County annual report · FIPS 49011
2021 Davis County, UT Power Outage Report
In 2021, customers in Davis County, UT went without power for an average of 1.9 hours, a total of 249K customer-hours (Utah average 2.6 hours). That ranks 19th worst of 25 Utah counties and 2244th of 2,974 nationally.
Compared with UT, the US and 2020
Coverage line is EAGLE-I's share of Utah customers tracked each year.
Biggest outages in Davis County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 10, 2021 15:45 | September 11, 2021 22:30 | 1d 6h | 8,279 | 8,466 |
| 2 | August 9, 2021 18:15 | August 10, 2021 01:00 | 6h 45m | 8,041 | 2,021 |
| 3 | February 15, 2021 08:15 | February 15, 2021 11:30 | 3h 15m | 5,840 | 16K |
| 4 | August 17, 2021 21:00 | August 19, 2021 12:30 | 1d 15h | 5,400 | 31K |
| 5 | January 28, 2021 13:45 | January 28, 2021 22:15 | 8h 30m | 2,986 | 5,806 |
| 6 | April 13, 2021 22:00 | April 15, 2021 07:00 | 1d 9h | 2,913 | 15K |
| 7 | November 5, 2021 14:45 | November 5, 2021 18:45 | 4h | 2,623 | 774 |
| 8 | November 15, 2021 22:00 | November 16, 2021 04:15 | 6h 15m | 2,513 | 3,369 |
| 9 | February 16, 2021 01:30 | February 16, 2021 01:45 | 15m | 2,464 | 616 |
| 10 | September 14, 2021 14:30 | September 14, 2021 23:15 | 8h 45m | 2,460 | 1,601 |
Outage episodes by size in 2021: 125 reached 100+ customers, 26 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 Davis County reported on EIA Form 861 for 2021, 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 | 2021 | 4.3 hrs | 1.86 | 2.0 hrs | 1.19 |
| Kaysville City Corporation | 2018 | 68 min | 0.42 | 33 min | 0.33 |
| City of Bountiful | - | - | - | - | - |
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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 129,095 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. Davis County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Davis County, UT annual power outage report, 2021, 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/2021/utah/davis-county