County annual report · FIPS 19079
2024 Hamilton County, IA Power Outage Report
In 2024, customers in Hamilton County, IA went without power for an average of 0.8 hours, a total of 7,643 customer-hours (Iowa average 3.2 hours). That ranks 96th worst of 99 Iowa counties and 2771st 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 Hamilton 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 | August 18, 2024 22:00 | August 18, 2024 23:45 | 1h 45m | 1,077 | 754 |
| 2 | June 14, 2024 17:15 | June 14, 2024 17:45 | 30m | 863 | 432 |
| 3 | May 5, 2024 12:15 | May 5, 2024 15:00 | 2h 45m | 276 | 439 |
| 4 | April 14, 2024 21:30 | April 15, 2024 16:00 | 18h 30m | 233 | 308 |
| 5 | May 26, 2024 07:45 | May 26, 2024 10:00 | 2h 15m | 220 | 176 |
| 6 | May 24, 2024 10:30 | May 24, 2024 23:15 | 12h 45m | 186 | 935 |
| 7 | September 18, 2024 13:30 | September 18, 2024 17:30 | 4h | 183 | 322 |
| 8 | January 13, 2024 23:15 | January 14, 2024 05:15 | 6h | 176 | 306 |
| 9 | February 8, 2024 17:00 | February 8, 2024 19:00 | 2h | 154 | 306 |
| 10 | July 29, 2024 02:00 | July 29, 2024 03:00 | 1h | 153 | 153 |
Outage episodes by size in 2024: 12 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 Hamilton 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 |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Midland Power Coop | - | - | - | - | - |
| Prairie Energy Coop | - | - | - | - | - |
| City of Story City - (IA) | - | - | - | - | - |
| Cass Electric Coop | - | - | - | - | - |
| City of Stratford - (IA) | - | - | - | - | - |
| City of Ellsworth - (IA) | - | - | - | - | - |
| City of Stanhope - (IA) | - | - | - | - | - |
| City of Webster City - (IA) | - | - | - | - | - |
| Pleasant Hill Community Line | - | - | - | - | - |
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 ÷ 9,205 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. Hamilton County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Hamilton 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/hamilton-county