County annual report · FIPS 19053
2018 Decatur County, IA Power Outage Report
In 2018, customers in Decatur County, IA went without power for an average of 3.2 hours, a total of 11K customer-hours (Iowa average 2.2 hours). That ranks 26th worst of 99 Iowa counties and 1445th of 2,798 nationally.
Compared with IA, the US and 2017
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Decatur County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 14, 2018 15:30 | March 14, 2018 17:00 | 1h 30m | 733 | 746 |
| 2 | June 28, 2018 17:45 | June 28, 2018 23:00 | 5h 15m | 674 | 1,183 |
| 3 | September 1, 2018 08:00 | September 4, 2018 21:30 | 3d 13h | 657 | 1,339 |
| 4 | May 11, 2018 15:45 | May 11, 2018 17:15 | 1h 30m | 349 | 437 |
| 5 | October 10, 2018 02:30 | October 10, 2018 03:45 | 1h 15m | 188 | 142 |
| 6 | February 4, 2018 07:30 | February 5, 2018 14:15 | 1d 6h | 154 | 4,248 |
| 7 | August 23, 2018 03:30 | August 24, 2018 14:15 | 1d 10h | 87 | 249 |
| 8 | August 29, 2018 23:00 | August 30, 2018 00:00 | 1h | 68 | 68 |
| 9 | June 2, 2018 10:15 | June 2, 2018 16:45 | 6h 30m | 61 | 68 |
| 10 | March 24, 2018 13:30 | March 27, 2018 12:45 | 2d 23h | 45 | 187 |
Outage episodes by size in 2018: 6 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 2018, 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 89% of Iowa's customers in 2018; 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, 2018, 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/2018/iowa/decatur-county