County annual report · FIPS 19079
2015 Hamilton County, IA Power Outage Report
In 2015, customers in Hamilton County, IA went without power for an average of 0.3 hours, a total of 2,318 customer-hours (Iowa average 1.1 hours). That ranks 90th worst of 99 Iowa counties and 2215th of 2,484 nationally.
Compared with IA, the US
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Hamilton County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 1, 2015 15:30 | September 1, 2015 15:45 | 15m | 252 | 63 |
| 2 | October 24, 2015 03:00 | October 24, 2015 09:15 | 6h 15m | 245 | 1,468 |
| 3 | October 14, 2015 19:00 | October 14, 2015 20:00 | 1h | 192 | 119 |
| 4 | August 23, 2015 04:15 | August 23, 2015 07:30 | 3h 15m | 146 | 294 |
| 5 | October 22, 2015 01:15 | October 22, 2015 01:30 | 15m | 27 | 7 |
| 6 | November 1, 2015 00:45 | November 1, 2015 03:15 | 2h 30m | 26 | 65 |
| 7 | September 28, 2015 18:30 | September 28, 2015 19:15 | 45m | 22 | 17 |
| 8 | October 14, 2015 00:45 | October 14, 2015 03:15 | 2h 30m | 20 | 45 |
| 9 | November 12, 2015 05:00 | November 12, 2015 08:00 | 3h | 20 | 40 |
| 10 | October 21, 2015 15:00 | October 21, 2015 16:30 | 1h 30m | 11 | 15 |
Outage episodes by size in 2015: 4 reached 100+ customers, 0 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 2015, 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 | 2015 | 2.2 hrs | 1.05 | 87 min | 0.88 |
| 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 2015; 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, 2015, 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/2015/iowa/hamilton-county