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2025 Iowa Power Outage Report

In 2025, the average Iowa customer went without power for about 2.9 hours — the 41st worst of any US state that year, below the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
2.9
Peak customers out
24,009
Rank (worst state)
41st
Counties affected
20

Iowa outages over the decade

Average hours without power per customer, 2025 highlighted.

1.1h20151.8h20162.0h20172.2h20182.2h201927.4h20202.7h20211.6h20222.0h20233.2h20242.9h2025

Hardest-hit Iowa counties in 2025

By peak customers out during the year's worst event.

1Polk County24,0092Scott County16,0973Black Hawk County12,8954Johnson County8,6295Cerro Gordo County7,4676Webster County7,1017Buena Vista County6,4288Lee County6,3959Dallas County6,03710Hancock County5,27111Marshall County5,13112Harrison County4,80113Pottawattamie County4,72114Poweshiek County4,71715Montgomery County4,10816Sioux County4,06017Linn County4,05018Butler County3,84019Jones County3,76220Jasper County3,534

Biggest Iowa outages of 2025

CountyBeganPeak customers out
Polk CountyJuly 28, 202524,009
Polk CountyJuly 11, 202518,190
Scott CountyJuly 11, 202516,097
Black Hawk CountyJuly 29, 202512,895
Scott CountyOctober 29, 202512,150
Polk CountyMarch 4, 20258,989
Polk CountySeptember 17, 20258,707
Johnson CountyDecember 1, 20258,629
Johnson CountyNovember 30, 20258,208
Cerro Gordo CountyApril 30, 20257,467
Iowa by year:20242023202220212020201920182017
Other states in 2025:WVMIAKPANCMO

Part of the 2025 US Power Outage Report. Source: DOE/ORNL EAGLE-I. “Avg hours per customer” is a SAIDI-like measure (outage customer-minutes ÷ tracked customers); coverage varies by year.