County annual report · FIPS 19053
2025 Decatur County, IA Power Outage Report
In 2025, customers in Decatur County, IA went without power for an average of 2.6 hours, a total of 8,561 customer-hours (Iowa average 2.9 hours). That ranks 59th worst of 99 Iowa counties and 2218th of 3,000 nationally.
Compared with IA, the US and 2024
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Decatur County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 29, 2025 02:30 | April 29, 2025 12:15 | 9h 45m | 620 | 1,410 |
| 2 | June 28, 2025 00:45 | June 30, 2025 15:15 | 2d 14h | 619 | 533 |
| 3 | August 22, 2025 20:00 | August 23, 2025 01:45 | 5h 45m | 551 | 1,856 |
| 4 | August 20, 2025 13:45 | August 20, 2025 16:45 | 3h | 211 | 556 |
| 5 | September 17, 2025 21:45 | September 18, 2025 01:45 | 4h | 136 | 316 |
| 6 | July 26, 2025 18:30 | July 26, 2025 20:45 | 2h 15m | 127 | 222 |
| 7 | July 23, 2025 00:15 | July 23, 2025 01:15 | 1h | 126 | 126 |
| 8 | March 5, 2025 07:15 | March 5, 2025 16:15 | 9h | 114 | 533 |
| 9 | October 28, 2025 19:15 | October 29, 2025 00:45 | 5h 30m | 114 | 311 |
| 10 | June 24, 2025 09:45 | June 24, 2025 18:30 | 8h 45m | 102 | 328 |
Outage episodes by size in 2025: 10 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 Decatur County reported on EIA Form 861 for 2025, 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 |
|---|---|---|---|---|---|
| Southwest Iowa Rural Elec Coop | 2018 | 2.4 hrs | 1.69 | 1.6 hrs | 1.21 |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Grundy Electric Coop, Inc | - | - | - | - | - |
| Clarke Electric Coop Inc - (IA) | - | - | - | - | - |
| City of Lamoni - (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 n/a of Iowa's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 3,356 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. Decatur County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Decatur County, IA annual power outage report, 2025, 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/2025/iowa/decatur-county