County annual report · FIPS 19023
2018 Butler County, IA Power Outage Report
In 2018, customers in Butler County, IA went without power for an average of 4.6 hours, a total of 22K customer-hours (Iowa average 2.2 hours). That ranks 15th worst of 99 Iowa counties and 1121st 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 Butler 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 24, 2018 05:15 | March 24, 2018 20:00 | 14h 45m | 1,170 | 8,151 |
| 2 | January 22, 2018 18:00 | January 22, 2018 18:15 | 15m | 675 | 169 |
| 3 | August 27, 2018 04:45 | August 27, 2018 18:00 | 13h 15m | 662 | 1,821 |
| 4 | April 27, 2018 15:45 | April 27, 2018 19:00 | 3h 15m | 527 | 558 |
| 5 | July 25, 2018 22:00 | July 26, 2018 13:30 | 15h 30m | 454 | 602 |
| 6 | January 21, 2018 14:45 | January 21, 2018 20:00 | 5h 15m | 386 | 1,959 |
| 7 | April 6, 2018 15:30 | April 6, 2018 16:15 | 45m | 354 | 266 |
| 8 | March 7, 2018 20:45 | March 8, 2018 00:00 | 3h 15m | 346 | 523 |
| 9 | May 27, 2018 17:30 | May 28, 2018 01:30 | 8h | 258 | 580 |
| 10 | June 8, 2018 17:15 | June 8, 2018 18:45 | 1h 30m | 257 | 365 |
Outage episodes by size in 2018: 19 reached 100+ customers, 1 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 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 |
|---|---|---|---|---|---|
| MidAmerican Energy Co | 2018 | 1.9 hrs | 1.18 | 75 min | 0.96 |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Butler County Rural Elec Coop - (IA) | - | - | - | - | - |
| 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 89% of Iowa's customers in 2018; 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, 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/butler-county