ComEd electric rates, bills and the recent increase

ComEd's price per kWh, by period

ComEd, legally Commonwealth Edison Company, carries electricity to 3,753,924 homes in northern Illinois, 71.3% of the state's residential customers. In 2025, 3,020,130 of them also bought their power from ComEd, and those full-service (bundled) customers paid an average of 17.71¢ per kWh¹. That annual figure is EIA's final one. Two more recent readings come from EIA's monthly survey, in which 2026 months are preliminary: 19.33¢ per kWh over the 12 months from September 2025 to August 2026, and 19.28¢ per kWh in August 2026³ alone, +4.7%² on the same month a year earlier.

Each figure is average revenue per kWh: what full-service customers paid in total, the monthly customer charge, delivery charges, supply, the purchased electricity adjustment and riders, divided by the kWh they used. Most taxes are excluded. No household is billed exactly this amount per kWh; a small apartment pays more per kWh than the average, a large house less.

Among the 16 Illinois utilities with 10,000 or more full-service homes, ComEd's 2025 average was the 2nd highest, 0.2% above the Illinois average. Nationally it ranked 52nd highest of 177 large utilities and was 0.4% below the national average for investor-owned utilities; the median of those large utilities was 15.07¢ per kWh¹.

ComEdIllinois average, all providers

Source: EIA-861M monthly sales and revenue by utility; EIA, Electric Power Monthly / EIA-861M sales and revenue by state. Residential revenue divided by kWh in each month, as reported to EIA's monthly survey (EIA-861M; months since January 2026 preliminary). Bundled (default-service) customers only.

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Month	ComEd (¢/kWh)	kWh per customer	Bill per customer
January 2025	15.53¢	665	$103.26
February 2025	16.52¢	554	$91.60
March 2025	17.48¢	514	$89.85
April 2025	17.80¢	441	$78.50
May 2025	19.15¢	458	$87.67
June 2025	18.99¢	803	$152.40
July 2025	16.75¢	944	$158.17
August 2025	18.42¢	778	$143.30
September 2025	18.62¢	538	$100.21
October 2025	18.04¢	489	$88.22
November 2025	17.63¢	496	$87.38
December 2025	18.03¢	588	$105.96
January 2026	16.89¢	659	$111.31
February 2026	17.71¢	591	$104.66
March 2026	18.33¢	521	$95.52
April 2026	20.91¢	458	$95.83
May 2026	28.89¢	399	$115.18
June 2026	20.92¢	580	$121.27
July 2026	19.64¢	864	$169.72
August 2026	19.28¢	747	$143.96

How much prices and bills rose

From 2024 to 2025, ComEd's full-service average went from 15.22¢ per kWh to 17.71¢ per kWh, a rise of 16.4%. Downstate, Ameren Illinois's rose 9.4% over the same years. The average ComEd bill moved from $88.72 to $107.32, +21.0%, because use per home also grew, from 583 kWh⁴ to 606 kWh¹ a month.

The increase was not confined to the supply side. For customers who buy their power from a supplier, ComEd bills delivery alone, and that delivery-only average rose from 7.93¢ per kWh⁴ in 2024 to 8.89¢ per kWh in 2025 (+12.1%¹).

On the supply side, ComEd sits in the PJM¹ wholesale market. Lawrence Berkeley National Laboratory's 2026 retail price trends update reports that higher PJM capacity prices added 0.9¢ per kWh to average wholesale costs in 2025 and that a further 0.6¢ per kWh⁵ was expected in 2026.

Prices kept rising in 2026. The 12-month average to August 2026, 19.33¢ per kWh, is above the 2025 annual figure, and the August 2026³ reading was +4.7%² on a year earlier (both preliminary). ComEd's tariff changes and rate cases are filed with the Illinois Commerce Commission, whose e-Docket lists current and past cases; the guide to rate increases explains how such decisions reach a bill.

Three different prices on a ComEd bill

ComEd customers see three averages quoted, and they measure different things.

• Full service (bundled): 17.71¢ per kWh in 2025, supply and delivery together, for the homes that stay on ComEd's default supply.
• Delivery only: 8.89¢ per kWh in 2025, what ComEd billed the 733,794 homes that buy power from a supplier or a municipal aggregation program. Their average delivery bill was $61.15 a month for 688 kWh¹; the supplier's charge comes on top, at whatever price that contract set.
• Price to Compare (supply and transmission): 10.103¢ per kWh for November 2026⁶, the supply and transmission charges of ComEd's default service for residential non-space-heat customers, published monthly by the Illinois Commerce Commission on Plug In Illinois.

The first is a whole-bill average, the second a delivery-only average, the third a current supply-and-transmission price; they are not added together or set against one another. In 2025, 19.5% of ComEd's residential customers bought supply elsewhere, against 44.7%¹ in Ameren Illinois's territory.

Twelve months before November 2026, the Price to Compare was 9.689¢ per kWh. Its highest value since January 2017 was 11.049¢ per kWh⁶, in September 2022. The Illinois retail choice guide covers how offers are compared.

Less use per home, smaller bills than PJM peers

ComEd's prices are not low for Illinois, but its bills are low among the large delivery utilities of the PJM market. Its homes use less electricity. In 2025, the average ComEd full-service home used 606 kWh a month; at PECO the figure was 755 kWh, at BGE 878 kWh, at PPL Electric Utilities 880 kWh and at AEP Ohio 944 kWh. Each of those utilities also had a higher full-service average than ComEd's 17.71¢ per kWh: 18.02¢ per kWh, 20.19¢ per kWh, 18.60¢ per kWh and 18.97¢ per kWh¹.

PSE&G in New Jersey shows the other combination: its homes used 561 kWh a month, slightly less than ComEd's, but paid 25.03¢ per kWh, so its 2025 average bill was $140.45 against ComEd's $107.32¹.

ComEd (IL)$107.32

PECO (PA)$136.07

PSE&G (NJ)$140.45

PPL Electric Utilities (PA)$163.72

BGE (MD)$177.19

AEP Ohio (OH)$179.10

Source: EIA-861 annual electric power industry report, 2025 final. EIA-861 2025 final. Average revenue per kWh is all charges divided by kWh; it is not a tariff rate.

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Utility	average monthly residential bill
ComEd (IL)	$107.32
PECO (PA)	$136.07
PSE&G (NJ)	$140.45
PPL Electric Utilities (PA)	$163.72
BGE (MD)	$177.19
AEP Ohio (OH)	$179.10

The same effect separates ComEd from Ameren Illinois: Ameren's full-service homes paid less per kWh, 16.70¢ per kWh, but used 888 kWh a month and averaged $148.32¹.

July use more than double May's

EIA's monthly data for ComEd show a summer peak. Over the 12 months from September 2025 to August 2026, use per home ran from 399 kWh in May 2026 to 864 kWh in July 2026. The average bill moved much less, from $115.18 to $169.72², because part of each bill does not depend on kWh. Spread over fewer kWh, that fixed part raises the average price per kWh in low-use months.

538Sep

489Oct

496Nov

588Dec

659Jan

591Feb

521Mar

458Apr

399May

580Jun

864Jul

747Aug

Source: EIA-861M monthly sales and revenue by utility. kWh per residential customer in each month (EIA-861M; months since January 2026 preliminary). The table adds the average bill and price for the month.

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Month	kWh per customer	Bill per customer	¢/kWh
September 2025	538	$100.21	18.62¢
October 2025	489	$88.22	18.04¢
November 2025	496	$87.38	17.63¢
December 2025	588	$105.96	18.03¢
January 2026	659	$111.31	16.89¢
February 2026	591	$104.66	17.71¢
March 2026	521	$95.52	18.33¢
April 2026	458	$95.83	20.91¢
May 2026	399	$115.18	28.89¢
June 2026	580	$121.27	20.92¢
July 2026	864	$169.72	19.64¢
August 2026	747	$143.96	19.28¢

Across those 12 months the average home used 577 kWh a month and paid $111.58².

Fewer outage minutes than the state average

ComEd customers averaged 77 minutes without power in 2025 counting major storms, fewer than the Illinois average of 144 minutes, and 38 minutes on days without major events. The average customer had 0.66 interruptions. Ameren Illinois customers averaged 287 minutes⁷ the same year. All figures follow the IEEE 1366 standard.

PSE&G (NJ)66

ComEd (IL)77

BGE (MD)175

AEP Ohio (OH)221

Ameren Illinois (IL)287

PECO (PA)328

Source: EIA-861 2025, reliability. EIA-861 2025 final. Average revenue per kWh is all charges divided by kWh; it is not a tariff rate.

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Utility	outage minutes per customer (all events)
PSE&G (NJ)	66
ComEd (IL)	77
BGE (MD)	175
AEP Ohio (OH)	221
Ameren Illinois (IL)	287
PECO (PA)	328

Hourly pricing, peak rebates and rooftop solar

Advanced meters covered 99.9% of ComEd's residential meters in 2025. The time-varying programs ComEd reported to EIA are real-time pricing and critical peak rebates, with 382,255 residential customers enrolled, 10.2%⁸ of those on its wires. The time-of-use guide explains how prices that change by the hour or by the peak affect a bill.

Rooftop solar is less common than downstate: 73,159 net-metered residential installations with 552.3 megawatts, or 19.5 per 1,000 residential customers, against 37.4⁸ at Ameren Illinois in 2025.

The counties ComEd serves

EIA's 2025 service-territory records place ComEd in 24 counties of northern Illinois, from Jo Daviess and Carroll in the northwest to Cook, DuPage and Kankakee. In 4 of them no other distribution utility reports customers; in the other 20⁹, at least one other utility, such as a municipal system or a cooperative, also reports customers. There is no separate Chicago or suburban price in EIA's data, and a ZIP code does not settle which utility serves a street: ComEd's own service map does.

ComEd onlyComEd and other utilitiesOther utilities

Source: EIA-861 2025, service territory; Census Bureau, Cartographic boundary file, counties. EIA-861 2025 service territory: 24 counties. Counts whole counties even where the utility serves only part of one; check the utility's own service-area map for an address.

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County	Other utilities reporting service
Boone County	Rock Energy Cooperative
Bureau County	Ameren Illinois, Corn Belt Energy Corporation, City of Princeton, Village of Ladd
Carroll County	Jo-Carroll Energy
Cook County	Village of Winnetka, University of Illinois
DeKalb County	none
DuPage County	City of Naperville, City of St Charles
Ford County	Ameren Illinois, Corn Belt Energy Corporation, Eastern Illinois Electric Cooperative
Grundy County	none
Jo Daviess County	Jo-Carroll Energy, Scenic Rivers Energy Cooperative
Kane County	City of St Charles, City of Batavia, City of Geneva
Kankakee County	none
Kendall County	Ameren Illinois, Corn Belt Energy Corporation
Lake County	none
LaSalle County	Ameren Illinois, Corn Belt Energy Corporation, City of Peru, City of Oglesby
Lee County	Rochelle Municipal Utilities
Livingston County	Ameren Illinois, Corn Belt Energy Corporation, Eastern Illinois Electric Cooperative
Marshall County	Ameren Illinois, Corn Belt Energy Corporation
McHenry County	Rock Energy Cooperative
Ogle County	Rochelle Municipal Utilities
Stephenson County	Rock Energy Cooperative, Scenic Rivers Energy Cooperative
Whiteside County	Jo-Carroll Energy, City of Rock Falls, City of Albany
Will County	City of Naperville
Winnebago County	Rock Energy Cooperative
Woodford County	Ameren Illinois, Corn Belt Energy Corporation

Business customers

ComEd's full-service commercial customers paid an average of 15.13¢ per kWh in 2025 and its 184 full-service industrial accounts 8.94¢ per kWh; across all customers the average was 16.57¢ per kWh. For businesses buying power from a supplier, ComEd's delivery-only average was 5.27¢ per kWh for commercial and 2.71¢ per kWh¹ for industrial customers. The Illinois page puts ComEd in the state picture.