County annual report · FIPS 49035
2019 Salt Lake County, UT Power Outage Report
In 2019, customers in Salt Lake County, UT went without power for an average of 2.6 hours, a total of 1.3M customer-hours (Utah average 2.5 hours). That ranks 18th worst of 29 Utah counties and 1813th of 2,945 nationally.
Compared with UT, the US and 2018
Coverage line is EAGLE-I's share of Utah customers tracked each year.
Biggest outages in Salt Lake County, 2019
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 18, 2019 18:45 | August 25, 2019 11:30 | 6d 16h | 20,046 | 19K |
| 2 | September 22, 2019 10:45 | September 27, 2019 12:15 | 5d 1h | 19,873 | 15K |
| 3 | March 27, 2019 13:15 | April 3, 2019 11:15 | 6d 22h | 15,482 | 316K |
| 4 | July 8, 2019 04:00 | July 9, 2019 06:00 | 1d 2h | 7,840 | 33K |
| 5 | September 18, 2019 06:45 | September 22, 2019 01:30 | 3d 18h | 7,631 | 19K |
| 6 | January 17, 2019 09:00 | January 23, 2019 13:45 | 6d 4h | 7,446 | 49K |
| 7 | April 3, 2019 12:15 | April 7, 2019 10:00 | 3d 21h | 7,353 | 31K |
| 8 | October 19, 2019 06:30 | October 24, 2019 13:00 | 5d 6h | 6,803 | 13K |
| 9 | September 14, 2019 07:45 | September 18, 2019 04:15 | 3d 20h | 6,555 | 30K |
| 10 | February 12, 2019 13:15 | February 17, 2019 14:00 | 5d | 5,928 | 50K |
Outage episodes by size in 2019: 116 reached 100+ customers, 51 reached 1,000+ customers, 3 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 Salt Lake County reported on EIA Form 861 for 2019, 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 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| City of Murray - (UT) | - | - | - | - | - |
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 2019; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 494,047 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. Salt Lake County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Salt Lake County, UT annual power outage report, 2019, 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/2019/utah/salt-lake-county