County annual report · FIPS 19123
2017 Mahaska County, IA Power Outage Report
In 2017, customers in Mahaska County, IA went without power for an average of 1.4 hours, a total of 11K customer-hours (Iowa average 2.0 hours). That ranks 60th worst of 99 Iowa counties and 1867th 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 Mahaska 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 10, 2017 13:30 | May 10, 2017 18:30 | 5h | 1,662 | 2,985 |
| 2 | July 11, 2017 08:45 | July 11, 2017 17:45 | 9h | 535 | 695 |
| 3 | March 7, 2017 02:15 | March 7, 2017 23:00 | 20h 45m | 389 | 1,425 |
| 4 | January 31, 2017 21:30 | January 31, 2017 23:30 | 2h | 340 | 347 |
| 5 | January 13, 2017 23:15 | January 14, 2017 02:00 | 2h 45m | 334 | 674 |
| 6 | August 22, 2017 20:00 | August 22, 2017 20:45 | 45m | 284 | 144 |
| 7 | July 14, 2017 12:15 | July 14, 2017 13:15 | 1h | 219 | 124 |
| 8 | May 21, 2017 13:30 | May 21, 2017 15:30 | 2h | 157 | 224 |
| 9 | June 12, 2017 13:30 | June 12, 2017 14:45 | 1h 15m | 128 | 160 |
| 10 | May 16, 2017 02:45 | May 16, 2017 04:15 | 1h 30m | 127 | 191 |
Outage episodes by size in 2017: 11 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 Mahaska 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 |
| T I P Rural Electric Coop | 2017 | 2.8 hrs | 2.31 | 2.8 hrs | 2.31 |
| Interstate Power and Light Co | - | - | - | - | - |
| Pella Cooperative Elec Assn | - | - | - | - | - |
| City of Pella - (IA) | - | - | - | - | - |
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 ÷ 8,162 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. Mahaska County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Mahaska 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/mahaska-county