County annual report · FIPS 16083
2020 Twin Falls County, ID Power Outage Report
In 2020, customers in Twin Falls County, ID went without power for an average of 3.1 hours, a total of 142K customer-hours (Idaho average 5.1 hours). That ranks 30th worst of 44 Idaho counties and 1850th of 3,019 nationally.
Compared with ID, the US and 2019
Coverage line is EAGLE-I's share of Idaho customers tracked each year.
Biggest outages in Twin Falls County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 16, 2020 20:15 | January 16, 2020 21:45 | 1h 30m | 12,744 | 6,247 |
| 2 | May 11, 2020 23:45 | May 12, 2020 03:00 | 3h 15m | 5,893 | 3,684 |
| 3 | August 19, 2020 08:30 | August 19, 2020 15:30 | 7h | 4,458 | 29K |
| 4 | August 20, 2020 02:15 | August 20, 2020 06:30 | 4h 15m | 4,418 | 14K |
| 5 | September 8, 2020 02:30 | September 9, 2020 05:00 | 1d 2h | 3,412 | 15K |
| 6 | April 12, 2020 04:45 | April 12, 2020 09:00 | 4h 15m | 1,807 | 1,628 |
| 7 | August 3, 2020 22:30 | August 4, 2020 00:30 | 2h | 1,594 | 1,599 |
| 8 | July 24, 2020 03:15 | July 24, 2020 08:45 | 5h 30m | 1,508 | 6,822 |
| 9 | December 5, 2020 03:45 | December 5, 2020 05:00 | 1h 15m | 1,443 | 1,440 |
| 10 | June 19, 2020 15:45 | June 19, 2020 16:15 | 30m | 1,432 | 716 |
Outage episodes by size in 2020: 76 reached 100+ customers, 18 reached 1,000+ customers, 1 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 2020, 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 | 2020 | 3.3 hrs | 1.10 | 2.7 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 95% of Idaho's customers in 2020; 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, 2020, 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/2020/idaho/twin-falls-county