County annual report · FIPS 16081
2025 Teton County, ID Power Outage Report
In 2025, customers in Teton County, ID went without power for an average of 12.5 hours, a total of 22K customer-hours (Idaho average 5.6 hours). That ranks 16th worst of 43 Idaho counties and 625th of 3,000 nationally.
Compared with ID, the US and 2024
Coverage line is EAGLE-I's share of Idaho customers tracked each year.
Biggest outages in Teton County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 20, 2025 12:30 | January 20, 2025 20:15 | 7h 45m | 2,613 | 5,922 |
| 2 | January 9, 2025 18:00 | January 9, 2025 18:15 | 15m | 1,209 | 302 |
| 3 | March 5, 2025 20:00 | March 5, 2025 20:45 | 45m | 759 | 569 |
| 4 | September 1, 2025 13:45 | September 1, 2025 17:30 | 3h 45m | 347 | 1,013 |
| 5 | January 16, 2025 15:45 | January 16, 2025 20:45 | 5h | 334 | 306 |
| 6 | September 10, 2025 07:15 | September 10, 2025 13:30 | 6h 15m | 275 | 622 |
| 7 | November 7, 2025 03:30 | November 7, 2025 05:45 | 2h 15m | 238 | 536 |
| 8 | February 23, 2025 21:45 | February 23, 2025 23:30 | 1h 45m | 230 | 346 |
| 9 | June 30, 2025 15:30 | June 30, 2025 20:00 | 4h 30m | 225 | 614 |
| 10 | April 3, 2025 16:15 | April 3, 2025 16:30 | 15m | 209 | 52 |
Outage episodes by size in 2025: 20 reached 100+ customers, 2 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 2025, 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 | 2024 | 4.6 hrs | 1.67 | 2.0 hrs | 1.11 |
| Fall River Rural Elec Coop Inc | 2024 | 14 min | 0.11 | 10 min | 0.08 |
| 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 n/a of Idaho's customers in 2025; 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, 2025, 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/2025/idaho/teton-county