County annual report · FIPS 56007
2017 Carbon County, WY Power Outage Report
In 2017, customers in Carbon County, WY went without power for an average of 0.4 hours, a total of 4,621 customer-hours (Wyoming average 0.9 hours). That ranks 14th worst of 19 Wyoming counties and 2340th of 2,786 nationally.
Compared with WY, the US
Coverage line is EAGLE-I's share of Wyoming customers tracked each year.
Biggest outages in Carbon County, 2017
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 30, 2017 14:30 | August 30, 2017 18:00 | 3h 30m | 1,971 | 2,127 |
| 2 | August 22, 2017 21:45 | August 23, 2017 03:45 | 6h | 224 | 439 |
| 3 | November 5, 2017 06:45 | November 5, 2017 10:45 | 4h | 218 | 255 |
| 4 | September 13, 2017 14:30 | September 13, 2017 19:15 | 4h 45m | 97 | 461 |
| 5 | August 30, 2017 21:15 | August 31, 2017 06:15 | 9h | 92 | 293 |
| 6 | September 14, 2017 08:45 | September 14, 2017 12:00 | 3h 15m | 70 | 176 |
| 7 | October 10, 2017 08:15 | October 10, 2017 13:30 | 5h 15m | 56 | 131 |
| 8 | December 22, 2017 09:00 | December 22, 2017 21:00 | 12h | 33 | 220 |
| 9 | September 3, 2017 02:45 | September 3, 2017 09:15 | 6h 30m | 32 | 97 |
| 10 | August 10, 2017 17:45 | August 10, 2017 21:45 | 4h | 25 | 23 |
Outage episodes by size in 2017: 3 reached 100+ customers, 1 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 2017, 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 | 2017 | 5.2 hrs | 2.01 | 2.4 hrs | 1.43 |
| Yampa Valley Electric Assn Inc | 2017 | 5.7 hrs | 1.90 | 2.7 hrs | 1.11 |
| Carbon Power & Light, Inc | 2017 | 14.9 hrs | 3.52 | 6.7 hrs | 3.50 |
| 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 n/a of Wyoming's customers in 2017; 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, 2017, 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/2017/wyoming/carbon-county