County annual report · FIPS 19193
2021 Woodbury County, IA Power Outage Report
In 2021, customers in Woodbury County, IA went without power for an average of 4.1 hours, a total of 105K customer-hours (Iowa average 2.7 hours). That ranks 36th worst of 99 Iowa counties and 1518th 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 Woodbury 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 | June 22, 2021 22:00 | June 22, 2021 23:30 | 1h 30m | 4,652 | 3,493 |
| 2 | August 27, 2021 06:30 | August 27, 2021 23:15 | 16h 45m | 3,457 | 8,263 |
| 3 | December 15, 2021 22:30 | December 17, 2021 20:15 | 1d 21h | 2,576 | 27K |
| 4 | March 27, 2021 14:30 | March 27, 2021 21:00 | 6h 30m | 2,330 | 3,087 |
| 5 | July 23, 2021 15:30 | July 23, 2021 17:45 | 2h 15m | 2,329 | 1,748 |
| 6 | October 28, 2021 02:15 | October 28, 2021 06:30 | 4h 15m | 2,313 | 2,356 |
| 7 | March 24, 2021 18:00 | March 24, 2021 20:30 | 2h 30m | 2,228 | 2,940 |
| 8 | April 2, 2021 23:00 | April 3, 2021 00:30 | 1h 30m | 2,138 | 1,579 |
| 9 | December 10, 2021 21:45 | December 11, 2021 12:45 | 15h | 1,744 | 8,233 |
| 10 | November 11, 2021 15:15 | November 11, 2021 23:45 | 8h 30m | 1,640 | 1,818 |
Outage episodes by size in 2021: 53 reached 100+ customers, 15 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 Woodbury 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 |
| Western Iowa Power Coop | 2018 | 47 min | 0.76 | 47 min | 0.76 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| North West Rural Electric Coop | - | - | - | - | - |
| Woodbury County Rural E C A | - | - | - | - | - |
| City of Anthon - (IA) | - | - | - | - | - |
| City of Sergeant Bluff - (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 ÷ 25,626 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. Woodbury County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Woodbury 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/woodbury-county