Mahaska County Power Outage History
2014–2025 · Iowa
Top 20% most reliable nationally — infrequent, short outages. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Apr 27, 2024 | 8 hrs | 5,512 (43%) | Drought |
| Mar 18, 2022 | 5 hrs | 3,067 (24%) | Unnamed event |
| Jul 13, 2016 | 9 hrs | 2,706 (21%) | Thunderstorm Wind |
| Sep 2, 2018 | 4 hrs | 2,531 (20%) | Thunderstorm Wind |
| Aug 10, 2020 | 6 hrs | 2,507 (19%) | Thunderstorm Wind |
Over the 12 years from 2014 to 2025, Mahaska County recorded 321 distinct power outage events, averaging 2.0 hours per event.
The single worst outage on record in Mahaska County started April 27, 2024 (Drought), lasting 8 hours and leaving up to 5,512 customers without power (43% of the county) at its peak.
July has historically been the worst month for outages in Mahaska County, with 47 events recorded during that month across the dataset.
Based on this history, Mahaska County earns a Reliability Grade of A, placing it in the 84th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Mahaska County's outage profile
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Similar counties in Iowa
Counties with the closest reliability grade and national percentile to Mahaska County.
| County | Grade | National percentile |
|---|---|---|
| Woodbury County | A | 83rd |
| Buchanan County | A | 84th |
| Wapello County | A | 83rd |
| Dickinson County | A | 85th |
| Davis County | A | 82nd |
FAQ
How often does power go out in Mahaska County?
Between 2014 and 2025, Mahaska County recorded 321 outage events, averaging 2.0 hours each.
What is Mahaska County's reliability grade?
Mahaska County has a Reliability Grade of A, in the 84th national percentile.
What was the worst power outage in Mahaska County?
The worst outage on record started April 27, 2024 (Drought), lasting 8 hours and affecting up to 5,512 customers.