County annual report · FIPS 49007
2018 Carbon County, UT Power Outage Report
In 2018, customers in Carbon County, UT went without power for an average of 5.9 hours, a total of 23K customer-hours (Utah average 1.9 hours). That ranks 4th worst of 26 Utah counties and 929th of 2,798 nationally.
Compared with UT, the US and 2017
Coverage line is EAGLE-I's share of Utah customers tracked each year.
Biggest outages in Carbon County, 2018
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 23, 2018 00:15 | July 23, 2018 08:15 | 8h | 2,975 | 6,194 |
| 2 | March 18, 2018 18:00 | March 18, 2018 23:30 | 5h 30m | 1,026 | 1,664 |
| 3 | November 28, 2018 16:00 | November 28, 2018 18:45 | 2h 45m | 1,003 | 1,009 |
| 4 | September 11, 2018 23:45 | September 12, 2018 02:00 | 2h 15m | 1,002 | 2,255 |
| 5 | November 7, 2018 20:00 | November 7, 2018 22:45 | 2h 45m | 1,002 | 978 |
| 6 | September 11, 2018 17:15 | September 11, 2018 18:45 | 1h 30m | 936 | 469 |
| 7 | November 14, 2018 18:45 | November 14, 2018 19:15 | 30m | 935 | 468 |
| 8 | February 1, 2018 21:00 | February 1, 2018 21:15 | 15m | 718 | 180 |
| 9 | June 4, 2018 15:15 | June 4, 2018 17:00 | 1h 45m | 615 | 504 |
| 10 | July 16, 2018 19:00 | July 16, 2018 21:00 | 2h | 588 | 294 |
Outage episodes by size in 2018: 17 reached 100+ customers, 5 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 2018, 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 | 2018 | 3.2 hrs | 1.62 | 2.0 hrs | 1.25 |
| City of Helper - (UT) | - | - | - | - | - |
| Price Municipal Corporation | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 80% of Utah's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 3,849 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, UT annual power outage report, 2018, 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/2018/utah/carbon-county