Henry 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 |
|---|---|---|---|
| Dec 14, 2024 | 11 hrs | 3,281 (28%) | Ice Storm |
| Dec 13, 2017 | 2 hrs | 2,921 (25%) | Unnamed event |
| Dec 19, 2016 | 2 hrs | 2,303 (19%) | Unnamed event |
| Dec 13, 2015 | 1 hrs | 2,287 (19%) | Unnamed event |
| Nov 4, 2016 | 2 hrs | 2,208 (19%) | Unnamed event |
Over the 12 years from 2014 to 2025, Henry County recorded 363 distinct power outage events, averaging 2.3 hours per event.
The single worst outage on record in Henry County started December 14, 2024 (Ice Storm), lasting 11 hours and leaving up to 3,281 customers without power (28% of the county) at its peak.
August has historically been the worst month for outages in Henry County, with 44 events recorded during that month across the dataset.
Based on this history, Henry County earns a Reliability Grade of B, placing it in the 71st percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Henry County's outage profile
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Outage-prep kit
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Similar counties in Iowa
Counties with the closest reliability grade and national percentile to Henry County.
| County | Grade | National percentile |
|---|---|---|
| Pottawattamie County | B | 72nd |
| Winnebago County | B | 72nd |
| Delaware County | B | 72nd |
| Monona County | B | 74th |
| Taylor County | B | 74th |
FAQ
How often does power go out in Henry County?
Between 2014 and 2025, Henry County recorded 363 outage events, averaging 2.3 hours each.
What is Henry County's reliability grade?
Henry County has a Reliability Grade of B, in the 71st national percentile.
What was the worst power outage in Henry County?
The worst outage on record started December 14, 2024 (Ice Storm), lasting 11 hours and affecting up to 3,281 customers.