County annual report · FIPS 16083
2018 Twin Falls County, ID Power Outage Report
In 2018, customers in Twin Falls County, ID went without power for an average of 1.5 hours, a total of 71K customer-hours (Idaho average 2.0 hours). That ranks 31st worst of 44 Idaho counties and 2067th 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 Twin Falls 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 | March 14, 2018 15:45 | March 14, 2018 23:00 | 7h 15m | 3,714 | 4,140 |
| 2 | March 2, 2018 13:00 | March 2, 2018 15:15 | 2h 15m | 3,078 | 2,571 |
| 3 | October 4, 2018 21:00 | October 4, 2018 22:45 | 1h 45m | 2,012 | 2,910 |
| 4 | November 13, 2018 17:15 | November 13, 2018 18:00 | 45m | 2,000 | 1,500 |
| 5 | January 17, 2018 15:45 | January 17, 2018 21:00 | 5h 15m | 1,843 | 1,833 |
| 6 | July 17, 2018 22:45 | July 17, 2018 23:15 | 30m | 1,625 | 813 |
| 7 | December 8, 2018 06:45 | December 8, 2018 07:30 | 45m | 1,399 | 1,049 |
| 8 | August 20, 2018 13:45 | August 20, 2018 17:30 | 3h 45m | 1,396 | 3,668 |
| 9 | May 30, 2018 22:30 | May 30, 2018 23:30 | 1h | 1,378 | 504 |
| 10 | December 6, 2018 06:15 | December 6, 2018 09:15 | 3h | 1,273 | 3,819 |
Outage episodes by size in 2018: 67 reached 100+ customers, 12 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 Twin Falls 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 |
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 ÷ 46,267 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. Twin Falls County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Twin Falls 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/twin-falls-county