County annual report · FIPS 16057
2021 Latah County, ID Power Outage Report
In 2021, customers in Latah County, ID went without power for an average of 5.7 hours, a total of 101K customer-hours (Idaho average 5.7 hours). That ranks 15th worst of 43 Idaho counties and 1202nd 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 Latah 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 | September 27, 2021 20:00 | September 28, 2021 01:30 | 5h 30m | 3,308 | 3,751 |
| 2 | January 13, 2021 09:30 | January 15, 2021 01:45 | 1d 16h | 2,433 | 16K |
| 3 | May 23, 2021 15:00 | May 23, 2021 23:45 | 8h 45m | 2,201 | 18K |
| 4 | July 11, 2021 04:15 | July 12, 2021 04:00 | 23h 45m | 941 | 14K |
| 5 | September 8, 2021 22:00 | September 9, 2021 14:15 | 16h 15m | 898 | 1,796 |
| 6 | November 15, 2021 21:00 | November 16, 2021 11:00 | 14h | 847 | 2,550 |
| 7 | March 28, 2021 23:00 | March 30, 2021 04:00 | 1d 5h | 624 | 4,139 |
| 8 | December 29, 2021 17:30 | December 29, 2021 23:30 | 6h | 566 | 1,440 |
| 9 | November 13, 2021 04:00 | November 13, 2021 07:00 | 3h | 563 | 442 |
| 10 | October 25, 2021 07:00 | October 25, 2021 13:45 | 6h 45m | 561 | 1,128 |
Outage episodes by size in 2021: 51 reached 100+ customers, 3 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 Latah 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 |
|---|---|---|---|---|---|
| Avista Corp | 2021 | 16.1 hrs | 2.31 | 2.9 hrs | 1.29 |
| Clearwater Power Company | 2018 | 16.6 hrs | 3.16 | 12.0 hrs | 2.91 |
| Bonneville Power Administration | - | - | - | - | - |
| Avista Corp,avista | - | - | - | - | - |
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 ÷ 17,870 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. Latah County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Latah 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/latah-county