County annual report · FIPS 19167
2023 Sioux County, IA Power Outage Report
In 2023, customers in Sioux County, IA went without power for an average of 0.6 hours, a total of 9,737 customer-hours (Iowa average 2.0 hours). That ranks 95th worst of 99 Iowa counties and 2802nd of 2,977 nationally.
Compared with IA, the US and 2022
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Sioux County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 12, 2023 10:15 | July 12, 2023 14:00 | 3h 45m | 768 | 773 |
| 2 | July 10, 2023 22:15 | July 11, 2023 00:15 | 2h | 764 | 765 |
| 3 | September 7, 2023 15:45 | September 7, 2023 16:00 | 15m | 381 | 95 |
| 4 | December 7, 2023 11:45 | December 7, 2023 13:15 | 1h 30m | 361 | 542 |
| 5 | July 3, 2023 22:45 | July 4, 2023 00:15 | 1h 30m | 301 | 450 |
| 6 | August 31, 2023 16:30 | August 31, 2023 21:45 | 5h 15m | 246 | 593 |
| 7 | December 25, 2023 18:00 | December 26, 2023 13:45 | 19h 45m | 185 | 504 |
| 8 | September 1, 2023 22:00 | September 1, 2023 23:30 | 1h 30m | 177 | 266 |
| 9 | March 16, 2023 21:45 | March 17, 2023 14:00 | 16h 15m | 173 | 404 |
| 10 | June 3, 2023 17:30 | June 5, 2023 13:45 | 1d 20h | 173 | 530 |
Outage episodes by size in 2023: 11 reached 100+ customers, 0 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 Sioux County reported on EIA Form 861 for 2023, 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 |
|---|---|---|---|---|---|
| MidAmerican Energy Co | 2023 | 2.8 hrs | 1.13 | 78 min | 0.83 |
| Lyon Rural Electric Coop | 2018 | 34 min | 0.38 | 34 min | 0.38 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Interstate Power and Light Co | - | - | - | - | - |
| North West Rural Electric Coop | - | - | - | - | - |
| City of Alton | - | - | - | - | - |
| City of Hawarden - (IA) | - | - | - | - | - |
| City of Orange City - (IA) | - | - | - | - | - |
| City of Sioux Center | - | - | - | - | - |
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 Iowa's customers in 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 16,993 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. Sioux County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Sioux County, IA annual power outage report, 2023, 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/2023/iowa/sioux-county