PowerOutageHistory
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Wapello County Power Outage History

2014–2025 · Iowa

Top 20% most reliable nationally — infrequent, short outages. How grades are calculated

Total events
335
Avg duration
1.7 hrs
Longest outage
20 hrs
National percentile
83rd

Outages by year

Outages by month (seasonality)

Worst outage events on record

DateDurationCustomers affectedCause
Feb 11, 20180 hrs6,921 (31%)Unnamed event
Jul 21, 201914 hrs6,713 (30%)Excessive Heat
Jun 29, 20234 hrs5,742 (26%)Drought
Aug 19, 20162 hrs5,582 (25%)Unnamed event
Jun 28, 201810 hrs5,500 (25%)Drought

Over the 12 years from 2014 to 2025, Wapello County recorded 335 distinct power outage events, averaging 1.7 hours per event.

The single worst outage on record in Wapello County started February 11, 2018, lasting 0 hours and leaving up to 6,921 customers without power (31% of the county) at its peak.

June has historically been the worst month for outages in Wapello County, with 51 events recorded during that month across the dataset.

Based on this history, Wapello County earns a Reliability Grade of A, placing it in the 83rd percentile nationally for grid reliability (higher percentile = more reliable).

Sized for Wapello County's outage profile

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Similar counties in Iowa

Counties with the closest reliability grade and national percentile to Wapello County.

CountyGradeNational percentile
Davis CountyA82nd
Lucas CountyA82nd
Woodbury CountyA83rd
Mahaska CountyA84th
Buchanan CountyA84th

FAQ

How often does power go out in Wapello County?

Between 2014 and 2025, Wapello County recorded 335 outage events, averaging 1.7 hours each.

What is Wapello County's reliability grade?

Wapello County has a Reliability Grade of A, in the 83rd national percentile.

What was the worst power outage in Wapello County?

The worst outage on record started February 11, 2018, lasting 0 hours and affecting up to 6,921 customers.

Data: ORNL EAGLE-I Recorded Electricity Outages (2014–2025), CC BY 4.0. Storm names: NOAA Storm Events Database. Last data refresh: 2025. See methodology.