Des Moines County Power Outage History
2014–2025 · Iowa
Better than average — fewer or shorter outages than most counties. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Aug 28, 2024 | 30 hrs | 7,944 (43%) | Thunderstorm Wind |
| Aug 10, 2020 | 8 hrs | 6,658 (36%) | Thunderstorm Wind |
| Jun 21, 2015 | 8 hrs | 6,275 (34%) | Thunderstorm Wind |
| Jun 11, 2021 | 5 hrs | 4,966 (27%) | Thunderstorm Wind |
| Mar 31, 2023 | 26 hrs | 4,732 (25%) | Thunderstorm Wind |
Over the 12 years from 2014 to 2025, Des Moines County recorded 456 distinct power outage events, averaging 2.1 hours per event.
The single worst outage on record in Des Moines County started August 28, 2024 (Thunderstorm Wind), lasting 30 hours and leaving up to 7,944 customers without power (43% of the county) at its peak.
June has historically been the worst month for outages in Des Moines County, with 61 events recorded during that month across the dataset.
Based on this history, Des Moines County earns a Reliability Grade of B, placing it in the 63rd percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Des Moines County's outage profile
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Similar counties in Iowa
Counties with the closest reliability grade and national percentile to Des Moines County.
| County | Grade | National percentile |
|---|---|---|
| Fremont County | B | 64th |
| Wright County | B | 62nd |
| Ida County | B | 62nd |
| Harrison County | B | 61st |
| Lee County | B | 61st |
FAQ
How often does power go out in Des Moines County?
Between 2014 and 2025, Des Moines County recorded 456 outage events, averaging 2.1 hours each.
What is Des Moines County's reliability grade?
Des Moines County has a Reliability Grade of B, in the 63rd national percentile.
What was the worst power outage in Des Moines County?
The worst outage on record started August 28, 2024 (Thunderstorm Wind), lasting 30 hours and affecting up to 7,944 customers.