000 nationally.
Compared with WY, the US and 2024
Coverage line is EAGLE-I's share of Wyoming customers tracked each year.
Biggest outages in Weston 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 | November 13, 2025 20:00 | November 14, 2025 05:00 | 9h | 4,782 | 18K |
| 2 | August 30, 2025 21:15 | August 31, 2025 00:15 | 3h | 1,335 | 1,778 |
| 3 | December 18, 2025 07:30 | December 22, 2025 00:15 | 3d 16h | 1,179 | 3,922 |
| 4 | December 18, 2025 00:45 | December 18, 2025 04:15 | 3h 30m | 792 | 269 |
| 5 | November 3, 2025 17:30 | November 3, 2025 18:30 | 1h | 722 | 541 |
| 6 | August 11, 2025 15:30 | August 11, 2025 18:45 | 3h 15m | 720 | 1,161 |
| 7 | June 19, 2025 15:00 | June 19, 2025 18:00 | 3h | 509 | 1,527 |
| 8 | June 13, 2025 20:15 | June 13, 2025 23:15 | 3h | 508 | 1,524 |
| 9 | July 24, 2025 14:15 | July 24, 2025 15:30 | 1h 15m | 381 | 476 |
| 10 | November 5, 2025 16:15 | November 5, 2025 17:30 | 1h 15m | 381 | 403 |
Outage episodes by size in 2025: 22 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 Weston 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 |
|---|---|---|---|---|---|
| Black Hills Power, Inc. | 2024 | 40 min | 0.70 | 40 min | 0.70 |
| Powder River Energy Corp | 2024 | 8.3 hrs | 2.88 | 4.9 hrs | 2.24 |
| 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 n/a of Wyoming's customers in 2025; 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, 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/wyoming/weston-county