County annual report · FIPS 16083
2025 Twin Falls County, ID Power Outage Report
In 2025, customers in Twin Falls County, ID went without power for an average of 1.5 hours, a total of 70K customer-hours (Idaho average 5.6 hours). That ranks 39th worst of 43 Idaho counties and 2605th 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 Twin Falls 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 | December 10, 2025 18:00 | December 10, 2025 19:30 | 1h 30m | 8,381 | 8,385 |
| 2 | September 21, 2025 21:00 | September 21, 2025 22:00 | 1h | 3,090 | 2,321 |
| 3 | April 15, 2025 02:15 | April 15, 2025 10:45 | 8h 30m | 2,315 | 6,964 |
| 4 | July 12, 2025 14:00 | July 12, 2025 15:15 | 1h 15m | 2,111 | 2,639 |
| 5 | October 2, 2025 18:30 | October 2, 2025 21:00 | 2h 30m | 1,753 | 908 |
| 6 | July 20, 2025 13:15 | July 20, 2025 15:30 | 2h 15m | 1,733 | 504 |
| 7 | July 8, 2025 13:15 | July 8, 2025 19:15 | 6h | 1,492 | 1,278 |
| 8 | May 14, 2025 15:45 | May 14, 2025 22:00 | 6h 15m | 1,290 | 1,637 |
| 9 | August 19, 2025 07:45 | August 19, 2025 11:15 | 3h 30m | 1,270 | 4,445 |
| 10 | May 2, 2025 14:15 | May 2, 2025 14:30 | 15m | 1,262 | 316 |
Outage episodes by size in 2025: 58 reached 100+ customers, 13 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 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 |
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 ÷ 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, 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/twin-falls-county