Electricity and gas prices in Illinois

Households in Illinois paid an average of 19.89¢ per kilowatt-hour for electricity in June 2026, and $19.71 per thousand cubic feet of natural gas in June 2026. That is the 16th highest electricity price of the fifty states and DC.

What heat costs here

Dollars per million BTU delivered into the house — the only figure that compares a heat pump with a furnace, and the only one that needs no assumption about your house.

Gas furnace, 95% AFUE$20.01
Heat pump at COP 3.0$19.43
Heat pump at COP 2.0$29.15
Electric resistance$58.29

Which certified heat pumps hold their capacity at 5 °F in Illinois

Five years of prices

July 202112.68¢
October 202113.98¢
January 202212.92¢
April 202214.98¢
July 202216.36¢
October 202217.02¢
January 202315.99¢
April 202317.82¢
July 202314.81¢
October 202315.75¢
January 202414.77¢
April 202416.51¢
July 202415.19¢
October 202416.48¢
January 202515.78¢
April 202518.28¢
July 202517.22¢
October 202518.74¢
January 202616.36¢
April 202620.47¢

Who sells electricity in Illinois

Utilities reporting at least 1,000 residential customers. The price column is derived — total residential revenue divided by total residential sales in EIA’s 2024 annual survey — not a tariff, and not this month’s rate.

Utility	Ownership	Residential customers	Derived from the 2024 survey
Commonwealth Edison Co	Investor Owned	2,922,223	15.22¢
Ameren Illinois Company	Investor Owned	520,498	15.26¢
Adjustment 2024		122,255	16.42¢
Midamerican Energy Co	Investor Owned	73,564	9.99¢
City Of Springfield - (Il)	Municipal	59,621	11.95¢
City Of Naperville - (Il)	Municipal	56,117	12.98¢
Corn Belt Energy Corporation	Cooperative	34,710	15.76¢
Sunrun Inc.	Behind the Meter	31,729	15.06¢
Southwestern Electric Coop Inc. - (Il)	Cooperative	24,822	13.68¢
Southeastern Il Elec Coop, Inc.	Cooperative	22,731	14.47¢
Norris Electric Coop	Cooperative	18,074	15.08¢
Jo-Carroll Energy, Inc.	Cooperative	17,227	19.79¢
Tri-County Electric Coop, Inc. (Il)	Cooperative	16,197	16.04¢
City Of St Charles - (Il)	Municipal	14,181	15.37¢
Egyptian Electric Coop Assn	Cooperative	13,707	15.53¢
Wayne-White Counties Elec Coop	Cooperative	11,957	16.58¢
Eastern Illinois Elec Coop	Cooperative	11,115	17.10¢
City Of Batavia - (Il)	Municipal	10,020	14.08¢
Shelby Electric Coop, Inc. - (Il)	Cooperative	9,871	18.63¢
Rock Energy Cooperative	Cooperative	9,339	14.97¢
Menard Electric Coop	Cooperative	9,048	18.05¢
City Of Geneva- (Il)	Municipal	8,691	11.03¢
Coles-Moultrie Electric Coop	Cooperative	8,456	17.14¢
Rochelle Municipal Utilities	Municipal	5,854	13.22¢
City Of Peru - (Il)	Municipal	4,993	12.00¢
Mt Carmel Public Utility Co	Investor Owned	4,327	19.13¢
Everbright, LLC	Behind the Meter	3,246	12.06¢
Sunnova	Behind the Meter	1,955	20.60¢

Get told when this changes

A short note each month when EIA publishes new prices for Illinois.

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Prices: EIA Electric Power Monthly and Natural Gas Monthly, residential sector. Utility figures: EIA-861 annual survey, data year 2024. Both public domain.