PowerOutageHistory

Illinois Power Outage History

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

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Counties tracked
102
Avg national percentile
63rd
Higher = more reliable
Grade F counties
3

Illinois county map

Ford County: Grade B (click for details)Saline County: Grade C (click for details)Hamilton County: Grade B (click for details)Winnebago County: Grade B (click for details)DeKalb County: Grade A (click for details)Marshall County: Grade D (click for details)Piatt County: Grade C (click for details)Richland County: Grade A (click for details)Logan County: Grade C (click for details)Fayette County: Grade C (click for details)Effingham County: Grade A (click for details)Kendall County: Grade A (click for details)Knox County: Grade C (click for details)LaSalle County: Grade C (click for details)Tazewell County: Grade B (click for details)Christian County: Grade C (click for details)Scott County: Grade B (click for details)Grundy County: Grade B (click for details)Jefferson County: Grade C (click for details)Putnam County: Grade D (click for details)Marion County: Grade C (click for details)Henry County: Grade B (click for details)Macoupin County: Grade B (click for details)De Witt County: Grade D (click for details)McDonough County: Grade B (click for details)Wayne County: Grade A (click for details)St. Clair County: Grade C (click for details)Jasper County: Grade C (click for details)Cumberland County: Grade B (click for details)Bond County: Grade C (click for details)Edgar County: Grade D (click for details)Ogle County: Grade B (click for details)Jo Daviess County: Grade C (click for details)Fulton County: Grade B (click for details)Bureau County: Grade C (click for details)Stephenson County: Grade C (click for details)Pike County: Grade B (click for details)Mason County: Grade B (click for details)Lawrence County: Grade C (click for details)McHenry County: Grade B (click for details)Kane County: Grade B (click for details)Douglas County: Grade C (click for details)Jersey County: Grade A (click for details)Cass County: Grade A (click for details)Massac County: Grade A (click for details)Morgan County: Grade B (click for details)Mercer County: Grade F (click for details)Schuyler County: Grade A (click for details)Wabash County: Grade A (click for details)Franklin County: Grade B (click for details)Gallatin County: Grade D (click for details)Greene County: Grade A (click for details)Edwards County: Grade A (click for details)Warren County: Grade D (click for details)Brown County: Grade B (click for details)Montgomery County: Grade A (click for details)Madison County: Grade B (click for details)Union County: Grade B (click for details)Pope County: Grade C (click for details)Clark County: Grade C (click for details)Lee County: Grade C (click for details)Shelby County: Grade C (click for details)Cook County: Grade B (click for details)Kankakee County: Grade B (click for details)Pulaski County: Grade B (click for details)Clay County: Grade A (click for details)Vermilion County: Grade C (click for details)Menard County: Grade A (click for details)Monroe County: Grade D (click for details)Rock Island County: Grade C (click for details)Williamson County: Grade B (click for details)Woodford County: Grade C (click for details)Hardin County: Grade C (click for details)Adams County: Grade B (click for details)Iroquois County: Grade B (click for details)Livingston County: Grade B (click for details)Henderson County: Grade F (click for details)Boone County: Grade B (click for details)Alexander County: Grade B (click for details)Carroll County: Grade C (click for details)Will County: Grade B (click for details)Stark County: Grade F (click for details)Randolph County: Grade B (click for details)Lake County: Grade A (click for details)Macon County: Grade B (click for details)Washington County: Grade D (click for details)Crawford County: Grade B (click for details)Calhoun County: Grade C (click for details)McLean County: Grade A (click for details)Champaign County: Grade B (click for details)Clinton County: Grade B (click for details)Hancock County: Grade C (click for details)Whiteside County: Grade B (click for details)White County: Grade A (click for details)Sangamon County: Grade B (click for details)Moultrie County: Grade B (click for details)Johnson County: Grade C (click for details)Peoria County: Grade B (click for details)Jackson County: Grade B (click for details)Coles County: Grade A (click for details)Perry County: Grade C (click for details)DuPage County: Grade A (click for details)

Hover a county for its reliability grade

Reliability grade:ABCDF

County rankings (worst to best)

CountyGradeNational percentile
Mercer CountyF11th
Stark CountyF13th
Henderson CountyF19th
Marshall CountyD22nd
Putnam CountyD26th
Edgar CountyD29th
Washington CountyD31st
De Witt CountyD32nd
Gallatin CountyD35th
Warren CountyD35th
Monroe CountyD38th
Rock Island CountyC41st
Clark CountyC42nd
Perry CountyC44th
Carroll CountyC45th
Pope CountyC45th
Fayette CountyC46th
Vermilion CountyC46th
Lee CountyC46th
Shelby CountyC46th
Jefferson CountyC47th
Douglas CountyC48th
Christian CountyC48th
LaSalle CountyC49th
Calhoun CountyC49th
Logan CountyC50th
Jo Daviess CountyC50th
Knox CountyC50th
Bureau CountyC50th
Saline CountyC51st
Piatt CountyC52nd
Bond CountyC52nd
Hardin CountyC53rd
Johnson CountyC53rd
Hancock CountyC54th
Jasper CountyC54th
Stephenson CountyC57th
St. Clair CountyC58th
Marion CountyC59th
Lawrence CountyC60th
Woodford CountyC60th
Alexander CountyB60th
Whiteside CountyB60th
Crawford CountyB60th
Randolph CountyB61st
Winnebago CountyB61st
Franklin CountyB62nd
Adams CountyB62nd
Scott CountyB63rd
Brown CountyB63rd
Will CountyB63rd
Morgan CountyB64th
Macon CountyB64th
Livingston CountyB65th
Madison CountyB65th
Cumberland CountyB65th
Kankakee CountyB66th
McHenry CountyB67th
Pike CountyB67th
Clinton CountyB68th
Peoria CountyB68th
Sangamon CountyB68th
Tazewell CountyB69th
Ogle CountyB70th
Iroquois CountyB71st
Fulton CountyB71st
Williamson CountyB72nd
Boone CountyB73rd
Ford CountyB73rd
Jackson CountyB74th
Pulaski CountyB75th
Mason CountyB75th
Macoupin CountyB75th
Union CountyB76th
McDonough CountyB76th
Moultrie CountyB77th
Grundy CountyB77th
Hamilton CountyB77th
Henry CountyB78th
Champaign CountyB79th
Cook CountyB79th
Kane CountyB79th
Montgomery CountyA80th
DuPage CountyA80th
McLean CountyA81st
Greene CountyA81st
Menard CountyA82nd
Jersey CountyA84th
Coles CountyA84th
Richland CountyA87th
Wayne CountyA88th
White CountyA88th
DeKalb CountyA89th
Effingham CountyA89th
Schuyler CountyA91st
Edwards CountyA91st
Clay CountyA91st
Lake CountyA92nd
Cass CountyA92nd
Kendall CountyA93rd
Massac CountyA94th
Wabash CountyA97th