County annual report · FIPS 16057
2018 Latah County, ID Power Outage Report
In 2018, customers in Latah County, ID went without power for an average of 3.5 hours, a total of 63K customer-hours (Idaho average 2.0 hours). That ranks 20th worst of 44 Idaho counties and 1355th 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 Latah 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 | December 24, 2018 13:15 | December 24, 2018 22:00 | 8h 45m | 2,613 | 4,054 |
| 2 | May 24, 2018 07:15 | May 24, 2018 09:30 | 2h 15m | 2,569 | 5,780 |
| 3 | July 14, 2018 03:00 | July 14, 2018 04:15 | 1h 15m | 1,720 | 1,211 |
| 4 | October 2, 2018 17:15 | October 3, 2018 12:45 | 19h 30m | 1,239 | 18K |
| 5 | August 27, 2018 07:00 | August 27, 2018 15:45 | 8h 45m | 1,018 | 2,192 |
| 6 | December 12, 2018 00:30 | December 12, 2018 04:45 | 4h 15m | 705 | 2,252 |
| 7 | August 11, 2018 06:30 | August 11, 2018 14:00 | 7h 30m | 695 | 5,046 |
| 8 | February 5, 2018 16:15 | February 5, 2018 22:30 | 6h 15m | 673 | 383 |
| 9 | September 6, 2018 10:15 | September 6, 2018 16:45 | 6h 30m | 536 | 730 |
| 10 | December 12, 2018 07:45 | December 12, 2018 20:00 | 12h 15m | 487 | 1,393 |
Outage episodes by size in 2018: 36 reached 100+ customers, 5 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 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 |
|---|---|---|---|---|---|
| Avista Corp | 2018 | 2.6 hrs | 0.89 | 2.2 hrs | 0.81 |
| 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 91% of Idaho's customers in 2018; 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, 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/latah-county