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Official EIA-861 State Grid Summary

Illinois Power Outage Risk, Electric Utilities & Generator Sizing

Illinois households average 2.6 hrs/yr (157 minutes/year) of total blackout duration across 0.85 outages/year (Reliability Grade B — Moderate Outage Risk), with an average residential electricity rate of 15.96 ¢/kWh.

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Interactive Appliance Load Calculator

⚡ Home Backup Wattage Sizer for Illinois

Check the appliances you need to keep running during a blackout. We calculate your continuous running watts, highest motor starting surge, and 20% NEC safety headroom automatically.

Live Sizing Result (+20% Headroom)
3,000 W
Recommended Minimum Generator / Inverter Rating
1,250 WContinuous Running
2,250 WPeak Motor Surge
Recommended Tier

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Top Cities & Towns in Illinois

Chicago→Aurora→Naperville→Joliet→Rockford→Elgin→Springfield→Peoria→Champaign→Waukegan→Cicero→Bloomington→Schaumburg→Evanston→Arlington Heights→Bolingbrook→Decatur→Palatine→Skokie→Des Plaines→Orland Park→Oak Lawn→Mount Prospect→Berwyn→Tinley Park→Wheaton→Normal→Oak Park→Hoffman Estates→Downers Grove→Plainfield→Glenview→Elmhurst→Lombard→Buffalo Grove→Moline→Crystal Lake→Romeoville→Bartlett→Belleville→DeKalb→Urbana→Carol Stream→Quincy→Oswego→Park Ridge→Streamwood→Wheeling→Carpentersville→Hanover Park→Rock Island→Addison→Calumet→Northbrook→Woodridge→St. Charles→Glendale Heights→Mundelein→O'Fallon→Elk Grove→Pekin→Highland Park→North Chicago→Gurnee→Algonquin→Niles→Galesburg→Glen Ellyn→McHenry→Lake in the Hills→Burbank→Huntley→New Lenox→Lansing→Danville→Wilmette→Round Lake Beach→Vernon Hills→Lockport→Granite→Oak Forest→Edwardsville→Batavia→Chicago Heights→Yorkville→Woodstock→West Chicago→Belvidere→Alton→South Elgin→Homer Glen→Zion→Morton Grove→Westmont→Melrose Park→Collinsville→Rolling Meadows→Elmwood Park→Loves Park→Lisle→Kankakee→Maywood→Freeport→Roselle→Machesney Park→Bloomingdale→Carbondale→East Peoria→Villa Park→Darien→Montgomery→Blue Island→Grayslake→Geneva→Frankfort→Park Forest→East Moline→South Holland→Dolton→Libertyville→

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Electric Utilities Operating in Illinois (EIA Form 861)

Utility NameOwnershipCustomersOutages/YrAnnual Outage TimeAvg RestorationResidential Rate
Commonwealth Edison Co (#4110)Investor-Owned2,922,2230.68x/yr132 min (2.2h)194 min15.22 ¢/kWh
Ameren Illinois Company (#56697)Investor-Owned540,3961.13x/yr224 min (3.7h)198 min8.29 ¢/kWh
MC Squared Energy Services, LLC (#56379)Retail Power Marketer244,0080.85x/yr157 min (2.6h)184 min6.79 ¢/kWh
Constellation NewEnergy, Inc (#13374)Retail Power Marketer199,3670.85x/yr157 min (2.6h)184 min10.24 ¢/kWh
Homefield Energy (#970)Retail Power Marketer163,0640.85x/yr157 min (2.6h)184 min8.70 ¢/kWh
Energy Harbor Corp. (#6458)Retail Power Marketer149,0060.85x/yr157 min (2.6h)184 min8.97 ¢/kWh
Reliant Energy Northeast LLC (#57037)Retail Power Marketer129,8690.85x/yr157 min (2.6h)184 min11.34 ¢/kWh
MidAmerican Energy Co (#12341)Investor-Owned73,5641.80x/yr352 min (5.9h)196 min9.99 ¢/kWh
City of Springfield - (IL) (#17828)Municipal59,6211.09x/yr83 min (1.4h)76 min11.95 ¢/kWh
City of Naperville - (IL) (#13208)Municipal56,1170.50x/yr25 min (0.4h)50 min12.98 ¢/kWh
Just Energy Solutions Inc. (#4100)Retail Power Marketer36,7860.85x/yr157 min (2.6h)184 min10.83 ¢/kWh
Direct Energy Services (#54820)Retail Power Marketer35,7750.85x/yr157 min (2.6h)184 min11.88 ¢/kWh
Corn Belt Energy Corporation (#4362)Cooperative34,7105.21x/yr312 min (5.2h)60 min15.76 ¢/kWh
Dynegy Energy Services, LLC (#59385)Retail Power Marketer33,3050.85x/yr157 min (2.6h)184 min6.70 ¢/kWh
Residents Energy, LLC (#59809)Retail Power Marketer31,0620.85x/yr157 min (2.6h)184 min14.36 ¢/kWh
Energy Services Providers, Inc (#55874)Retail Power Marketer30,1920.85x/yr157 min (2.6h)184 min13.62 ¢/kWh
Southwestern Electric Coop Inc - (IL) (#17697)Cooperative24,8222.21x/yr305 min (5.1h)138 min13.68 ¢/kWh
Ambit Energy Holdings, LLC (#56212)Retail Power Marketer24,4900.85x/yr157 min (2.6h)184 min11.17 ¢/kWh
CleanChoice Energy, Inc. (#58951)Retail Power Marketer24,3150.85x/yr157 min (2.6h)184 min11.81 ¢/kWh
SmartEnergy Holdings, LLC (#58956)Retail Power Marketer23,1020.85x/yr157 min (2.6h)184 min10.58 ¢/kWh
Southeastern IL Elec Coop, Inc (#17585)Cooperative22,7313.07x/yr603 min (10.0h)196 min14.47 ¢/kWh
Interstate Gas Supply, Inc. (#58957)Retail Power Marketer21,8080.85x/yr157 min (2.6h)184 min11.38 ¢/kWh
Palmco Power IL, LLC (#58314)Retail Power Marketer20,7130.85x/yr157 min (2.6h)184 min17.65 ¢/kWh
Norris Electric Coop (#13292)Cooperative18,0740.85x/yr157 min (2.6h)184 min15.08 ¢/kWh
Jo-Carroll Energy, Inc (#9750)Cooperative17,2270.53x/yr66 min (1.1h)127 min19.79 ¢/kWh
Tri-County Electric Coop, Inc (IL) (#18955)Cooperative16,1972.50x/yr372 min (6.2h)149 min16.04 ¢/kWh
Spark Energy, LP (#17710)Retail Power Marketer15,3560.85x/yr157 min (2.6h)184 min19.20 ¢/kWh
City of St Charles - (IL) (#17860)Municipal14,1810.56x/yr77 min (1.3h)136 min15.37 ¢/kWh
Egyptian Electric Coop Assn (#5535)Cooperative13,7071.00x/yr127 min (2.1h)100 min15.53 ¢/kWh
IDT Energy, Inc. (#55815)Retail Power Marketer13,1930.85x/yr157 min (2.6h)184 min12.36 ¢/kWh
Wayne-White Counties Elec Coop (#20222)Cooperative11,9570.85x/yr157 min (2.6h)184 min16.58 ¢/kWh
Southern Illinois Elec Coop (#17631)Cooperative11,2350.85x/yr157 min (2.6h)184 min16.34 ¢/kWh
Eastern Illinois Elec Coop (#5585)Cooperative11,1152.18x/yr268 min (4.5h)123 min17.10 ¢/kWh
XOOM Energy Illinois, LLC (#57488)Retail Power Marketer11,0830.85x/yr157 min (2.6h)184 min11.08 ¢/kWh
Illinois Rural Electric Coop (#9209)Cooperative10,2940.85x/yr157 min (2.6h)184 min19.52 ¢/kWh