County annual report · FIPS 19023
2015 Butler County, IA Power Outage Report
In 2015, customers in Butler County, IA went without power for an average of 0.6 hours, a total of 2,985 customer-hours (Iowa average 1.1 hours). That ranks 70th worst of 99 Iowa counties and 1995th of 2,484 nationally.
Compared with IA, the US
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Butler County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 8, 2015 23:15 | January 9, 2015 00:45 | 1h 30m | 717 | 1,076 |
| 2 | September 6, 2015 18:15 | September 6, 2015 20:15 | 2h | 131 | 248 |
| 3 | November 19, 2015 15:30 | November 19, 2015 19:30 | 4h | 120 | 250 |
| 4 | November 3, 2015 16:30 | November 3, 2015 22:15 | 5h 45m | 71 | 408 |
| 5 | October 14, 2015 23:45 | October 15, 2015 00:00 | 15m | 67 | 17 |
| 6 | August 28, 2015 09:45 | August 28, 2015 15:15 | 5h 30m | 58 | 119 |
| 7 | June 22, 2015 17:15 | June 22, 2015 23:15 | 6h | 42 | 202 |
| 8 | July 22, 2015 11:30 | July 22, 2015 12:45 | 1h 15m | 42 | 53 |
| 9 | November 7, 2015 16:15 | November 7, 2015 20:15 | 4h | 41 | 164 |
| 10 | September 28, 2015 14:45 | September 28, 2015 21:15 | 6h 30m | 22 | 55 |
Outage episodes by size in 2015: 3 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 Butler County reported on EIA Form 861 for 2015, 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 | 2015 | 2.2 hrs | 1.05 | 87 min | 0.88 |
| 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 n/a of Iowa's customers in 2015; 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, 2015, 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/2015/iowa/butler-county