EIA data through August 2026 · updated 2026-10-29

Ameren Illinois Company electricity rates

Ameren Illinois Company (investor owned) residential customers paid about 17.9¢ per kWh (Jan–Aug 2026) — an average bill of $130 for 853 kWh a month.

Avg. home price17.9¢per kWh
Residential customers1,060,894IL, 2024
Avg. monthly use853kWh
Commercial6.0¢per kWh
Industrial1.6¢per kWh
Illinois has retail electricity choice. Many households can buy electricity supply from a competing supplier, while the local utility still delivers it. The averages here combine utility and supplier sales as reported to the EIA; your state’s public utility commission lists licensed suppliers.

What a month costs with Ameren Illinois Company

500 kWh / month$90
900 kWh / month$161
1,200 kWh / month$215

Monthly cost at the average price of 17.9¢ per kWh. Real bills add or subtract fixed charges, tiers, time-of-use and fuel adjustments.

Price trend

10¢13¢16¢19¢22¢25¢20222023202420252026Illinois averageU.S. averageAmeren Illinois Company 10¢13¢16¢19¢22¢25¢20222023202420252026Illinois averageU.S. averageAmeren Illinois Company
Illinois averageU.S. averageAmeren Illinois Company
Aug 202619.3¢per kWh
vs. 1 year ago+7.2%18.0¢
vs. 5 years ago+50.4%12.8¢
Record high23.9¢May 2026
Avg. home bill$171886 kWh, Aug
EIA forecast, East North Central19.1¢Dec 2027

Hover or tap the chart for exact monthly values. Source: EIA-861M (monthly, latest months preliminary); forecast: EIA Short-Term Energy Outlook (October 2026) for the East North Central region, which includes Illinois, Indiana, Michigan, Ohio, Wisconsin.

ZIP codes served

60420Dwight60447Minooka60460Odell60470Ransom60512Bristol60518Earlville60531Leland60537Millington60538Montgomery60541Newark60543Oswego60545Plano60548Sandwich60549Serena60551Sheridan60557Wedron60560Yorkville60911Ashkum60912Beaverville60918Buckley60919Cabery60920Campus60921Chatsworth60922Chebanse60924Cissna Park60926Claytonville60927Clifton60928Crescent City60929Cullom60930Danforth60931Donovan60932East Lynn60933Elliott60934Emington60936Gibson City60938Gilman60939Goodwine60941Herscher60942Hoopeston60945Iroquois60946Kempton60948Loda60949Ludlow60951Martinton60952Melvin60953Milford60955Onarga60956Papineau60957Paxton60958Pembroke Township60959Piper City60960Rankin60962Roberts60963Rossville60964Saint Anne60966Sheldon60967Stockland60968Thawville60970Watseka60973Wellington60974Woodland61231Aledo61233Andover61234Annawan61235Atkinson61238Cambridge61241Colona61254Geneseo61258Hooppole61259Illinois City61260Joy61262Lynn Center61263Matherville61272New Boston61273Orion61274Osco61276Preemption61277Prophetstown61279Reynolds61281Sherrard61283Tampico61301La Salle61311Ancona61312Arlington61313Blackstone61314Buda61315Bureau61316Cedar Point61317Cherry61319Cornell61320Dalzell61321Dana61322Depue61325Grand Ridge61326Granville61327Hennepin61328Kasbeer61329Ladd61330La Moille61332Leonore61333Long Point61334Lostant61335Mc Nabb61336Magnolia61337Malden61338Manlius61340Mark61341Marseilles61342Mendota61344Mineral61345Neponset61346New Bedford61348Oglesby61349Ohio61350Ottawa61354Peru61356Princeton61358Rutland61359Seatonville61360Seneca61361Sheffield61362Spring Valley61364Streator61367Sublette61368Tiskilwa61369Toluca61370Tonica61372Troy Grove61373Utica61374Van Orin61375Varna61376Walnut61377Wenona61379Wyanet61401Galesburg61402Galesburg61410Abingdon61411Adair61412Alexis61413Alpha61414Altona61415Avon61416Bardolph61417Berwick61418Biggsville61419Bishop Hill61420Blandinsville61421Bradford61422Bushnell61423Cameron

and 868 more.

Averages, not a quote. Prices here are what each utility’s residential customers paid on average (revenue ÷ kWh sold, fixed charges included), as reported to the U.S. Energy Information Administration. Your own rate depends on your plan, season and usage — check your bill or your utility’s tariff.

Questions

What is Ameren Illinois Company’s electricity rate?

About 17.9¢ per kWh for residential customers (Jan–Aug 2026 average, EIA-861M), including fixed charges spread over usage.

What is the average Ameren Illinois Company electric bill?

$130 a month in 2024, for an average of 853 kWh (EIA-861).

Is Ameren Illinois Company cheaper than the Illinois average?

Yes: 17.9¢ versus the Illinois average of 19.3¢ (Aug 2026).