County annual report · FIPS 19127
2021 Marshall County, IA Power Outage Report
In 2021, customers in Marshall County, IA went without power for an average of 1.6 hours, a total of 25K customer-hours (Iowa average 2.7 hours). That ranks 76th worst of 99 Iowa counties and 2424th 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 Marshall 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 6, 2021 09:15 | December 6, 2021 12:45 | 3h 30m | 992 | 364 |
| 2 | December 28, 2021 20:30 | December 28, 2021 22:00 | 1h 30m | 866 | 695 |
| 3 | March 18, 2021 07:15 | March 18, 2021 10:15 | 3h | 844 | 1,781 |
| 4 | December 16, 2021 01:00 | December 17, 2021 00:15 | 23h 15m | 838 | 3,225 |
| 5 | September 30, 2021 10:30 | September 30, 2021 21:15 | 10h 45m | 822 | 3,115 |
| 6 | October 24, 2021 22:45 | October 25, 2021 21:00 | 22h 15m | 809 | 1,912 |
| 7 | December 11, 2021 08:30 | December 11, 2021 12:15 | 3h 45m | 794 | 2,185 |
| 8 | March 8, 2021 14:00 | March 8, 2021 15:30 | 1h 30m | 788 | 733 |
| 9 | July 15, 2021 02:00 | July 15, 2021 05:45 | 3h 45m | 461 | 536 |
| 10 | June 24, 2021 14:00 | June 24, 2021 16:15 | 2h 15m | 428 | 400 |
Outage episodes by size in 2021: 29 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 Marshall 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 |
|---|---|---|---|---|---|
| Consumers Energy Coop - (IA) | 2021 | 1.8 hrs | 1.39 | 1.8 hrs | 1.39 |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Midland Power Coop | - | - | - | - | - |
| Grundy County Rural Elec Coop | - | - | - | - | - |
| City of State Center - (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 ÷ 15,945 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. Marshall County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Marshall 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/marshall-county