County annual report · FIPS 19161
2020 Sac County, IA Power Outage Report
In 2020, customers in Sac County, IA went without power for an average of 2.6 hours, a total of 9,980 customer-hours (Iowa average 27.4 hours). That ranks 46th worst of 99 Iowa counties and 2029th of 3,019 nationally.
Compared with IA, the US and 2019
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Sac County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 10, 2020 15:00 | August 11, 2020 22:00 | 1d 7h | 907 | 1,758 |
| 2 | August 18, 2020 18:45 | August 18, 2020 20:30 | 1h 45m | 529 | 399 |
| 3 | June 10, 2020 05:30 | June 10, 2020 20:00 | 14h 30m | 515 | 1,687 |
| 4 | November 10, 2020 10:30 | November 11, 2020 07:00 | 20h 30m | 459 | 1,509 |
| 5 | November 11, 2020 09:45 | November 11, 2020 18:30 | 8h 45m | 392 | 1,801 |
| 6 | May 17, 2020 02:00 | May 17, 2020 03:45 | 1h 45m | 200 | 250 |
| 7 | October 20, 2020 21:30 | October 20, 2020 23:00 | 1h 30m | 184 | 140 |
| 8 | June 1, 2020 06:00 | June 1, 2020 07:00 | 1h | 181 | 158 |
| 9 | July 9, 2020 14:15 | July 9, 2020 15:00 | 45m | 156 | 78 |
| 10 | July 8, 2020 18:30 | July 8, 2020 18:45 | 15m | 155 | 39 |
Outage episodes by size in 2020: 15 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 2020, 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 | 2020 | 18.3 hrs | 1.43 | 82 min | 0.79 |
| Iowa Lakes Electric Coop | 2020 | 1.7 hrs | 1.01 | 48 min | 0.68 |
| 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 91% of Iowa's customers in 2020; 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, 2020, 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/2020/iowa/sac-county