County annual report · FIPS 49043
2020 Summit County, UT Power Outage Report
In 2020, customers in Summit County, UT went without power for an average of 9.6 hours, a total of 173K customer-hours (Utah average 8.7 hours). That ranks 7th worst of 29 Utah counties and 821st of 3,019 nationally.
Compared with UT, the US and 2019
Coverage line is EAGLE-I's share of Utah customers tracked each year.
Biggest outages in Summit County, 2020
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 1, 2020 10:00 | July 1, 2020 23:15 | 13h 15m | 3,699 | 5,296 |
| 2 | November 14, 2020 07:30 | November 15, 2020 00:45 | 17h 15m | 3,108 | 13K |
| 3 | August 16, 2020 05:00 | August 16, 2020 05:45 | 45m | 2,757 | 2,018 |
| 4 | August 3, 2020 18:00 | August 4, 2020 02:00 | 8h | 2,739 | 695 |
| 5 | October 28, 2020 20:45 | October 29, 2020 02:15 | 5h 30m | 2,734 | 2,196 |
| 6 | November 7, 2020 05:45 | November 7, 2020 17:00 | 11h 15m | 2,661 | 16K |
| 7 | November 10, 2020 01:00 | November 10, 2020 20:15 | 19h 15m | 2,089 | 4,105 |
| 8 | April 9, 2020 20:30 | April 9, 2020 22:00 | 1h 30m | 2,075 | 520 |
| 9 | October 19, 2020 18:30 | October 20, 2020 04:30 | 10h | 1,897 | 3,356 |
| 10 | February 6, 2020 15:45 | February 7, 2020 23:15 | 1d 7h | 1,795 | 5,416 |
Outage episodes by size in 2020: 71 reached 100+ customers, 19 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 2020, 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 | 2020 | 6.8 hrs | 1.88 | 2.0 hrs | 1.22 |
| 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 79% of Utah's customers in 2020; 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, 2020, 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/2020/utah/summit-county