County annual report · FIPS 19079
2017 Hamilton County, IA Power Outage Report
In 2017, customers in Hamilton County, IA went without power for an average of 0.8 hours, a total of 7,746 customer-hours (Iowa average 2.0 hours). That ranks 84th worst of 99 Iowa counties and 2119th of 2,786 nationally.
Compared with IA, the US and 2016
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Hamilton County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 9, 2017 07:30 | May 9, 2017 10:15 | 2h 45m | 1,109 | 3,050 |
| 2 | March 17, 2017 03:30 | March 17, 2017 06:15 | 2h 45m | 226 | 622 |
| 3 | October 17, 2017 19:45 | October 17, 2017 22:15 | 2h 30m | 187 | 380 |
| 4 | January 16, 2017 17:30 | January 16, 2017 21:00 | 3h 30m | 178 | 212 |
| 5 | July 28, 2017 03:00 | July 28, 2017 04:00 | 1h | 128 | 128 |
| 6 | July 20, 2017 16:30 | July 20, 2017 18:00 | 1h 30m | 118 | 159 |
| 7 | February 9, 2017 12:45 | February 9, 2017 15:15 | 2h 30m | 94 | 212 |
| 8 | July 5, 2017 22:00 | July 6, 2017 00:00 | 2h | 93 | 46 |
| 9 | February 24, 2017 08:30 | February 24, 2017 23:45 | 15h 15m | 89 | 512 |
| 10 | March 6, 2017 23:15 | March 7, 2017 09:30 | 10h 15m | 89 | 291 |
Outage episodes by size in 2017: 6 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 2017, 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 | 2017 | 1.9 hrs | 1.00 | 1.6 hrs | 0.91 |
| 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 2017; 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, 2017, 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/2017/iowa/hamilton-county