County annual report · FIPS 56007
2020 Carbon County, WY Power Outage Report
In 2020, customers in Carbon County, WY went without power for an average of 4.2 hours, a total of 45K customer-hours (Wyoming average 3.4 hours). That ranks 9th worst of 22 Wyoming counties and 1567th 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 Carbon 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 | August 6, 2020 11:15 | August 6, 2020 13:00 | 1h 45m | 5,403 | 8,089 |
| 2 | October 8, 2020 15:15 | October 8, 2020 19:15 | 4h | 3,155 | 3,204 |
| 3 | April 27, 2020 15:15 | April 27, 2020 22:30 | 7h 15m | 1,600 | 413 |
| 4 | March 9, 2020 14:30 | March 18, 2020 23:30 | 9d 9h | 1,092 | 1,776 |
| 5 | December 21, 2020 17:00 | December 21, 2020 20:30 | 3h 30m | 664 | 516 |
| 6 | September 5, 2020 22:15 | September 7, 2020 01:00 | 1d 2h | 621 | 8,952 |
| 7 | May 3, 2020 13:15 | May 4, 2020 05:00 | 15h 45m | 612 | 1,783 |
| 8 | March 3, 2020 20:15 | March 4, 2020 00:15 | 4h | 591 | 1,102 |
| 9 | August 13, 2020 15:15 | August 13, 2020 22:45 | 7h 30m | 505 | 912 |
| 10 | August 14, 2020 16:45 | August 14, 2020 17:30 | 45m | 503 | 377 |
Outage episodes by size in 2020: 39 reached 100+ customers, 4 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 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 |
|---|---|---|---|---|---|
| PacifiCorp | 2020 | 6.8 hrs | 1.88 | 2.0 hrs | 1.22 |
| Yampa Valley Electric Assn Inc | 2020 | 2.8 hrs | 1.69 | 2.9 hrs | 1.46 |
| Carbon Power & Light, Inc | 2018 | 7.6 hrs | 1.56 | 2.5 hrs | 1.34 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| High Plains Power 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 ÷ 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, 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/carbon-county