County annual report · FIPS 19155
2021 Pottawattamie County, IA Power Outage Report
In 2021, customers in Pottawattamie County, IA went without power for an average of 6.6 hours, a total of 335K customer-hours (Iowa average 2.7 hours). That ranks 21st worst of 99 Iowa counties and 1084th of 2,974 nationally.
Compared with IA, the US and 2020
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Pottawattamie County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 10, 2021 05:15 | July 19, 2021 16:00 | 9d 10h | 12,888 | 189K |
| 2 | December 15, 2021 20:30 | December 19, 2021 12:15 | 3d 15h | 7,608 | 74K |
| 3 | April 9, 2021 00:30 | April 9, 2021 08:00 | 7h 30m | 4,636 | 6,941 |
| 4 | May 29, 2021 13:30 | May 29, 2021 16:15 | 2h 45m | 4,619 | 5,513 |
| 5 | June 3, 2021 06:45 | June 3, 2021 11:30 | 4h 45m | 2,639 | 1,102 |
| 6 | March 10, 2021 15:00 | March 12, 2021 15:15 | 2d | 2,219 | 1,688 |
| 7 | July 30, 2021 19:15 | July 31, 2021 20:45 | 1d 1h | 1,733 | 3,385 |
| 8 | December 15, 2021 12:30 | December 15, 2021 13:00 | 30m | 1,728 | 532 |
| 9 | April 13, 2021 19:30 | April 13, 2021 23:15 | 3h 45m | 1,696 | 3,015 |
| 10 | October 20, 2021 14:30 | October 20, 2021 19:15 | 4h 45m | 1,512 | 1,381 |
Outage episodes by size in 2021: 46 reached 100+ customers, 16 reached 1,000+ customers, 1 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 Pottawattamie County reported on EIA Form 861 for 2021, 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 | 2021 | 1.9 hrs | 1.04 | 75 min | 0.74 |
| Omaha Public Power District | 2021 | 15.4 hrs | 1.40 | 68 min | 0.52 |
| Waverly Municipal Elec Utility | - | - | - | - | - |
| Nishnabotna Valley R E C | - | - | - | - | - |
| Harrison County Rrl Elec Coop | - | - | - | - | - |
| Atlantic Municipal Utilities | - | - | - | - | - |
| City of Shelby - (IA) | - | - | - | - | - |
| City of Neola - (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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 51,132 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. Pottawattamie County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Pottawattamie County, IA annual power outage report, 2021, 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/2021/iowa/pottawattamie-county