County annual report · FIPS 19079
2022 Hamilton County, IA Power Outage Report
In 2022, customers in Hamilton County, IA went without power for an average of 0.7 hours, a total of 6,392 customer-hours (Iowa average 1.6 hours). That ranks 92nd worst of 99 Iowa counties and 2793rd of 2,976 nationally.
Compared with IA, the US and 2021
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Hamilton County, 2022
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 14, 2022 18:45 | October 14, 2022 20:30 | 1h 45m | 363 | 545 |
| 2 | June 10, 2022 09:00 | June 10, 2022 09:15 | 15m | 283 | 71 |
| 3 | April 13, 2022 04:00 | April 13, 2022 06:00 | 2h | 248 | 320 |
| 4 | January 15, 2022 02:45 | January 15, 2022 07:15 | 4h 30m | 202 | 759 |
| 5 | October 3, 2022 17:30 | October 3, 2022 18:45 | 1h 15m | 188 | 198 |
| 6 | November 4, 2022 03:00 | November 4, 2022 15:15 | 12h 15m | 174 | 58 |
| 7 | September 13, 2022 21:00 | September 13, 2022 22:45 | 1h 45m | 166 | 172 |
| 8 | May 30, 2022 22:45 | May 31, 2022 13:00 | 14h 15m | 156 | 538 |
| 9 | September 10, 2022 21:30 | September 10, 2022 23:15 | 1h 45m | 111 | 193 |
| 10 | September 11, 2022 13:30 | September 11, 2022 19:30 | 6h | 109 | 310 |
Outage episodes by size in 2022: 11 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 2022, 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 | 2022 | 1.8 hrs | 1.03 | 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 91% of Iowa's customers in 2022; 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, 2022, 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/2022/iowa/hamilton-county