County annual report · FIPS 19167
2019 Sioux County, IA Power Outage Report
In 2019, customers in Sioux County, IA went without power for an average of 3.4 hours, a total of 58K customer-hours (Iowa average 2.2 hours). That ranks 27th worst of 99 Iowa counties and 1507th of 2,945 nationally.
Compared with IA, the US and 2018
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Sioux County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 10, 2019 23:00 | April 13, 2019 20:00 | 2d 21h | 4,636 | 37K |
| 2 | April 25, 2019 21:45 | April 25, 2019 22:00 | 15m | 945 | 236 |
| 3 | September 15, 2019 18:00 | September 15, 2019 18:45 | 45m | 762 | 569 |
| 4 | January 28, 2019 07:15 | January 28, 2019 16:00 | 8h 45m | 570 | 1,015 |
| 5 | July 4, 2019 08:15 | July 4, 2019 12:15 | 4h | 533 | 871 |
| 6 | February 7, 2019 20:00 | February 7, 2019 22:45 | 2h 45m | 435 | 809 |
| 7 | May 15, 2019 16:30 | May 16, 2019 12:30 | 20h | 387 | 642 |
| 8 | May 24, 2019 15:15 | May 24, 2019 16:15 | 1h | 324 | 324 |
| 9 | October 1, 2019 00:30 | October 1, 2019 02:00 | 1h 30m | 249 | 228 |
| 10 | March 14, 2019 08:15 | March 14, 2019 22:00 | 13h 45m | 245 | 1,010 |
Outage episodes by size in 2019: 20 reached 100+ customers, 1 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 2019, 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 | 2018 | 1.9 hrs | 1.18 | 75 min | 0.96 |
| 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 89% of Iowa's customers in 2019; 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, 2019, 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/2019/iowa/sioux-county