County annual report · FIPS 19079
2019 Hamilton County, IA Power Outage Report
In 2019, customers in Hamilton County, IA went without power for an average of 1.1 hours, a total of 9,790 customer-hours (Iowa average 2.2 hours). That ranks 85th worst of 99 Iowa counties and 2465th of 2,945 nationally.
Compared with IA, the US and 2018
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Hamilton County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 3, 2019 16:15 | December 3, 2019 18:15 | 2h | 1,111 | 559 |
| 2 | October 16, 2019 22:30 | October 17, 2019 03:00 | 4h 30m | 663 | 2,820 |
| 3 | April 17, 2019 14:30 | April 17, 2019 14:45 | 15m | 405 | 101 |
| 4 | January 8, 2019 10:15 | January 8, 2019 11:15 | 1h | 371 | 370 |
| 5 | September 12, 2019 16:45 | September 12, 2019 17:30 | 45m | 270 | 203 |
| 6 | September 23, 2019 19:00 | September 23, 2019 19:15 | 15m | 270 | 68 |
| 7 | September 15, 2019 06:45 | September 15, 2019 09:45 | 3h | 225 | 606 |
| 8 | November 15, 2019 17:15 | November 15, 2019 20:15 | 3h | 205 | 158 |
| 9 | February 24, 2019 05:45 | February 24, 2019 18:00 | 12h 15m | 146 | 1,680 |
| 10 | August 23, 2019 22:45 | August 23, 2019 23:45 | 1h | 143 | 107 |
Outage episodes by size in 2019: 14 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 2019, 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) | - | - | - | - | - |
| 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 89% of Iowa's customers in 2019; 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, 2019, 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/2019/iowa/hamilton-county