County annual report · FIPS 19161
2015 Sac County, IA Power Outage Report
In 2015, customers in Sac County, IA went without power for an average of 1.2 hours, a total of 4,588 customer-hours (Iowa average 1.1 hours). That ranks 42nd worst of 99 Iowa counties and 1664th 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 Sac 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 | November 26, 2015 18:00 | November 27, 2015 11:15 | 17h 15m | 544 | 3,037 |
| 2 | October 12, 2015 21:30 | October 13, 2015 00:30 | 3h | 535 | 810 |
| 3 | November 17, 2015 14:30 | November 17, 2015 15:30 | 1h | 535 | 378 |
| 4 | October 23, 2015 12:30 | October 23, 2015 15:15 | 2h 45m | 42 | 96 |
| 5 | November 27, 2015 20:45 | November 27, 2015 21:15 | 30m | 18 | 9 |
| 6 | August 17, 2015 11:30 | August 17, 2015 13:30 | 2h | 15 | 20 |
| 7 | September 21, 2015 20:15 | September 21, 2015 21:30 | 1h 15m | 11 | 14 |
| 8 | December 28, 2015 18:45 | December 28, 2015 21:30 | 2h 45m | 10 | 25 |
| 9 | November 2, 2015 14:45 | November 2, 2015 15:15 | 30m | 8 | 2 |
| 10 | November 16, 2015 19:15 | November 16, 2015 20:00 | 45m | 8 | 6 |
Outage episodes by size in 2015: 3 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 Sac 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 |
| Iowa Lakes Electric Coop | 2015 | 62 min | 0.53 | 53 min | 0.50 |
| Western Iowa Power Coop | 2015 | 36 min | 0.48 | 36 min | 0.48 |
| North West Rural Electric Coop | - | - | - | - | - |
| Raccoon Valley Electric Cooperative | - | - | - | - | - |
| Calhoun County Elec Coop Assn | - | - | - | - | - |
| City of Auburn - (IA) | - | - | - | - | - |
| City of Lake View - (IA) | - | - | - | - | - |
| City of Wall Lake - (IA) | - | - | - | - | - |
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 ÷ 3,895 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. Sac County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Sac 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/sac-county