County annual report · FIPS 16023
2021 Butte County, ID Power Outage Report
In 2021, customers in Butte County, ID went without power for an average of 63.7 hours, a total of 5,161 customer-hours (Idaho average 5.7 hours). That ranks 2nd worst of 43 Idaho counties and 130th 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 Butte 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 | November 19, 2021 16:00 | November 19, 2021 17:15 | 1h 15m | 398 | 308 |
| 2 | September 30, 2021 07:45 | September 30, 2021 13:45 | 6h | 388 | 2,328 |
| 3 | April 30, 2021 22:15 | May 1, 2021 00:45 | 2h 30m | 297 | 717 |
| 4 | November 9, 2021 19:15 | November 9, 2021 19:30 | 15m | 176 | 44 |
| 5 | March 29, 2021 07:45 | March 29, 2021 17:00 | 9h 15m | 139 | 865 |
| 6 | March 21, 2021 23:45 | March 22, 2021 00:45 | 1h | 130 | 64 |
| 7 | June 10, 2021 20:45 | June 10, 2021 23:30 | 2h 45m | 76 | 153 |
| 8 | July 16, 2021 14:15 | July 16, 2021 15:15 | 1h | 76 | 76 |
| 9 | July 29, 2021 22:15 | July 30, 2021 01:00 | 2h 45m | 55 | 126 |
| 10 | October 8, 2021 02:00 | October 8, 2021 05:45 | 3h 45m | 55 | 69 |
Outage episodes by size in 2021: 6 reached 100+ customers, 0 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 Butte 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 |
| Bonneville Power Administration | - | - | - | - | - |
| Lost 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 90% of Idaho's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 81 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. Butte County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Butte 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/butte-county