PowerOutageHistory

Iowa Power Outage History

99 counties tracked, 2014–2025. County-level reliability grades and outage frequency below.

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Counties tracked
99
Avg national percentile
64th
Higher = more reliable
Grade F counties
6

Iowa county map

Black Hawk County: Grade A (click for details)Hancock County: Grade C (click for details)Wapello County: Grade A (click for details)Cedar County: Grade D (click for details)Howard County: Grade C (click for details)Warren County: Grade B (click for details)Wayne County: Grade C (click for details)Marshall County: Grade F (click for details)Franklin County: Grade B (click for details)Delaware County: Grade B (click for details)Buchanan County: Grade A (click for details)Webster County: Grade C (click for details)Boone County: Grade D (click for details)Ringgold County: Grade C (click for details)Shelby County: Grade B (click for details)Union County: Grade A (click for details)Adams County: Grade C (click for details)Mahaska County: Grade A (click for details)Adair County: Grade A (click for details)Hamilton County: Grade B (click for details)Hardin County: Grade C (click for details)Ida County: Grade B (click for details)Marion County: Grade A (click for details)Poweshiek County: Grade F (click for details)Polk County: Grade B (click for details)Madison County: Grade A (click for details)Van Buren County: Grade C (click for details)Henry County: Grade B (click for details)Cerro Gordo County: Grade A (click for details)Wright County: Grade B (click for details)Jones County: Grade C (click for details)Carroll County: Grade A (click for details)Greene County: Grade D (click for details)Emmet County: Grade A (click for details)Mitchell County: Grade B (click for details)Montgomery County: Grade B (click for details)Bremer County: Grade A (click for details)Washington County: Grade C (click for details)O'Brien County: Grade B (click for details)Pocahontas County: Grade B (click for details)Davis County: Grade A (click for details)Crawford County: Grade B (click for details)Grundy County: Grade C (click for details)Audubon County: Grade B (click for details)Linn County: Grade F (click for details)Keokuk County: Grade C (click for details)Sac County: Grade C (click for details)Woodbury County: Grade A (click for details)Pottawattamie County: Grade B (click for details)Muscatine County: Grade A (click for details)Mills County: Grade C (click for details)Osceola County: Grade A (click for details)Fayette County: Grade B (click for details)Jasper County: Grade F (click for details)Des Moines County: Grade B (click for details)Story County: Grade C (click for details)Plymouth County: Grade A (click for details)Appanoose County: Grade C (click for details)Dubuque County: Grade A (click for details)Fremont County: Grade B (click for details)Decatur County: Grade B (click for details)Winneshiek County: Grade C (click for details)Clay County: Grade A (click for details)Johnson County: Grade C (click for details)Lucas County: Grade A (click for details)Monroe County: Grade D (click for details)Iowa County: Grade D (click for details)Benton County: Grade F (click for details)Kossuth County: Grade A (click for details)Scott County: Grade C (click for details)Harrison County: Grade B (click for details)Louisa County: Grade C (click for details)Page County: Grade B (click for details)Clayton County: Grade A (click for details)Humboldt County: Grade B (click for details)Jefferson County: Grade C (click for details)Sioux County: Grade A (click for details)Dallas County: Grade B (click for details)Cass County: Grade A (click for details)Clarke County: Grade A (click for details)Monona County: Grade B (click for details)Calhoun County: Grade C (click for details)Jackson County: Grade A (click for details)Chickasaw County: Grade A (click for details)Guthrie County: Grade C (click for details)Winnebago County: Grade B (click for details)Dickinson County: Grade A (click for details)Lee County: Grade B (click for details)Taylor County: Grade B (click for details)Butler County: Grade C (click for details)Floyd County: Grade B (click for details)Worth County: Grade C (click for details)Cherokee County: Grade A (click for details)Palo Alto County: Grade A (click for details)Tama County: Grade F (click for details)Buena Vista County: Grade A (click for details)Lyon County: Grade B (click for details)Allamakee County: Grade C (click for details)Clinton County: Grade D (click for details)

Hover a county for its reliability grade

Reliability grade:ABCDF

County rankings (worst to best)

CountyGradeNational percentile
Marshall CountyF6th
Tama CountyF12th
Jasper CountyF14th
Poweshiek CountyF15th
Linn CountyF16th
Benton CountyF18th
Greene CountyD20th
Monroe CountyD21st
Cedar CountyD22nd
Clinton CountyD23rd
Iowa CountyD27th
Boone CountyD32nd
Wayne CountyC41st
Ringgold CountyC42nd
Adams CountyC43rd
Louisa CountyC44th
Jones CountyC45th
Grundy CountyC46th
Calhoun CountyC47th
Washington CountyC47th
Appanoose CountyC48th
Hancock CountyC48th
Mills CountyC49th
Scott CountyC50th
Keokuk CountyC51st
Worth CountyC51st
Van Buren CountyC52nd
Hardin CountyC52nd
Jefferson CountyC52nd
Howard CountyC54th
Story CountyC54th
Winneshiek CountyC57th
Sac CountyC58th
Johnson CountyC58th
Allamakee CountyC58th
Webster CountyC59th
Butler CountyC59th
Guthrie CountyC59th
Polk CountyB60th
Fayette CountyB61st
Franklin CountyB61st
Lee CountyB61st
Harrison CountyB61st
Ida CountyB62nd
Wright CountyB62nd
Des Moines CountyB63rd
Fremont CountyB64th
Mitchell CountyB67th
Pocahontas CountyB68th
Henry CountyB71st
Pottawattamie CountyB72nd
Winnebago CountyB72nd
Delaware CountyB72nd
Monona CountyB74th
Taylor CountyB74th
Montgomery CountyB74th
Humboldt CountyB75th
Floyd CountyB75th
Dallas CountyB76th
Page CountyB77th
Shelby CountyB77th
Lyon CountyB78th
Audubon CountyB78th
Crawford CountyB79th
Warren CountyB79th
O'Brien CountyB79th
Decatur CountyB79th
Hamilton CountyB80th
Cerro Gordo CountyA80th
Clarke CountyA80th
Clayton CountyA80th
Madison CountyA81st
Lucas CountyA82nd
Davis CountyA82nd
Wapello CountyA83rd
Woodbury CountyA83rd
Mahaska CountyA84th
Buchanan CountyA84th
Dickinson CountyA85th
Chickasaw CountyA85th
Kossuth CountyA86th
Sioux CountyA86th
Palo Alto CountyA86th
Buena Vista CountyA87th
Jackson CountyA87th
Union CountyA87th
Cherokee CountyA87th
Plymouth CountyA88th
Osceola CountyA88th
Black Hawk CountyA88th
Carroll CountyA88th
Marion CountyA89th
Cass CountyA89th
Adair CountyA90th
Dubuque CountyA91st
Muscatine CountyA92nd
Bremer CountyA94th
Emmet CountyA95th
Clay CountyA97th