County annual report · FIPS 19053
2020 Decatur County, IA Power Outage Report
In 2020, customers in Decatur County, IA went without power for an average of 2.6 hours, a total of 8,676 customer-hours (Iowa average 27.4 hours). That ranks 45th worst of 99 Iowa counties and 2019th of 3,019 nationally.
Compared with IA, the US and 2019
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Decatur County, 2020
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 7, 2020 17:15 | April 7, 2020 18:45 | 1h 30m | 450 | 454 |
| 2 | June 28, 2020 11:30 | June 29, 2020 13:00 | 1d 1h | 223 | 2,051 |
| 3 | October 1, 2020 04:45 | October 1, 2020 08:45 | 4h | 166 | 664 |
| 4 | October 20, 2020 14:45 | October 20, 2020 18:45 | 4h | 159 | 94 |
| 5 | September 25, 2020 19:30 | September 28, 2020 20:00 | 3d | 152 | 564 |
| 6 | July 15, 2020 08:45 | July 15, 2020 17:00 | 8h 15m | 116 | 345 |
| 7 | August 5, 2020 19:45 | August 5, 2020 20:30 | 45m | 115 | 86 |
| 8 | August 10, 2020 16:45 | August 10, 2020 22:00 | 5h 15m | 115 | 180 |
| 9 | July 8, 2020 14:30 | July 8, 2020 16:45 | 2h 15m | 114 | 203 |
| 10 | July 12, 2020 01:00 | July 13, 2020 16:45 | 1d 15h | 83 | 330 |
Outage episodes by size in 2020: 9 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 2020, 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 91% of Iowa's customers in 2020; 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, 2020, 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/2020/iowa/decatur-county