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

Commonwealth Edison Co: rates, outages and net metering

Roughly 4,130,749 Illinois accounts belong to Commonwealth Edison Co, classed by EIA as investor owned; the residential count is 3,727,675. Among the 6 Exelon utilities listed here it is cheapest for homes, -2.85 ¢ from their median.

Byron Nuclear Generating Station in Ogle County, northern Illinois
Byron Nuclear Generating Station. Photo by Bill Tracey, w:Flickr user iluvcocacola, CC BY 2.0, Wikimedia Commons. Illustrative, not a listed utility's plant.

Commonwealth Edison Co: 610 kWh a month costs roughly $82 in energy at 13.39 ¢/kWh, -15.6% on the Illinois average of 15.87 ¢.

Among the 6 Exelon utilities listed here it is cheapest for homes, -2.85 ¢ from their median.

Commonwealth Edison Co against its group: Exelon

Home price place, Exelon group
1 of 6-2.85 ¢ from the median of 16.24 ¢

Take the 6 Exelon utilities listed here, sorted by home price: Commonwealth Edison Co is the cheapest at 13.39 ¢, while the group median is 16.24 ¢. The most expensive is Atlantic City Electric Co (NJ) at 22.57 ¢, 9.18 ¢ above; the spread from top to bottom is 9.18 ¢.

On outage minutes it ranks 1 of 6 (1 = fewest), 36 against a group median of 55. It is the largest of them, 4,130,749 accounts, 2.4 times PECO Energy Co.

How it compares

Commonwealth Edison Co
Commonwealth Edison Co, 2024HomeBusinessBillSAIDI
Commonwealth Edison CoLowest in this table13.39 ¢/kWh7.34 ¢/kWh$82at 610 kWh36 minSAIDI
Illinois average against this company, which is 4 of 7 on price+2.48 ¢/kWhcompany 15.6% below+4.47 ¢/kWhcompany 37.9% below+$15a month at 610 kWh+63 mincompany 63 below
Southwestern Electric Coop Inc13.68 ¢/kWhcompany 2.1% below13.13 ¢/kWhcompany 44.1% below$832 more than company263 mincompany 227 below

Compare 23 Illinois companies

Commonwealth Edison Co: 2025

Commonwealth Edison Co: +18.0% on 2024 for homes, Illinois +11.5%.

Commonwealth Edison Co home price, 2025
15.80 ¢/kWh+18.0% on 2024, early release
Commonwealth Edison Co SAIDI, 2025
38 min+7% on 2024, early release
Commonwealth Edison Co against Illinois, 2025
+6.5 pointsCommonwealth Edison Co +18.0%, Illinois +11.5%, price in Illinois 17.69 ¢

Commonwealth Edison Co: 15.80 ¢/kWh in the 2025 early release, +18.0% from 13.39 ¢; Illinois as a whole went +11.5%, so Commonwealth Edison Co ran ahead of it by 6.5 points. Its SAIDI is 38 minutes against 36 in 2024.

Carbon context

Commonwealth Edison Co serves 3,727,675 homes in Illinois. At 610 kWh a month that is about 130 kg of CO₂, or 1,566 kg a year, at the Illinois plant rate, state generation and not this utility: Illinois generation mix.

Commonwealth Edison Co charts

Residential price since 2015: 13.39 ¢ in 2024

9.23 ¢ in 2015, 13.39 ¢ in 2024 (+45.1%); Illinois 12.50 to 15.87 ¢.

Commonwealth Edison Co residential price 2015-2024, 2015 to 2024: 10 rows
YearCommonwealth Edison CoGap to Illinois residentialGap to U.S. residential
20159.23-3.27-3.42
20169.37-3.17-3.18
201710.33-2.62-2.56
201810.43-2.34-2.44
201910.87-2.16-2.14
202011.03-2.01-2.12
202111.41-1.77-2.25
202214.41-1.24-0.63
202313.15-2.56-2.85
202413.39-2.48-3.09

10 rows from EIA retail sales.

CSV

Commonwealth Edison Co SAIDI, 2015-2024

72 min in 2015, 36 in 2024.

Commonwealth Edison Co SAIDI by year, 2015 to 2024: 10 rows
YearCommonwealth Edison Co, no major events
201572
201663
201755
201858
201951
202040
202143
202238
202335
202436

10 rows from EIA-861 survey.

CSV

Reliability: SAIDI 35.6 min

35.6 min, 0.36x the median reporter, rank 108 of 673.

min

  • Company, no major events35.6
  • Company, with major events131.9

Commonwealth Edison Co, Reliability: EIA-861 survey.

CSV

Analyst note

From 9.23 ¢ in 2015 to 13.39 ¢ in 2024, a move of +45.1%: Commonwealth Edison Co outpaced its state (+27.0%) by 18.2 points, and +14.8 points against the U.S. Full-service customers alone pay 15.22 ¢ per EIA, against 13.39 ¢ for all rows: buyers of energy elsewhere pay Commonwealth Edison Co for delivery only. Commonwealth Edison Co's sharpest move came in 2022, +26.3%. The high is 14.41 ¢ (2022) and the low 9.23 ¢ (2015). 2024: +1.8% here, +1.0% for the Illinois average. SAIDI at Commonwealth Edison Co (major events excluded) fell from 72 minutes in 2015 to 36 in 2024, -51%; best year 2023 at 35. Against the national median, Commonwealth Edison Co came in lower on SAIDI in 10 of 10 years, and 2024 ended at 36 minutes, -64 from the median. 2020: 341 minutes with major events, 40 without, the widest gap of any year. Commonwealth Edison Co has 3 cheaper and 3 higher-priced Illinois peers among 7 with 20,000+ homes. Next cheaper, City of Naperville, bills 12.98 ¢ (-0.41). Next higher-priced, Southwestern Electric Coop Inc, bills 13.68 ¢ (+0.29).

The data favor customers here: bills run 15.6% under the Illinois norm, and 36 outage minutes sit 64% under the national median.

Home accounts at Commonwealth Edison Co went from 3,520,329 in 2015 to 3,727,675 in 2024, +5.9%. Business customers paid 0.55 times the home price in 2024 (7.34 against 13.39 ¢); the ratio was 0.47 in 2015. SAIFI went from 0.86 in 2015 to 0.49 in 2024, between 0.48 and 0.86.

Facts

Customer accounts
4,130,74968.4% of Illinois total
Residential accounts
3,727,67569.1% of Illinois homes
Commercial accounts
401,0219.7% of the base
Residential rate
13.39 ¢/kWhplace 4 of 7, -15.6% against the state
Commercial rate
7.34 ¢/kWhplace 2 of 18, -37.9% against the state
SAIDI, no major events
35.6 minbetter than 84% of reporters
SAIFI, no major events
0.490.48x the median
SAIDI with major events
131.9 min73.0% from event days
Net-metered capacity
1,006.2 MW98,936 installations
Counties served
24all in Illinois
Average residential use
7,317 kWh/yr610 a month
Implied monthly bill
$82-$19 on the U.S. rate, 610 kWh
Residential rate since 2015
+45.1%9.23 to 13.39 ¢/kWh
SAIDI trend
-51%72 min in 2015, 36 in 2024

Data tables

2024 by sector, Commonwealth Edison Co

Commonwealth Edison Co sectorAccountsRate ¢/kWhGap to Illinois ¢/kWh
Residential3,727,67513.39-2.48
Commercial401,0217.34-4.47

Year by year, Commonwealth Edison Co

YearHome accounts, Commonwealth Edison CoHome ¢Business ¢RatioSAIDISAIFI
20153,520,3299.234.360.47720.86
20163,574,5199.374.140.44630.72
20173,608,35410.334.350.42550.66
20183,635,11110.434.690.45580.70
20193,657,89610.874.750.44510.63
20203,681,92911.034.920.45400.55
20213,699,41511.415.330.47430.59
20223,713,75514.416.420.45380.52
20233,732,45913.155.980.45350.48
20243,727,67513.397.340.55360.49

Peers of Commonwealth Edison Co in Illinois, place 4 of 7 on home price

Utility near Commonwealth Edison Co on priceSAIDI min, gap to Commonwealth Edison CoHome ¢, gap to Commonwealth Edison CoGap % to Commonwealth Edison CoAccounts, Commonwealth Edison Co = 1
1. Ameren Illinois Company+85-1.64-12.2%0.30
2. City of SpringfieldNo data-1.44-10.7%0.02
3. City of NapervilleNo data-0.41-3.1%0.02
4. Commonwealth Edison Co (this utility)3613.39-1.00
5. Southwestern Electric Coop Inc+227+0.29+2.2%0.01
6. Southeastern IL Elec Coop, Inc+102+1.07+8.0%0.01
7. Corn Belt Energy Corporation+116+2.37+17.7%0.01

Who buys Commonwealth Edison Co's electricity

Class at Commonwealth Edison CoAccountsOf Commonwealth Edison Co accountsOf Commonwealth Edison Co MWh soldkWh a year per Commonwealth Edison Co account
Residential3,727,67590.2%32.3%7,317
Commercial401,0219.7%34.1%71,845
Industrial and other2,0510.05%33.5%13,796,268

Commonwealth Edison Co among Exelon group

Commonwealth Edison Co and its neighbours on priceSAIDI min, gap to Commonwealth Edison CoHome ¢, gap to Commonwealth Edison CoAccounts, Commonwealth Edison Co = 1
1. Commonwealth Edison Co (IL, this utility)3613.391.00
2. PECO Energy Co (PA)+24+1.350.41
3. Baltimore Gas & Electric Co (MD)+31+2.730.33
4. Delmarva Power (DE)+32+2.980.08
5. Potomac Electric Power Co (MD)+11+5.340.15
6. Atlantic City Electric Co (NJ)+14+9.180.14

Commonwealth Edison Co: meters, rate options and solar

MeasureCommonwealth Edison CoIllinois contextCommonwealth Edison Co detail
Commonwealth Edison Co home meters on AMI99.9%Illinois 93.6%3,862,787 of 3,866,764 meters
Time-of-use rate for Commonwealth Edison Co homesNot on file7 of 23 Illinois utilities offer one372,067 homes on dynamic pricing, 9.98% of 3,727,675
Net-metered installations98,93691% residential24.2 homes per 1,000 accounts, 10.2 kW average

Monthly energy cost by use, Commonwealth Edison Co

kWhShare of a 610 kWh monthCost a month at 13.39 ¢vs U.S.Cost a year
25041%$33.48-$7.72$402
50082%$66.96-$15.44$803
750123%$100.44-$23.16$1,205
1,000164%$133.92-$30.88$1,607
1,500246%$200.87-$46.33$2,410
2,000328%$267.83-$61.77$3,214

Outage record, Commonwealth Edison Co

Measure, Commonwealth Edison No eventsAll eventsConverted
SAIDI minutes35.6131.90.59 h
SAIFI interruptions0.4900.6802.04 yr apart
CAIDI minutes72.7194.01.21 h

Territory of Commonwealth Edison Co

24 Illinois counties, region RFC:

Counties served by Commonwealth Edison CoMarshallBureauDeKalbFordCookWillDuPageLakeGrundyWhitesideLivingstonLeeJo DaviessWoodfordBooneKankakeeLaSalleKaneCarrollKendallWinnebagoOgleStephensonMcHenry

Illinois other states: 24 of 24 counties of Commonwealth Edison Co drawn

Commonwealth Edison Co: 24 counties listed by EIA-861, Census 2023 outlines.

CSV
County list
  • Boone
  • Bureau
  • Carroll
  • Cook
  • DeKalb
  • DuPage
  • Ford
  • Grundy
  • Jo Daviess
  • Kane
  • Kankakee
  • Kendall
  • LaSalle
  • Lake
  • Lee
  • Livingston
  • Marshall
  • McHenry
  • Ogle
  • Stephenson
  • Whiteside
  • Will
  • Winnebago
  • Woodford

Questions on Commonwealth Edison Co

How many customers does Commonwealth Edison Co serve in Illinois?

4,130,749 accounts in 2024: residential 3,727,675, commercial 401,021, industrial 2,051.

What is the average residential rate of Commonwealth Edison Co?

In 2024 homes paid 13.39 cents; against the Illinois average that is -15.6%.

How reliable is Commonwealth Edison Co by SAIDI and SAIFI?

SAIDI 35.6 min and SAIFI 0.49 a year, major events excluded; ratio to the national median 0.36, CAIDI 73 min.

How much solar net metering is on the Commonwealth Edison Co grid?

98,936 installations with 1,006.2 MW, of which residential installations number 90,324.

What is the monthly bill at Commonwealth Edison Co for average use?

610 kWh at 13.39 cents comes to about $82, energy only.

How does Commonwealth Edison Co rank on price within Illinois?

Rank 4 of 7 in Illinois on price, -15.6% against the state average; 3 charge less than 13.39 ¢.

What share of Commonwealth Edison Co sales do homes buy?

Homes take 32.3% of 84,381,379 MWh, commercial accounts 34.1%, industrial and other 33.5%; the 401,021 commercial accounts use 71,845 kWh each, 9.8 times a home.

At Commonwealth Edison Co, are smart meters in homes, with a TOU option?

3,862,787 of 3,866,764 home meters are AMI, 99.9%. Commonwealth Edison Co reports no home time-of-use rate; 7 of 23 Illinois filers do.

Has Commonwealth Edison Co moved up the Illinois price list since 2015?

2nd cheapest of 7 in 2015, 4th of 7 in 2024; its price rose 45.1% while Illinois rose 27.0%.

Where does Commonwealth Edison Co stand among 5 peers?

Place 1 of 6 on home price at 13.39 ¢ (Exelon group); median 16.24 ¢, cheapest member 13.39 ¢.

Did Commonwealth Edison Co cut or raise its 2025 home price?

15.80 cents per kWh, +18.0% on the 13.39 of 2024 (EIA early release for 2025).

Utilities with a similar home price

Home prices nearest to Commonwealth Edison Co at 13.39 ¢/kWh in 2024, among companies with a page here, any state.

More on Commonwealth Edison Co

Rate plans on file

16 home plan records, energy charges: 1.5 to 20.6 ¢/kWh.

Who offers time-of-use and tiered rates (17 Apr 2026 snapshot).

Primary sources for Commonwealth Edison Co: rates, outages and net metering

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Commonwealth Edison Co: 610 kWh a month costs roughly $82 in energy at 13.39 ¢/kWh, -15.6% on the Illinois average of 15.87 ¢.