County annual report · FIPS 19161
2019 Sac County, IA Power Outage Report
In 2019, customers in Sac County, IA went without power for an average of 0.9 hours, a total of 3,518 customer-hours (Iowa average 2.2 hours). That ranks 88th worst of 99 Iowa counties and 2534th 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 Sac 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 | December 9, 2019 16:15 | December 9, 2019 22:45 | 6h 30m | 757 | 1,292 |
| 2 | January 24, 2019 12:30 | January 24, 2019 14:15 | 1h 45m | 546 | 954 |
| 3 | June 30, 2019 07:00 | June 30, 2019 10:00 | 3h | 209 | 472 |
| 4 | August 8, 2019 01:15 | August 8, 2019 02:45 | 1h 30m | 81 | 102 |
| 5 | November 27, 2019 01:45 | November 27, 2019 03:30 | 1h 45m | 78 | 120 |
| 6 | November 27, 2019 18:45 | November 27, 2019 21:00 | 2h 15m | 38 | 45 |
| 7 | May 27, 2019 15:15 | May 27, 2019 18:15 | 3h | 30 | 58 |
| 8 | October 3, 2019 16:00 | October 3, 2019 17:00 | 1h | 19 | 12 |
| 9 | August 27, 2019 20:30 | August 27, 2019 21:30 | 1h | 18 | 8 |
| 10 | September 16, 2019 17:00 | September 16, 2019 18:00 | 1h | 16 | 16 |
Outage episodes by size in 2019: 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 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 |
| Iowa Lakes Electric Coop | 2018 | 1.8 hrs | 1.06 | 88 min | 0.98 |
| Western Iowa Power Coop | 2018 | 47 min | 0.76 | 47 min | 0.76 |
| 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 89% of Iowa's customers in 2019; 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, 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/sac-county