County annual report · FIPS 19017
2025 Bremer County, IA Power Outage Report
In 2025, customers in Bremer County, IA went without power for an average of 1.3 hours, a total of 21K customer-hours (Iowa average 2.9 hours). That ranks 91st worst of 99 Iowa counties and 2671st of 3,000 nationally.
Compared with IA, the US and 2024
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Bremer County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 29, 2025 06:15 | July 31, 2025 02:15 | 1d 20h | 2,333 | 9,812 |
| 2 | July 28, 2025 06:00 | July 28, 2025 23:15 | 17h 15m | 801 | 3,522 |
| 3 | June 11, 2025 21:45 | June 12, 2025 14:00 | 16h 15m | 579 | 813 |
| 4 | February 18, 2025 22:15 | February 18, 2025 22:45 | 30m | 497 | 248 |
| 5 | August 5, 2025 16:45 | August 5, 2025 17:00 | 15m | 222 | 56 |
| 6 | June 4, 2025 13:30 | June 4, 2025 18:15 | 4h 45m | 190 | 384 |
| 7 | August 15, 2025 20:30 | August 18, 2025 12:30 | 2d 16h | 186 | 303 |
| 8 | April 2, 2025 08:45 | April 2, 2025 16:15 | 7h 30m | 149 | 316 |
| 9 | April 4, 2025 16:00 | April 4, 2025 16:30 | 30m | 130 | 65 |
| 10 | August 2, 2025 17:30 | August 2, 2025 19:15 | 1h 45m | 130 | 228 |
Outage episodes by size in 2025: 10 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 Bremer County reported on EIA Form 861 for 2025, 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 |
| East-Central Iowa Rural Elec Coop | 2024 | 38 min | 0.53 | 38 min | 0.53 |
| Allamakee-Clayton El Coop, Inc | 2018 | 1.5 hrs | 0.73 | 1.5 hrs | 0.73 |
| 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) | - | - | - | - | - |
| Waverly Municipal Elec Utility | - | - | - | - | - |
| City of Denver - (IA) | - | - | - | - | - |
| City of Readlyn - (IA) | - | - | - | - | - |
| City of Sumner - (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 n/a of Iowa's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 16,028 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. Bremer County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Bremer County, IA annual power outage report, 2025, 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/2025/iowa/bremer-county