County annual report · FIPS 16081
2021 Teton County, ID Power Outage Report
In 2021, customers in Teton County, ID went without power for an average of 5.5 hours, a total of 9,692 customer-hours (Idaho average 5.7 hours). That ranks 16th worst of 43 Idaho counties and 1245th 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 Teton 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 | May 17, 2021 03:15 | May 17, 2021 04:00 | 45m | 922 | 692 |
| 2 | October 11, 2021 23:45 | October 12, 2021 00:30 | 45m | 476 | 357 |
| 3 | December 26, 2021 16:45 | December 26, 2021 18:15 | 1h 30m | 436 | 545 |
| 4 | October 21, 2021 16:45 | October 21, 2021 20:30 | 3h 45m | 357 | 121 |
| 5 | December 28, 2021 16:30 | December 28, 2021 21:45 | 5h 15m | 294 | 478 |
| 6 | October 12, 2021 16:15 | October 12, 2021 18:00 | 1h 45m | 229 | 308 |
| 7 | July 3, 2021 19:15 | July 4, 2021 04:30 | 9h 15m | 197 | 744 |
| 8 | August 7, 2021 13:15 | August 7, 2021 19:00 | 5h 45m | 184 | 660 |
| 9 | October 19, 2021 03:00 | October 19, 2021 04:00 | 1h | 182 | 176 |
| 10 | August 28, 2021 13:15 | August 28, 2021 18:45 | 5h 30m | 151 | 198 |
Outage episodes by size in 2021: 18 reached 100+ customers, 0 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 Teton 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 ÷ 1,775 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. Teton County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Teton 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/teton-county