County annual report · FIPS 56007
2023 Carbon County, WY Power Outage Report
In 2023, customers in Carbon County, WY went without power for an average of 1.4 hours, a total of 15K customer-hours (Wyoming average 2.0 hours). That ranks 15th worst of 20 Wyoming counties and 2539th of 2,977 nationally.
Compared with WY, the US and 2022
Coverage line is EAGLE-I's share of Wyoming customers tracked each year.
Biggest outages in Carbon County, 2023
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 30, 2023 06:45 | June 30, 2023 12:45 | 6h | 762 | 4,569 |
| 2 | April 19, 2023 21:45 | April 20, 2023 18:45 | 21h | 531 | 818 |
| 3 | October 14, 2023 17:30 | October 14, 2023 19:00 | 1h 30m | 504 | 756 |
| 4 | June 22, 2023 21:00 | June 23, 2023 05:15 | 8h 15m | 315 | 653 |
| 5 | September 14, 2023 16:30 | September 14, 2023 23:15 | 6h 45m | 246 | 747 |
| 6 | August 2, 2023 11:45 | August 2, 2023 15:00 | 3h 15m | 144 | 431 |
| 7 | June 8, 2023 06:00 | June 8, 2023 07:15 | 1h 15m | 113 | 61 |
| 8 | October 11, 2023 20:15 | October 11, 2023 21:45 | 1h 30m | 110 | 164 |
| 9 | October 1, 2023 21:30 | October 2, 2023 05:00 | 7h 30m | 109 | 489 |
| 10 | February 22, 2023 08:45 | February 24, 2023 22:00 | 2d 13h | 68 | 2,485 |
Outage episodes by size in 2023: 9 reached 100+ customers, 0 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 Carbon County reported on EIA Form 861 for 2023, 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 |
|---|---|---|---|---|---|
| PacifiCorp | 2023 | 8.2 hrs | 1.42 | 1.9 hrs | 0.99 |
| High Plains Power Inc | 2023 | 5.4 hrs | - | 5.4 hrs | - |
| Yampa Valley Electric Assn Inc | 2023 | 2.4 hrs | 1.16 | 2.4 hrs | 1.16 |
| Carbon Power & Light, Inc | 2018 | 7.6 hrs | 1.56 | 2.5 hrs | 1.34 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
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 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 10,767 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. Carbon County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Carbon County, WY annual power outage report, 2023, 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/2023/wyoming/carbon-county