County annual report · FIPS 49043
2019 Summit County, UT Power Outage Report
In 2019, customers in Summit County, UT went without power for an average of 8.0 hours, a total of 146K customer-hours (Utah average 2.5 hours). That ranks 6th worst of 29 Utah counties and 702nd 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 Summit 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 | March 28, 2019 23:15 | April 1, 2019 03:00 | 3d 3h | 2,646 | 38K |
| 2 | September 28, 2019 13:15 | September 30, 2019 14:30 | 2d 1h | 2,174 | 4,965 |
| 3 | November 7, 2019 18:15 | November 8, 2019 04:15 | 10h | 1,242 | 4,163 |
| 4 | January 21, 2019 14:00 | January 23, 2019 08:00 | 1d 18h | 1,208 | 6,662 |
| 5 | March 28, 2019 05:45 | March 28, 2019 21:45 | 16h | 1,152 | 1,521 |
| 6 | March 11, 2019 11:00 | March 11, 2019 11:15 | 15m | 907 | 227 |
| 7 | February 25, 2019 16:45 | February 26, 2019 05:00 | 12h 15m | 826 | 1,214 |
| 8 | April 15, 2019 13:45 | April 16, 2019 03:15 | 13h 30m | 824 | 966 |
| 9 | April 18, 2019 21:30 | April 19, 2019 03:30 | 6h | 824 | 629 |
| 10 | January 17, 2019 20:45 | January 21, 2019 05:15 | 3d 8h | 788 | 3,865 |
Outage episodes by size in 2019: 74 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 Summit 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 |
| Bridger Valley Elec Assn, 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 80% of Utah's customers in 2019; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 18,106 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. Summit County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Summit 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/summit-county