County annual report · FIPS 16043
2021 Fremont County, ID Power Outage Report
In 2021, customers in Fremont County, ID went without power for an average of 28.2 hours, a total of 53K customer-hours (Idaho average 5.7 hours). That ranks 7th worst of 43 Idaho counties and 314th of 2,974 nationally.
Compared with ID, the US and 2020
Coverage line is EAGLE-I's share of Idaho customers tracked each year.
Biggest outages in Fremont 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 | August 25, 2021 00:15 | August 25, 2021 02:45 | 2h 30m | 2,392 | 3,655 |
| 2 | January 13, 2021 15:15 | January 13, 2021 16:45 | 1h 30m | 2,390 | 2,395 |
| 3 | September 22, 2021 14:45 | September 22, 2021 22:00 | 7h 15m | 2,087 | 5,708 |
| 4 | May 23, 2021 02:45 | May 23, 2021 06:30 | 3h 45m | 1,893 | 3,004 |
| 5 | July 16, 2021 02:00 | July 16, 2021 07:45 | 5h 45m | 1,759 | 4,819 |
| 6 | February 3, 2021 11:00 | February 3, 2021 21:30 | 10h 30m | 1,512 | 4,240 |
| 7 | April 10, 2021 22:15 | April 11, 2021 05:30 | 7h 15m | 1,278 | 3,603 |
| 8 | February 10, 2021 09:45 | February 10, 2021 12:00 | 2h 15m | 1,140 | 2,565 |
| 9 | July 29, 2021 21:15 | July 29, 2021 23:15 | 2h | 975 | 1,347 |
| 10 | September 18, 2021 21:45 | September 19, 2021 00:30 | 2h 45m | 927 | 2,039 |
Outage episodes by size in 2021: 37 reached 100+ customers, 8 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 Fremont 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 |
| Fall River Rural Elec Coop Inc | 2021 | 71 min | 0.61 | 57 min | 0.50 |
| Bonneville Power Administration | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 90% of Idaho's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 1,866 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. Fremont County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Fremont County, ID 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/idaho/fremont-county