Electric Consumer

Editor: Katerine G., Editor & Data Researcher · Research & publishing: Electric Consumer Editorial Team · Data retrieved · Sources named on this page: EIA-861, EIA retail sales, EIA-860/923, EPA eGRID, Census ACS · How we got these numbers · Report an error

Illinois electric companies, rates and outages

Illinois has 12,692,653 residents and 6,036,676 electric accounts across 23 utilities listed by EIA.

A barn and wind turbines in rural Illinois
Barn wind turbines 0504. Photo by Dori, CC BY 2.5, Wikimedia Commons. Illustrative, not a listed utility's plant.

In 2025 Illinois homes paid 17.69 ¢/kWh: rank 17 of 51, 2.3% above the U.S. average of 17.30 ¢ (2024: 15.87 ¢).

Calculators for Illinois

How it compares

Illinois prices
Customer sector2024GapRank
Residential15.87 ¢/kWh-3.7% against the U.S.19 of 511 is highest
Commercial11.81 ¢/kWh-7.4% against the U.S.24 of 511 is highest
Industrial8.83 ¢/kWh+8.6% against the U.S.16 of 511 is highest

Electric companies in Illinois

Illinois home prices, 2024; lowest filled.

Illinois companies
CompanyHome accountsAverage priceReliabilityNet metering
City of Geneva- (IL)Lowest price8,69111.03 ¢/kWh$76 a month at 693 kWh83 minSAIDI, SAIFI 0.641.9 MW47 systems
Ameren Illinois Company1,060,89411.76 ¢/kWh$81 a month at 693 kWh121 minSAIDI, SAIFI 0.91648.9 MW45,577 systems
City of Springfield59,62111.95 ¢/kWh$83 a month at 693 kWhNo data9.8 MW511 systems
City of Peru4,99312.00 ¢/kWh$83 a month at 693 kWhNo data0.4 MW11 systems
City of Naperville56,11712.98 ¢/kWh$90 a month at 693 kWhNo data10.8 MW1,038 systems
Rochelle Municipal Utilities5,85413.22 ¢/kWh$92 a month at 693 kWhNo data0.9 MW28 systems
Commonwealth Edison Co3,727,67513.39 ¢/kWh$93 a month at 693 kWh36 minSAIDI, SAIFI 0.491,006.2 MW98,936 systems
Southwestern Electric Coop Inc24,82213.68 ¢/kWh$95 a month at 693 kWh263 minSAIDI, SAIFI 1.78No data
City of Batavia10,02014.08 ¢/kWh$98 a month at 693 kWh41 minSAIDI, SAIFI 0.39No data
Southeastern IL Elec Coop, Inc22,73114.47 ¢/kWh$100 a month at 693 kWh138 minSAIDI, SAIFI 1.503.5 MW284 systems
Rock Energy Cooperative9,33914.97 ¢/kWh$104 a month at 693 kWh16 minSAIDI, SAIFI 0.340.5 MW72 systems
Norris Electric Coop18,07415.08 ¢/kWh$105 a month at 693 kWhNo data3.6 MW218 systems
City of St Charles14,18115.37 ¢/kWh$106 a month at 693 kWhNo data2.6 MW47 systems
Egyptian Electric Coop Assn13,70715.53 ¢/kWh$108 a month at 693 kWhNo data4.2 MW401 systems
Corn Belt Energy Corporation34,71015.76 ¢/kWh$109 a month at 693 kWh152 minSAIDI, SAIFI 4.6815.2 MW723 systems
Tri-County Electric Coop, Inc (IL)16,19716.04 ¢/kWh$111 a month at 693 kWh64 minSAIDI, SAIFI 0.730.8 MW95 systems
Wayne-White Counties Elec Coop11,95716.58 ¢/kWh$115 a month at 693 kWhNo data1.4 MW96 systems
Eastern Illinois Elec Coop11,11517.10 ¢/kWh$119 a month at 693 kWh194 minSAIDI, SAIFI 1.756.0 MW468 systems
Coles-Moultrie Electric Coop8,45617.14 ¢/kWh$119 a month at 693 kWhNo data1.9 MW115 systems
Menard Electric Coop9,04818.05 ¢/kWh$125 a month at 693 kWh113 minSAIDI, SAIFI 1.272.5 MW260 systems
Shelby Electric Coop, Inc9,87118.63 ¢/kWh$129 a month at 693 kWhNo data2.3 MW212 systems
Mt Carmel Public Utility Co4,32719.13 ¢/kWh$133 a month at 693 kWhNo data0.8 MW56 systems
Jo-Carroll Energy, Inc17,22719.79 ¢/kWh$137 a month at 693 kWh49 minSAIDI, SAIFI 0.428.9 MW889 systems

Illinois: 2025 and 2026

Illinois, data to July 2026.

Illinois 2025 average price
17.69 ¢/kWh+11.5% against 2024, U.S. +5.0%
Illinois 2025 rank
17 of 51+2 places against 2024
Illinois January to Jul 2026
19.22 ¢/kWh+10.7% on Jan-Jul 2025
Illinois Last 12 months
18.79 ¢/kWhto July 2026
Illinois July 2026
19.22 ¢/kWh+11.6% against July 2025
Illinois 2025 costliest month
Sep 19.05 ¢cheapest Jan 15.78 ¢, a 21% spread
Illinois Typical 2025 bill
$128 a monthtop Jul $185, low Apr $96

The Illinois residential price averaged 17.69 ¢/kWh in 2025, +11.5% on 2024: Illinois ran 6.5 points faster than the nation. From January to July 2026 the Illinois average is 19.22 ¢, +10.7% on 2025, 3.6 points above the U.S. change. Seasonality in Illinois: 2025 peaked in September at 19.05 ¢ and bottomed in January at 15.78 ¢. A typical residential account in Illinois paid about $1,532 for energy over 2025, from $96 in April to $185 in July; use per account ran 526 to 1,072 kWh a month.

Illinois price by month, 2024 to Jul 2026

Price by month, Illinois: 12 rows
Month202420252026 to Jul
Jan14.7715.7816.36
Feb15.6016.4717.83
Mar15.9517.5518.86
Apr16.5118.2820.47
May16.5218.5823.85
Jun16.0118.2919.89
Jul15.1917.2219.22
Aug15.6218.06No data
Sep15.8019.05No data
Oct16.4818.74No data
Nov17.0618.31No data
Dec15.9617.07No data

12 rows from EIA retail sales.

CSV

What a typical Illinois account paid each month

Illinois: use per account times price, energy only.

Typical bill by month, Illinois: 12 rows
Month20252026 to Jul
Jan131133
Feb115128
Mar109115
Apr96110
May100123
Jun162143
Jul185193
Aug163No data
Sep125No data
Oct108No data
Nov105No data
Dec131No data

12 rows from EIA retail sales.

CSV

What Illinois power is made of

In plain words. Nuclear is the biggest source in Illinois (51%), and the power made there is cleaner than the U.S. average per kWh. Plants with 3,964 MW are planned to retire by 2030. New plants with 2,920 MW are under construction.

In 2025 Illinois plants of 1 MW or more made 191.8 TWh. The biggest sources: nuclear 50.9%, coal 16.1%, natural gas 16.0%. For comparison, nuclear makes 17.7% of U.S. generation. Wind, solar and hydro together: 16.6% (22.6% for the U.S.). Illinois plants only; imports and rooftop solar are not counted.

Illinois, share of net generation, %

  • Coal 16.1
  • Natural gas 16.0
  • Nuclear 50.9
  • Hydro (conventional) 0.1
  • Wind 13.1
  • Utility-scale solar 3.5
  • Petroleum 0.0
  • Wood, biomass, geothermal, waste 0.1
  • Other 0.2

Fuel groups: prices guide.

Illinois, share of net generation and operating capacity: 9 rows
SourceIllinois share of generation, %U.S. share, %Illinois generation, TWhIllinois capacity, MW
Coal16.116.630.897,415
Natural gas16.040.930.7418,755
Nuclear50.917.797.6712,415
Hydro (conventional)0.15.50.1038
Wind13.110.425.118,461
Utility-scale solar3.56.86.684,389
Petroleum0.00.40.03758
Wood, biomass, geothermal, waste0.11.40.2161
Other0.20.40.39121

EIA-923 and EIA-860 for Illinois, 2025 data, pulled 2 Oct 2026.

CSV

Illinois plant pipeline

Illinois, megawatts: 6 rows
Illinois plantsMW
Operating, utility-scale52,414
Battery storage100
Retiring 2026 to 20303,964
Retiring after 20300
Under construction2,920
Planned5,774

EIA-860 generators in Illinois, 2025 data.

CSV

Illinois carbon per kWh

Illinois plants emitted 472 lb of CO₂ per MWh in 2023 (0.214 kg per kWh), against 767 lb for the U.S. An average Illinois home using 717 kWh a month accounts for about 153 kg of CO₂ a month at that rate. The rate is for Illinois plants, not your supplier.

state and national values: 4 rows
MeasureIllinoisU.S.
CO₂, lb per MWh471.7767.2
CO₂, kg per kWh0.2140.348
NOx, lb per MWh0.1690.452
SO2, lb per MWh0.2700.359

EPA eGRID2023 for Illinois, pulled 2 Oct 2026.

CSV

Who delivers and who sells in Illinois

25.0% of Illinois home accounts bought energy from a supplier other than the wires company in 2024 (60 suppliers reported), 5,392,477 accounts in all. Plan prices are not shown here: choosing a supplier.

Illinois, largest wires companies: 3 rows
Illinois wires companyDelivery-only home accounts
Commonwealth Edison Co805,452
Ameren Illinois Company540,396
MidAmerican Energy Co18

EIA-861 wires companies in Illinois, 2024 data.

CSV
Illinois, largest suppliers by home accounts: 5 rows
Illinois supplierHome accounts
MC Squared Energy Services, LLC244,008
Constellation NewEnergy, Inc199,367
Homefield Energy163,064
Energy Harbor Corp.149,006
Reliant Energy Northeast LLC129,869

EIA-861 suppliers in Illinois, 2024 data.

CSV

Illinois weather

A normal year in Illinois brings 6,437 heating and 841 cooling degree-days (1991 to 2020). 2025 had 5,887 heating (9% below normal) and 1,042 cooling (24% above normal).

Illinois degree-days by year

Heating and cooling degree-days, Illinois, 2015 to 2025: 11 rows
Illinois yearHeating (HDD)Cooling (CDD)Normal HDDNormal CDD
201560048426437841
2016554410896437841
201755438406437841
2018642710966437841
201964309366437841
202057749516437841
2021568410636437841
202263259296437841
202353208816437841
2024508010246437841
2025588710426437841

NOAA nClimDiv degree-days for Illinois, 2015 to 2025, pulled 2 Oct 2026.

CSV

Illinois meters and time-of-use rates

93.6% of Illinois home meters are advanced (AMI) meters: 5,225,751 of 5,585,260. 7 of 23 reporting utilities offer a home time-of-use rate, and 518,810 home accounts are enrolled in dynamic pricing programs.

EIA-861 meters in Illinois, data year 2024, pulled 2 Oct 2026: homes.

Flood claims and flood insurance in Illinois

Illinois: 5,413 NFIP flood claims with a loss date in 2015 to 2025, $97.8M paid, median paid claim $9,913; 20th of 55 states and territories by dollars paid. The peak year was 2019 with 1,051 claims. FEMA counts 0.5% of Illinois residential structures as insured, 39th of 51, and the policy file shows 30,599 NFIP policies in force on 8 Sep 2026. Floods damage substations and lines, and in Illinois this is claims history, not an outage count.

Illinois counties with the most NFIP flood claims
Top counties in IllinoisClaims 2015-2025PaidClaims per 1,000 homes
Cook County1,180$12.8M0.9
Lake County609$12.4M2.7
Iroquois County376$8.9M29.9
St. Clair County342$4.0M3.4
Rock Island County240$3.9M4.6

Illinois: flood claims by state, flood claims by county. 5,413 Illinois claims as of 8 Sep 2026, OpenFEMA NFIP; counts under 5 hidden.

Illinois charts

Price by sector, Illinois

Home 15.87, business 11.81, industry 8.83 ¢ in 2024.

Illinois price by sector 2015-2024, 2015 to 2024: 10 rows
YearResidentialCommercialIndustrialGap to U.S. residential
201512.509.026.67-0.15
201612.549.026.51-0.01
201712.959.096.47+0.06
201812.779.126.80-0.10
201913.039.086.52+0.02
202013.049.156.70-0.11
202113.189.657.30-0.48
202215.6511.328.57+0.61
202315.7111.248.20-0.29
202415.8711.818.83-0.61

10 rows from EIA retail sales.

CSV

Largest utilities, SAIDI

Median of 12 reporters here: 98.2 minutes.

min

  • Commonwealth Edison Co35.6
  • Ameren Illinois Company120.6
  • Corn Belt Energy Corporation152.0
  • Southwestern Electric Coop Inc263.0
  • Southeastern IL Elec Coop, Inc137.7
  • Jo-Carroll Energy, Inc48.9
  • Tri-County Electric Coop, Inc (IL)63.7
  • Eastern Illinois Elec Coop194.4
  • U.S. median99.5

Illinois, SAIDI of the largest Illinois utilities: EIA-861 survey.

CSV

Median SAIDI by year, 2015-2024

128 minutes in 2015, 98 in 2024.

Median SAIDI by year, Illinois, 2015 to 2024: 10 rows
YearIllinois medianGap to U.S. median reporter
2015128+27
2016104+2
2017118+23
2018121+20
2019132+34
202097+0
2021119+23
2022118+15
202398-1
202498-1

10 rows from EIA-861 survey.

CSV

Who serves each county

Illinois counties shaded by utilities listing them; the table shows the top twelve.

Illinois counties by number of electric utilitiesJeffersonLoganPerryMarshallDouglasHamiltonJohnsonBureauRichlandMcLeanClintonWayneChampaignMontgomeryWashingtonWhiteDuPageClarkGallatinJo DaviessWilliamsonWoodfordFayetteKendallEdgarTazewellStephensonDe WittBondCassMenardStarkJasperKnoxPutnamMacoupinChristianMadisonLawrenceEdwardsMercerWillSalineMassacVermilionWhitesideLeeMorganMasonRandolphUnionBooneMonroeIroquoisCarrollCrawfordJacksonWinnebagoColesOgleMcHenryPiattMoultrieEffinghamMarionClayHenryFordMaconCumberlandFranklinLivingstonWabashSt. ClairLaSalleKaneShelbySangamonBrownSchuylerMcDonoughWarrenDeKalbCookPulaskiPopeHancockAlexanderLakeGrundyRock IslandPeoriaScottJerseyHendersonPikeHardinKankakeeAdamsCalhounGreeneFulton

1 utility 2 3 4 or more

Illinois counties: first 12 of 102 rows
CountyUtilitiesNames
Clay5Ameren Illinois Company; Norris Electric Coop; Southwestern Electric Coop Inc; Tri-County Electric Coop, Inc (IL); Wayne-White Counties Elec Coop
Franklin5Ameren Illinois Company; Egyptian Electric Coop Assn; Southeastern IL Elec Coop, Inc; Tri-County Electric Coop, Inc (IL); Wayne-White Counties Elec Coop
Shelby5Ameren Illinois Company; Coles-Moultrie Electric Coop; Norris Electric Coop; Shelby Electric Coop, Inc; Southwestern Electric Coop Inc
Cumberland4Ameren Illinois Company; Coles-Moultrie Electric Coop; Norris Electric Coop; Shelby Electric Coop, Inc
Effingham4Ameren Illinois Company; Norris Electric Coop; Shelby Electric Coop, Inc; Southwestern Electric Coop Inc
Ford4Ameren Illinois Company; Commonwealth Edison Co; Corn Belt Energy Corporation; Eastern Illinois Elec Coop
Henry4Ameren Illinois Company; Corn Belt Energy Corporation; Jo-Carroll Energy, Inc; MidAmerican Energy Co
Kane4City of Batavia; City of Geneva- (IL); City of St Charles; Commonwealth Edison Co
LaSalle4Ameren Illinois Company; City of Peru; Commonwealth Edison Co; Corn Belt Energy Corporation
Livingston4Ameren Illinois Company; Commonwealth Edison Co; Corn Belt Energy Corporation; Eastern Illinois Elec Coop
Macon4Ameren Illinois Company; Corn Belt Energy Corporation; Menard Electric Coop; Shelby Electric Coop, Inc
Marion4Ameren Illinois Company; Southwestern Electric Coop Inc; Tri-County Electric Coop, Inc (IL); Wayne-White Counties Elec Coop

102 rows from EIA-861 Service Territory, Census 2023 county outlines.

CSV

Analyst note

Illinois residential power was 21st highest of 51 in 2015 at 12.50 ¢ and is 19th in 2024 at 15.87 ¢, so the state moved up 2 places. The U.S. figure went 12.65 to 16.48 ¢ while Illinois went +27.0%. The biggest annual move was 2022 at +18.7%; the latest year, 2024, came in at +1.0% against +3.0% for the U.S. Business customers paid 9.02 ¢ in 2015 and 11.81 ¢ in 2024, a gap to homes of -3.48 ¢ then and -4.06 ¢ now; industry went from 6.67 to 8.83 ¢ (+32.4%). Reliability changed little at the 8 Illinois utilities that report in both years: their median SAIDI went from 128 minutes in 2015 to 129 in 2024, +1%, against a U.S. median reporter of 99. Commonwealth Edison Co is the largest by accounts with 4,130,749, 68.4% of the 6,036,676 accounts in Illinois, and the top three hold 89.9%.

Illinois ranks 19th of 51 on residential price (15.87 ¢), mid-table, and 3.7% under the national average. Since 2015 the residential price moved +27.0% against +30.3% nationally, so Illinois has stayed close to the national pace, within 3.3 points.

Businesses pay 4.06 ¢ less than households here (-25.6%); business is under home price in 51 of 51. The median of 12 reporting utilities is 98.2 SAIDI minutes, 1% under the national median. The top three utilities hold 94.0% of accounts, so a few reliability records set the state picture.

By revenue, Illinois electricity splits 43.9% residential, 32.9% commercial and 23.2% industrial; by kWh the split is 33.8%, 34.1% and 32.2%. Residential accounts are the largest revenue source here. Home accounts are 89.3% of 6,036,673 accounts and use 693 kWh a month, a commercial account 5,904 and an industrial one 625,717.

Facts

Residents (ACS 2023)
12,692,6535,001,904 households
Electric accounts
6,036,676476 per 1,000 residents
Residential price
15.87 ¢/kWh-0.61 ¢ against the U.S.
Commercial price
11.81 ¢/kWh-0.94 ¢ against the U.S.
Industrial price
8.83 ¢/kWh+0.70 ¢ against the U.S.
Residential since 2015
+27.0%-3.3 points vs U.S.
Retail sales
133.2 TWh10,496 kWh a resident
Utilities listed
2313 cooperative, 7 municipal, 3 investor owned
Median SAIDI
98.2 min12 utilities, 0.99x U.S.
Net-metered capacity
1,733 MW150,084 installations
Top three utilities
94.0%of utility accounts
Business minus home
-4.06 ¢-25.6% of the home price
Counties with 2+ utilities
78 of 102most: Shelby, 5 utilities

Data tables

Illinois: price by year

YearHomeBusinessIndustryHome vs U.S.
201512.509.026.67-0.15
201612.549.026.51-0.01
201712.959.096.47+0.06
201812.779.126.80-0.10
201913.039.086.52+0.02
202013.049.156.70-0.11
202113.189.657.30-0.48
202215.6511.328.57+0.61
202315.7111.248.20-0.29
202415.8711.818.83-0.61

Questions on Illinois

What is the average residential electricity price in Illinois?

15.87 cents in 2024, which is -0.61 cents against the U.S. figure.

How has Illinois residential power changed since 2015?

It went from 12.50 to 15.87 cents, +27.0% in total, -3.3 points against the U.S.

How many electric utilities operate in Illinois?

23 utilities have Illinois as their largest state, and 12 of them report SAIDI.

What net-metered capacity do Illinois utilities report?

1,733 MW over 150,084 installations.

How many accounts per 1,000 people in Illinois?

476: 6,036,676 accounts for 12,692,653 residents.

Is commercial power cheaper than residential in Illinois?

Businesses pay 11.81 ¢ and homes 15.87 ¢, a difference of -4.06 ¢.

What did Illinois residential electricity cost in 2025?

Illinois averaged 17.69 cents per kWh, +11.5% against 15.87 in 2024, and 17 of 51 among states.

Are Illinois residential electricity prices rising in 2026?

Illinois is +3.6 points against the U.S.: 19.22 cents from January to July 2026, +10.7% on 2025.

When in 2025 did Illinois residential power cost most, September or January?

September at 19.05 cents in Illinois; January was the lowest at 15.78, a 21% spread.

Does Illinois residential power cost more than the national average in 2026?

1.00 cents above the national average; Illinois 19.22 cents over January to July 2026, +10.7% on 2025.

States with a similar home price

Closest to Illinois at 15.87 ¢/kWh, by 2024 average home price.

More on Illinois

How Illinois ranks and compares

Illinois is 35th cheapest of 51 on price (17.69 ¢); 1st of 44 on outage minutes (57 min); 12th cleanest grid (472 lb CO2 per MWh); 42nd highest income burden (1.87%).

All rankings, price, income and outages explorer, compare two states.

Help paying the bill in Illinois

Illinois has $199.8 million in federal energy-assistance money for FY2026, shutoff rules and phone lines. Open the Illinois help page.

Counties in Illinois ranked: highest and lowest energy burden, storm reports and old homes, county by county.

More on Illinois

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In 2025 Illinois homes paid 17.69 ¢/kWh: rank 17 of 51, 2.3% above the U.S. average of 17.30 ¢ (2024: 15.87 ¢).

Cite this page

Underlying data are U.S. government works (EIA, Census Bureau). Our tables and charts: CC BY 4.0, credit Electric Consumer. The access date fills in when you open this page.

APA

Electric Consumer. (2026). Illinois electricity rates 2025: price per kWh, utilities and outages. Data as of 2 October 2026. Retrieved [date accessed], from https://electricconsumer.org/states/illinois.html

MLA

Electric Consumer. “Illinois electricity rates 2025: price per kWh, utilities and outages.” Electric Consumer, data as of 2 October 2026, https://electricconsumer.org/states/illinois.html. Accessed [date accessed].

Chicago

Electric Consumer. “Illinois electricity rates 2025: price per kWh, utilities and outages.” Data as of 2 October 2026. Accessed [date accessed]. https://electricconsumer.org/states/illinois.html.

BibTeX

@misc{usedata_states_illinois,
  author = "Electric Consumer",
  title = {Illinois electricity rates 2025: price per kWh, utilities and outages},
  year = {2026},
  url = {https://electricconsumer.org/states/illinois.html},
  note = {Data as of 2 October 2026. Accessed [date accessed]}
}
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