County annual report · FIPS 19149
2021 Plymouth County, IA Power Outage Report
In 2021, customers in Plymouth County, IA went without power for an average of 1.9 hours, a total of 16K customer-hours (Iowa average 2.7 hours). That ranks 66th worst of 99 Iowa counties and 2285th 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 Plymouth 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 | December 15, 2021 22:45 | December 17, 2021 14:15 | 1d 15h | 1,387 | 6,270 |
| 2 | May 18, 2021 23:30 | May 19, 2021 00:15 | 45m | 552 | 407 |
| 3 | January 11, 2021 17:15 | January 11, 2021 17:45 | 30m | 469 | 235 |
| 4 | January 18, 2021 15:00 | January 18, 2021 16:15 | 1h 15m | 425 | 425 |
| 5 | February 16, 2021 10:30 | February 16, 2021 13:00 | 2h 30m | 209 | 212 |
| 6 | June 19, 2021 14:30 | June 19, 2021 16:15 | 1h 45m | 206 | 361 |
| 7 | April 6, 2021 16:15 | April 6, 2021 16:30 | 15m | 124 | 31 |
| 8 | March 15, 2021 06:15 | March 15, 2021 13:45 | 7h 30m | 105 | 303 |
| 9 | May 9, 2021 00:15 | May 10, 2021 12:45 | 1d 12h | 102 | 3,301 |
| 10 | May 4, 2021 16:15 | May 4, 2021 16:45 | 30m | 99 | 26 |
Outage episodes by size in 2021: 9 reached 100+ customers, 1 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 Plymouth 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 |
| Iowa Lakes Electric Coop | 2021 | 75 min | 0.84 | 65 min | 0.80 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| North West Rural Electric Coop | - | - | - | - | - |
| Woodbury County Rural E C A | - | - | - | - | - |
| City of Akron - (IA) | - | - | - | - | - |
| City of Hinton | - | - | - | - | - |
| City of Remsen - (IA) | - | - | - | - | - |
| Town of Westfield - (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 ÷ 8,581 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. Plymouth County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Plymouth 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/plymouth-county