County annual report · FIPS 19033
2025 Cerro Gordo County, IA Power Outage Report
In 2025, customers in Cerro Gordo County, IA went without power for an average of 2.7 hours, a total of 80K customer-hours (Iowa average 2.9 hours). That ranks 51st worst of 99 Iowa counties and 2167th 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 Cerro Gordo 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 | April 30, 2025 16:30 | August 14, 2025 12:00 | 105d 19h | 7,467 | 66K |
| 2 | April 10, 2025 14:15 | April 10, 2025 18:30 | 4h 15m | 857 | 442 |
| 3 | April 17, 2025 19:00 | April 18, 2025 01:00 | 6h | 750 | 1,693 |
| 4 | October 7, 2025 12:00 | October 7, 2025 13:45 | 1h 45m | 724 | 381 |
| 5 | November 8, 2025 19:45 | November 8, 2025 20:45 | 1h | 376 | 376 |
| 6 | October 25, 2025 22:15 | October 25, 2025 23:45 | 1h 30m | 363 | 454 |
| 7 | November 25, 2025 23:15 | November 26, 2025 08:30 | 9h 15m | 284 | 814 |
| 8 | August 18, 2025 06:45 | August 18, 2025 17:45 | 11h | 248 | 950 |
| 9 | October 1, 2025 13:30 | October 1, 2025 14:15 | 45m | 232 | 151 |
| 10 | February 6, 2025 15:45 | February 6, 2025 17:45 | 2h | 179 | 358 |
Outage episodes by size in 2025: 13 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 Cerro Gordo 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 |
| Heartland Power Coop | 2024 | 65 min | 0.73 | 61 min | 0.71 |
| 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) | - | - | - | - | - |
| Prairie Energy Coop | - | - | - | - | - |
| Franklin Rural Electric Coop - (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 ÷ 29,435 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. Cerro Gordo County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Cerro Gordo 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/cerro-gordo-county