County annual report · FIPS 19167
2015 Sioux County, IA Power Outage Report
In 2015, customers in Sioux County, IA went without power for an average of 0.2 hours, a total of 3,231 customer-hours (Iowa average 1.1 hours). That ranks 93rd worst of 99 Iowa counties and 2264th of 2,484 nationally.
Compared with IA, the US
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Sioux 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 | January 4, 2015 00:30 | January 4, 2015 02:15 | 1h 45m | 1,770 | 884 |
| 2 | September 19, 2015 07:15 | September 19, 2015 10:00 | 2h 45m | 723 | 632 |
| 3 | October 4, 2015 16:00 | October 4, 2015 16:30 | 30m | 484 | 242 |
| 4 | October 2, 2015 22:30 | October 2, 2015 22:45 | 15m | 362 | 91 |
| 5 | August 17, 2015 04:15 | August 17, 2015 08:30 | 4h 15m | 339 | 363 |
| 6 | September 8, 2015 17:00 | September 8, 2015 20:00 | 3h | 288 | 225 |
| 7 | October 20, 2015 18:45 | October 21, 2015 02:00 | 7h 15m | 65 | 35 |
| 8 | January 4, 2015 22:00 | January 5, 2015 03:15 | 5h 15m | 62 | 106 |
| 9 | June 22, 2015 10:45 | June 22, 2015 15:00 | 4h 15m | 51 | 188 |
| 10 | October 22, 2015 14:30 | October 22, 2015 15:15 | 45m | 47 | 27 |
Outage episodes by size in 2015: 6 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 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 |
|---|---|---|---|---|---|
| MidAmerican Energy Co | 2015 | 2.2 hrs | 1.05 | 87 min | 0.88 |
| Lyon Rural Electric Coop | 2015 | 52 min | 1.10 | 52 min | 1.10 |
| 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 2015; 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, 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/iowa/sioux-county