County annual report · FIPS 49019
2021 Grand County, UT Power Outage Report
In 2021, customers in Grand County, UT went without power for an average of 6.4 hours, a total of 25K customer-hours (Utah average 2.6 hours). That ranks 7th worst of 25 Utah counties and 1108th 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 Grand 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 | July 29, 2021 01:00 | July 29, 2021 08:30 | 7h 30m | 4,507 | 6,299 |
| 2 | February 2, 2021 21:00 | February 2, 2021 23:00 | 2h | 713 | 892 |
| 3 | October 4, 2021 21:45 | October 4, 2021 23:00 | 1h 15m | 697 | 700 |
| 4 | December 15, 2021 03:45 | December 16, 2021 17:15 | 1d 13h | 576 | 5,462 |
| 5 | March 4, 2021 09:15 | March 4, 2021 20:45 | 11h 30m | 574 | 1,155 |
| 6 | August 2, 2021 21:15 | August 2, 2021 23:45 | 2h 30m | 573 | 1,433 |
| 7 | February 26, 2021 13:15 | February 26, 2021 17:00 | 3h 45m | 572 | 1,573 |
| 8 | October 26, 2021 10:45 | October 26, 2021 18:00 | 7h 15m | 572 | 1,251 |
| 9 | August 19, 2021 11:15 | August 19, 2021 20:30 | 9h 15m | 534 | 1,086 |
| 10 | June 15, 2021 03:30 | June 15, 2021 06:30 | 3h | 312 | 858 |
Outage episodes by size in 2021: 13 reached 100+ customers, 1 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 Grand 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 |
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 ÷ 3,998 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. Grand County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Grand 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/grand-county