County annual report · FIPS 16083
2015 Twin Falls County, ID Power Outage Report
In 2015, customers in Twin Falls County, ID went without power for an average of 0.7 hours, a total of 33K customer-hours (Idaho average 2.6 hours). That ranks 16th worst of 31 Idaho counties and 1934th of 2,484 nationally.
Compared with ID, the US
Coverage line is EAGLE-I's share of Idaho customers tracked each year.
Biggest outages in Twin Falls County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 11, 2015 08:00 | August 11, 2015 13:45 | 5h 45m | 7,107 | 16K |
| 2 | August 26, 2015 21:45 | August 26, 2015 22:45 | 1h | 5,624 | 3,424 |
| 3 | August 10, 2015 21:15 | August 10, 2015 23:00 | 1h 45m | 2,213 | 1,691 |
| 4 | September 25, 2015 17:00 | September 25, 2015 17:15 | 15m | 1,979 | 495 |
| 5 | August 14, 2015 23:15 | August 15, 2015 09:30 | 10h 15m | 1,463 | 2,455 |
| 6 | August 14, 2015 07:00 | August 14, 2015 12:30 | 5h 30m | 1,414 | 889 |
| 7 | October 3, 2015 19:00 | October 3, 2015 21:15 | 2h 15m | 1,239 | 1,194 |
| 8 | August 8, 2015 00:30 | August 8, 2015 02:00 | 1h 30m | 1,178 | 1,767 |
| 9 | October 2, 2015 01:45 | October 2, 2015 04:30 | 2h 45m | 1,169 | 520 |
| 10 | August 5, 2015 18:00 | August 5, 2015 19:00 | 1h | 689 | 361 |
Outage episodes by size in 2015: 15 reached 100+ customers, 9 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 2015, 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 | 2015 | 4.8 hrs | 1.76 | 4.4 hrs | 1.64 |
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 2015; 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, 2015, 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/2015/idaho/twin-falls-county