County annual report · FIPS 16051
2025 Jefferson County, ID Power Outage Report
In 2025, customers in Jefferson County, ID went without power for an average of 6.5 hours, a total of 58K customer-hours (Idaho average 5.6 hours). That ranks 23rd worst of 43 Idaho counties and 1225th 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 Jefferson 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 | June 20, 2025 00:15 | June 20, 2025 22:45 | 22h 30m | 3,219 | 8,060 |
| 2 | February 25, 2025 13:15 | February 25, 2025 23:00 | 9h 45m | 2,672 | 5,332 |
| 3 | October 3, 2025 05:15 | October 3, 2025 09:15 | 4h | 2,333 | 9,330 |
| 4 | February 17, 2025 16:00 | February 17, 2025 18:45 | 2h 45m | 2,163 | 1,112 |
| 5 | November 20, 2025 21:00 | November 21, 2025 05:15 | 8h 15m | 1,873 | 788 |
| 6 | September 17, 2025 15:45 | September 18, 2025 06:30 | 14h 45m | 1,863 | 5,903 |
| 7 | May 29, 2025 14:15 | May 30, 2025 05:15 | 15h | 1,838 | 1,903 |
| 8 | April 28, 2025 15:15 | April 28, 2025 20:45 | 5h 30m | 1,836 | 2,192 |
| 9 | October 26, 2025 06:45 | October 26, 2025 10:30 | 3h 45m | 728 | 367 |
| 10 | February 2, 2025 06:30 | February 2, 2025 16:15 | 9h 45m | 550 | 2,262 |
Outage episodes by size in 2025: 38 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 Jefferson 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 ÷ 8,995 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. Jefferson County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Jefferson 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/jefferson-county