County annual report · FIPS 16051
2018 Jefferson County, ID Power Outage Report
In 2018, customers in Jefferson County, ID went without power for an average of 4.2 hours, a total of 38K customer-hours (Idaho average 2.0 hours). That ranks 18th worst of 44 Idaho counties and 1209th of 2,798 nationally.
Compared with ID, the US and 2017
Coverage line is EAGLE-I's share of Idaho customers tracked each year.
Biggest outages in Jefferson County, 2018
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 5, 2018 21:30 | August 6, 2018 04:00 | 6h 30m | 2,531 | 4,234 |
| 2 | November 18, 2018 15:45 | November 18, 2018 19:15 | 3h 30m | 2,149 | 4,843 |
| 3 | April 24, 2018 12:00 | April 24, 2018 12:45 | 45m | 959 | 403 |
| 4 | April 17, 2018 06:45 | April 17, 2018 21:45 | 15h | 908 | 8,335 |
| 5 | November 12, 2018 15:30 | November 12, 2018 19:45 | 4h 15m | 571 | 148 |
| 6 | April 2, 2018 17:45 | April 3, 2018 03:30 | 9h 45m | 544 | 1,645 |
| 7 | July 24, 2018 14:45 | July 24, 2018 20:15 | 5h 30m | 458 | 1,258 |
| 8 | August 29, 2018 22:15 | August 30, 2018 03:15 | 5h | 429 | 355 |
| 9 | August 27, 2018 18:30 | August 27, 2018 21:45 | 3h 15m | 427 | 120 |
| 10 | September 6, 2018 14:00 | September 6, 2018 16:30 | 2h 30m | 387 | 942 |
Outage episodes by size in 2018: 32 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 Jefferson County reported on EIA Form 861 for 2018, 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 | 2018 | 3.2 hrs | 1.62 | 2.0 hrs | 1.25 |
| Fall River Rural Elec Coop Inc | 2018 | 4.6 hrs | 2.31 | 4.2 hrs | 2.11 |
| 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 91% of Idaho's customers in 2018; 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, 2018, 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/2018/idaho/jefferson-county