County annual report · FIPS 16077
2021 Power County, ID Power Outage Report
In 2021, customers in Power County, ID went without power for an average of 5.2 hours, a total of 20K customer-hours (Idaho average 5.7 hours). That ranks 19th worst of 43 Idaho counties and 1299th 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 Power 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 | October 4, 2021 17:15 | October 4, 2021 17:30 | 15m | 3,500 | 875 |
| 2 | September 9, 2021 02:30 | September 9, 2021 04:30 | 2h | 3,269 | 5,958 |
| 3 | December 15, 2021 08:15 | December 15, 2021 14:00 | 5h 45m | 3,225 | 4,192 |
| 4 | August 22, 2021 05:15 | August 22, 2021 09:00 | 3h 45m | 1,745 | 2,774 |
| 5 | February 23, 2021 15:30 | February 23, 2021 16:30 | 1h | 1,675 | 1,675 |
| 6 | October 6, 2021 14:30 | October 6, 2021 18:00 | 3h 30m | 1,660 | 793 |
| 7 | June 9, 2021 22:15 | June 9, 2021 23:30 | 1h 15m | 282 | 220 |
| 8 | June 18, 2021 14:45 | June 18, 2021 21:30 | 6h 45m | 231 | 639 |
| 9 | March 20, 2021 13:30 | March 20, 2021 15:15 | 1h 45m | 215 | 246 |
| 10 | August 17, 2021 00:30 | August 17, 2021 01:45 | 1h 15m | 173 | 216 |
Outage episodes by size in 2021: 21 reached 100+ customers, 6 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 Power 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 |
|---|---|---|---|---|---|
| PacifiCorp | 2021 | 4.3 hrs | 1.86 | 2.0 hrs | 1.19 |
| Idaho Power Co | 2021 | 3.1 hrs | 1.42 | 2.6 hrs | 1.25 |
| Bonneville Power Administration | - | - | - | - | - |
| Raft Rural Elec 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 90% of Idaho's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 3,842 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. Power County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Power 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/power-county