County annual report · FIPS 49045
2019 Tooele County, UT Power Outage Report
In 2019, customers in Tooele County, UT went without power for an average of 2.1 hours, a total of 61K customer-hours (Utah average 2.5 hours). That ranks 22nd worst of 29 Utah counties and 2007th 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 Tooele 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 | April 1, 2019 15:30 | April 1, 2019 17:15 | 1h 45m | 2,448 | 1,836 |
| 2 | January 21, 2019 08:30 | January 23, 2019 07:00 | 1d 22h | 2,290 | 2,174 |
| 3 | July 4, 2019 23:45 | July 6, 2019 07:30 | 1d 7h | 1,548 | 5,131 |
| 4 | October 14, 2019 18:00 | October 14, 2019 21:15 | 3h 15m | 1,264 | 324 |
| 5 | September 28, 2019 21:30 | September 29, 2019 17:45 | 20h 15m | 1,256 | 1,621 |
| 6 | April 10, 2019 15:00 | April 10, 2019 18:30 | 3h 30m | 954 | 242 |
| 7 | June 13, 2019 22:15 | June 14, 2019 18:15 | 20h | 832 | 1,843 |
| 8 | June 2, 2019 20:30 | June 3, 2019 00:00 | 3h 30m | 820 | 1,441 |
| 9 | October 15, 2019 23:30 | October 16, 2019 21:45 | 22h 15m | 773 | 4,670 |
| 10 | March 21, 2019 01:15 | March 21, 2019 22:45 | 21h 30m | 730 | 1,142 |
Outage episodes by size in 2019: 46 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 Tooele 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 |
| Mt Wheeler Power, Inc | - | - | - | - | - |
| Wells Rural Electric Co | - | - | - | - | - |
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 ÷ 28,885 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. Tooele County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Tooele 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/tooele-county