County annual report · FIPS 19123
2023 Mahaska County, IA Power Outage Report
In 2023, customers in Mahaska County, IA went without power for an average of 1.1 hours, a total of 8,775 customer-hours (Iowa average 2.0 hours). That ranks 75th worst of 99 Iowa counties and 2653rd of 2,977 nationally.
Compared with IA, the US and 2022
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Mahaska County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 17, 2023 12:30 | June 17, 2023 18:00 | 5h 30m | 1,276 | 1,697 |
| 2 | November 30, 2023 14:15 | November 30, 2023 16:15 | 2h | 802 | 1,203 |
| 3 | April 30, 2023 00:00 | April 30, 2023 06:45 | 6h 45m | 319 | 802 |
| 4 | October 6, 2023 19:30 | October 7, 2023 02:45 | 7h 15m | 251 | 266 |
| 5 | November 15, 2023 21:15 | November 15, 2023 22:30 | 1h 15m | 214 | 205 |
| 6 | January 1, 2023 15:30 | January 1, 2023 17:30 | 2h | 210 | 420 |
| 7 | July 2, 2023 14:00 | July 2, 2023 16:45 | 2h 45m | 127 | 211 |
| 8 | September 19, 2023 22:30 | September 20, 2023 06:15 | 7h 45m | 97 | 232 |
| 9 | March 9, 2023 17:45 | March 9, 2023 18:30 | 45m | 87 | 44 |
| 10 | June 14, 2023 21:45 | June 14, 2023 22:45 | 1h | 83 | 71 |
Outage episodes by size in 2023: 7 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 2023, 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 | 2023 | 2.8 hrs | 1.13 | 78 min | 0.83 |
| T I P Rural Electric Coop | 2018 | 2.5 hrs | 1.33 | 2.5 hrs | 1.33 |
| 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 2023; 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, 2023, 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/2023/iowa/mahaska-county