County annual report · FIPS 16031
2025 Cassia County, ID Power Outage Report
In 2025, customers in Cassia County, ID went without power for an average of 0.4 hours, a total of 5,886 customer-hours (Idaho average 5.6 hours). That ranks 43rd worst of 43 Idaho counties and 2892nd of 3,000 nationally.
Compared with ID, the US and 2024
Coverage line is EAGLE-I's share of Idaho customers tracked each year.
Biggest outages in Cassia County, 2025
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 24, 2025 02:30 | March 24, 2025 07:15 | 4h 45m | 300 | 1,385 |
| 2 | September 11, 2025 07:45 | September 11, 2025 12:30 | 4h 45m | 235 | 1,013 |
| 3 | October 12, 2025 20:45 | October 13, 2025 01:45 | 5h | 188 | 411 |
| 4 | December 17, 2025 17:15 | December 18, 2025 02:15 | 9h | 188 | 638 |
| 5 | February 18, 2025 05:00 | February 18, 2025 06:45 | 1h 45m | 151 | 146 |
| 6 | October 10, 2025 23:15 | October 11, 2025 04:00 | 4h 45m | 125 | 233 |
| 7 | March 16, 2025 23:00 | March 17, 2025 00:15 | 1h 15m | 94 | 118 |
| 8 | March 18, 2025 14:15 | March 18, 2025 16:45 | 2h 30m | 94 | 122 |
| 9 | March 25, 2025 19:30 | March 25, 2025 20:30 | 1h | 92 | 92 |
| 10 | November 26, 2025 17:15 | November 26, 2025 18:45 | 1h 30m | 89 | 134 |
Outage episodes by size in 2025: 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 Cassia County reported on EIA Form 861 for 2025, 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 |
|---|---|---|---|---|---|
| Idaho Power Co | 2024 | 6.0 hrs | 1.97 | 5.0 hrs | 1.84 |
| United Electric Co-op, Inc - (ID) | 2024 | 50 min | 0.70 | 40 min | 0.43 |
| Raft Rural Elec Coop Inc | - | - | - | - | - |
| City of Burley - (ID) | - | - | - | - | - |
| East End Mutual Elec Co Ltd | - | - | - | - | - |
| City of Albion - (ID) | - | - | - | - | - |
| City of Declo - (ID) | - | - | - | - | - |
| South Side Electric, 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 n/a of Idaho's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 14,726 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. Cassia County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Cassia County, ID annual power outage report, 2025, 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/2025/idaho/cassia-county