County annual report · FIPS 16059
2020 Lemhi County, ID Power Outage Report
In 2020, customers in Lemhi County, ID went without power for an average of 25.1 hours, a total of 94K customer-hours (Idaho average 5.1 hours). That ranks 8th worst of 44 Idaho counties and 341st of 3,019 nationally.
Compared with ID, the US and 2019
Coverage line is EAGLE-I's share of Idaho customers tracked each year.
Biggest outages in Lemhi County, 2020
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 12, 2020 05:15 | May 12, 2020 06:00 | 45m | 7,279 | 3,643 |
| 2 | August 5, 2020 06:15 | August 5, 2020 11:00 | 4h 45m | 6,839 | 20K |
| 3 | July 22, 2020 07:00 | July 22, 2020 07:15 | 15m | 5,098 | 1,275 |
| 4 | July 22, 2020 08:00 | July 22, 2020 10:15 | 2h 15m | 5,098 | 7,549 |
| 5 | July 22, 2020 11:15 | July 22, 2020 14:00 | 2h 45m | 5,098 | 6,518 |
| 6 | October 6, 2020 06:15 | October 6, 2020 10:45 | 4h 30m | 5,094 | 15K |
| 7 | October 27, 2020 06:15 | October 27, 2020 09:00 | 2h 45m | 4,446 | 11K |
| 8 | January 16, 2020 22:00 | January 16, 2020 22:45 | 45m | 3,726 | 1,093 |
| 9 | May 15, 2020 20:30 | May 15, 2020 22:45 | 2h 15m | 2,105 | 2,661 |
| 10 | September 28, 2020 16:30 | September 28, 2020 17:15 | 45m | 1,330 | 998 |
Outage episodes by size in 2020: 27 reached 100+ customers, 13 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 Lemhi County reported on EIA Form 861 for 2020, 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 |
|---|---|---|---|---|---|
| Idaho Power Co | 2020 | 3.3 hrs | 1.10 | 2.7 hrs | 1.00 |
| Salmon River Electric Coop Inc | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 95% of Idaho's customers in 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 3,727 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. Lemhi County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Lemhi County, ID annual power outage report, 2020, 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/2020/idaho/lemhi-county