County annual report · FIPS 19023
2024 Butler County, IA Power Outage Report
In 2024, customers in Butler County, IA went without power for an average of 8.5 hours, a total of 41K customer-hours (Iowa average 3.2 hours). That ranks 9th worst of 99 Iowa counties and 1062nd of 2,990 nationally.
Compared with IA, the US and 2023
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Butler County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 21, 2024 22:30 | May 23, 2024 11:15 | 1d 12h | 3,026 | 14K |
| 2 | May 24, 2024 09:15 | May 24, 2024 21:00 | 11h 45m | 2,464 | 6,223 |
| 3 | March 7, 2024 01:45 | March 7, 2024 03:15 | 1h 30m | 1,339 | 2,005 |
| 4 | April 19, 2024 13:45 | April 22, 2024 12:00 | 2d 22h | 1,336 | 1,260 |
| 5 | May 2, 2024 05:15 | May 2, 2024 06:30 | 1h 15m | 886 | 1,108 |
| 6 | April 11, 2024 16:45 | April 11, 2024 17:30 | 45m | 696 | 522 |
| 7 | April 3, 2024 15:15 | April 3, 2024 21:45 | 6h 30m | 690 | 886 |
| 8 | January 29, 2024 17:30 | January 29, 2024 18:00 | 30m | 358 | 179 |
| 9 | March 20, 2024 14:00 | March 28, 2024 14:00 | 8d | 329 | 766 |
| 10 | December 16, 2024 05:00 | December 16, 2024 12:30 | 7h 30m | 287 | 501 |
Outage episodes by size in 2024: 15 reached 100+ customers, 4 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 Butler County reported on EIA Form 861 for 2024, 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 | 2024 | 5.5 hrs | 1.42 | 1.7 hrs | 0.94 |
| Butler County Rural Elec Coop - (IA) | 2024 | 86 min | 0.75 | 66 min | 0.64 |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Franklin Rural Electric Coop - (IA) | - | - | - | - | - |
| Grundy County Rural Elec Coop | - | - | - | - | - |
| Cedar Falls Utilities | - | - | - | - | - |
| City of Aplington | - | - | - | - | - |
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 2024; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 4,791 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. Butler County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Butler County, IA annual power outage report, 2024, 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/2024/iowa/butler-county