County annual report · FIPS 16031
2018 Cassia County, ID Power Outage Report
In 2018, customers in Cassia County, ID went without power for an average of 1.2 hours, a total of 17K customer-hours (Idaho average 2.0 hours). That ranks 36th worst of 44 Idaho counties and 2241st 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 Cassia 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 | June 13, 2018 08:15 | June 13, 2018 14:30 | 6h 15m | 1,671 | 9,999 |
| 2 | August 13, 2018 16:30 | August 13, 2018 17:45 | 1h 15m | 1,356 | 1,695 |
| 3 | August 22, 2018 09:00 | August 22, 2018 11:15 | 2h 15m | 938 | 1,791 |
| 4 | July 25, 2018 08:15 | July 25, 2018 09:45 | 1h 30m | 377 | 162 |
| 5 | October 10, 2018 22:30 | October 11, 2018 02:30 | 4h | 242 | 668 |
| 6 | February 18, 2018 16:15 | February 18, 2018 23:15 | 7h | 221 | 1,116 |
| 7 | June 14, 2018 22:30 | June 14, 2018 23:30 | 1h | 127 | 127 |
| 8 | August 15, 2018 22:30 | August 15, 2018 23:45 | 1h 15m | 117 | 136 |
| 9 | October 4, 2018 19:45 | October 4, 2018 22:15 | 2h 30m | 107 | 150 |
| 10 | January 10, 2018 14:30 | January 10, 2018 15:45 | 1h 15m | 103 | 87 |
Outage episodes by size in 2018: 10 reached 100+ customers, 2 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 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 |
|---|---|---|---|---|---|
| Idaho Power Co | 2018 | 2.3 hrs | 1.01 | 2.3 hrs | 1.00 |
| Raft Rural Elec Coop Inc | - | - | - | - | - |
| City of Burley - (ID) | - | - | - | - | - |
| East End Mutual Elec Co Ltd | - | - | - | - | - |
| United Electric Co-op, Inc - (ID) | - | - | - | - | - |
| 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 91% of Idaho's customers in 2018; 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, 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/cassia-county