County annual report · FIPS 16069
2021 Nez Perce County, ID Power Outage Report
In 2021, customers in Nez Perce County, ID went without power for an average of 3.2 hours, a total of 65K customer-hours (Idaho average 5.7 hours). That ranks 28th worst of 43 Idaho counties and 1763rd 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 Nez Perce 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 | March 10, 2021 01:15 | March 10, 2021 05:00 | 3h 45m | 6,462 | 4,290 |
| 2 | September 11, 2021 21:00 | September 12, 2021 08:30 | 11h 30m | 2,165 | 9,727 |
| 3 | July 1, 2021 05:00 | July 1, 2021 12:45 | 7h 45m | 1,646 | 2,010 |
| 4 | October 1, 2021 16:45 | October 1, 2021 19:30 | 2h 45m | 1,372 | 1,772 |
| 5 | January 13, 2021 13:00 | January 14, 2021 02:15 | 13h 15m | 1,168 | 2,532 |
| 6 | May 5, 2021 11:30 | May 5, 2021 16:00 | 4h 30m | 729 | 1,987 |
| 7 | March 10, 2021 15:45 | March 10, 2021 16:15 | 30m | 703 | 194 |
| 8 | August 21, 2021 03:00 | August 21, 2021 17:45 | 14h 45m | 702 | 1,305 |
| 9 | November 16, 2021 03:15 | November 16, 2021 11:00 | 7h 45m | 529 | 1,270 |
| 10 | March 29, 2021 05:00 | March 30, 2021 11:30 | 1d 6h | 496 | 2,899 |
Outage episodes by size in 2021: 35 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 Nez Perce 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 ÷ 19,938 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. Nez Perce County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Nez Perce 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/nez-perce-county