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A ComEd bill for 1,000 kWh on Rate BES / Rate RDS is $179.41 in October 2026 (17.9¢ per kWh, before tax). In September (summer rates) it is $181.91. This calculator uses the ComEd Residential basic electric service (fixed-price supply) with retail delivery service tariff (Rate BES / Rate RDS) and its riders. Type the kWh from your bill. The result shows each charge on a different line.
A ComEd bill for 1,000 kWh on Rate BES / Rate RDS, with all charges, at the rates in effect at our last check on October 16, 2026:
| Billing month | Bill | Average price per kWh |
|---|---|---|
| September (summer rates) | $181.91 | 18.19¢ |
| October (non-summer rates) | $179.41 | 17.94¢ |
| Charge | Rate |
|---|---|
| Customer charge (Single family without electric space heat) | October: $14.61 per month |
| Standard metering service charge (Single family without electric space heat) | October: $3.88 per month |
| Distribution facilities charge (Single family without electric space heat) | October: 6.33928¢ per kWh |
| Illinois electricity distribution charge (Single family without electric space heat) | October: 0.12764¢ per kWh |
| Customer charge (Multi family without electric space heat) | October: $10.79 per month |
| Standard metering service charge (Multi family without electric space heat) | October: $3.89 per month |
| Distribution facilities charge (Multi family without electric space heat) | October: 4.87612¢ per kWh |
| Illinois electricity distribution charge (Multi family without electric space heat) | October: 0.12814¢ per kWh |
The average price includes the base rates and the riders. See all rates and riders, the example bills and the sources.
In 2025, the average ComEd home that bought its power from ComEd used 606 kWh a month and paid $107.32 a month (17.7¢ per kWh). The average for all homes in Illinois was $126.59 (716 kWh, 17.7¢ per kWh). These are yearly averages from the EIA-861 data of the U.S. Energy Information Administration, at the rates of 2025. See the average electric bill in Illinois and in each state. To turn the watts of an appliance into dollars, use the electricity cost calculator.
Rate cases of ComEd that are pending or were decided since 2025, from the official documents. The calculator above uses the rates in effect now; a pending request is not in it.
Decided · reconciliation
No account needed: all rate changes (RSS feed) · a monthly reminder for your calendar · save your bills in this browser. Each month, the bill comparison shows what 1,000 kWh costs at every utility.
Official links and phone numbers from the ComEd website, checked October 20, 2026. This site is not part of ComEd: for an outage or a question about your account, use these links.
If you see a downed power line, stay away from it and call ComEd at 800-334-7661 or 911.
Terms on this tariff: Carbon-free resource adjustment, Coal plant retirement charge, Customer charge, Energy efficiency charge, Environmental cost recovery, Facilities charge, Income qualified discount, Low-income program charge, Purchased power adjustment, Renewable energy charge, Renewable portfolio standard (RPS), Supply charge, Transmission charge, Zero emission certificate (ZEC). See the electric bill glossary.
Do you want solar panels or an electric vehicle? The US solar calculator and the EV charging from solar calculator on ProSolarCalc estimate the savings and the payback. Also read what changed in the federal solar tax credit in 2026. Sri Murugan Systems also makes ProSolarCalc.
ComEd price to compare: 10.103¢ per kWh, since October 1, 2026. See the price to compare history since 2022.
Do you have your hourly usage file? Compare ComEd plans and supplier offers with your Green Button data.
Why is my ComEd bill so high? Check your bill against ComEd Rate BES / Rate RDS. How does ComEd compare? See the monthly bill comparison.
What does an appliance cost to run on this tariff? Use the appliance cost tool with ComEd Rate BES / Rate RDS.
These values come from the official tariff documents of ComEd. The Illinois Commerce Commission approves these tariffs.
| Season | Charge | Rate |
|---|---|---|
| Summer June to September billing periods | Customer charge (Single family without electric space heat) | June to August: $14.59 per month; September: $14.61 per month |
| Standard metering service charge (Single family without electric space heat) | June to August: $3.87 per month; September: $3.88 per month | |
| Distribution facilities charge (Single family without electric space heat) | June to August: 6.33301¢ per kWh; September: 6.33928¢ per kWh | |
| Illinois electricity distribution charge (Single family without electric space heat) | June to August: 0.12751¢ per kWh; September: 0.12764¢ per kWh | |
| Customer charge (Multi family without electric space heat) | June to August: $10.78 per month; September: $10.79 per month | |
| Standard metering service charge (Multi family without electric space heat) | June to August: $3.89 per month; September: $3.89 per month | |
| Distribution facilities charge (Multi family without electric space heat) | June to August: 4.87133¢ per kWh; September: 4.87612¢ per kWh | |
| Illinois electricity distribution charge (Multi family without electric space heat) | June to August: 0.128¢ per kWh; September: 0.12814¢ per kWh | |
| Electricity supply charge | June to August: 8.677¢ per kWh; September: 8.678¢ per kWh | |
| Transmission services charge | June to August: 1.722¢ per kWh; September: 1.723¢ per kWh | |
| Purchased electricity adjustment | June: 0.23¢ per kWh; July: 0.247¢ per kWh; August: −0.142¢ per kWh; September: −0.087¢ per kWh | |
| Nonsummer October to May billing periods | Customer charge (Single family without electric space heat) | October: $14.61 per month |
| Standard metering service charge (Single family without electric space heat) | October: $3.88 per month | |
| Distribution facilities charge (Single family without electric space heat) | October: 6.33928¢ per kWh | |
| Illinois electricity distribution charge (Single family without electric space heat) | October: 0.12764¢ per kWh | |
| Customer charge (Multi family without electric space heat) | October: $10.79 per month | |
| Standard metering service charge (Multi family without electric space heat) | October: $3.89 per month | |
| Distribution facilities charge (Multi family without electric space heat) | October: 4.87612¢ per kWh | |
| Illinois electricity distribution charge (Multi family without electric space heat) | October: 0.12814¢ per kWh | |
| Electricity supply charge | October: 8.413¢ per kWh | |
| Transmission services charge | October: 1.69¢ per kWh | |
| Purchased electricity adjustment | October: −1.551¢ per kWh |
| Item | Rate | Applies to | Schedule |
|---|---|---|---|
| Environmental cost recovery adjustment | January to May: not published yet June to July: 0.009¢ per kWh August to October: 0.007¢ per kWh November to December: not published yet |
All kWh | Environmental Cost Recovery Adjustment, Informational Sheet No. 8 (54th Revised) |
| Renewable portfolio standard | 0.516¢ per kWh | All kWh | Renewable Energy Adjustments, Informational Sheet No. 36 (12th Revised) |
| Zero emission standard | January to May: not published yet June to August: 0.087¢ per kWh September to October: 0.069¢ per kWh November to December: not published yet |
All kWh | Zero Emission Adjustments, Informational Sheet No. 37 (20th Revised) |
| Carbon-free energy resource adjustment The total of the CFR adjustment and the monthly reconciliation factor. ComEd publishes the reconciliation factor for each month shortly before the month. |
January to May: not published yet June: −1.344¢ per kWh July: −1.228¢ per kWh August: −0.69¢ per kWh September: −1.628¢ per kWh October: −0.115¢ per kWh November to December: not published yet |
All kWh | Carbon-Free Resource Adjustments, Informational Sheet No. 36.1 (49th Revised) |
| Energy efficiency programs | 0.369¢ per kWh | All kWh | Energy Efficiency Adjustments, Informational Sheet No. 38 (10th Revised) |
| Energy transition assistance charge | 0.084¢ per kWh | All kWh | Energy Transition Assistance Charge, Informational Sheet No. 39 (8th Revised) |
| Coal to solar adjustment | January to May: not published yet June to September: 0.009¢ per kWh October: 0.008¢ per kWh November to December: not published yet |
All kWh | Coal to Solar Adjustment, Informational Sheet No. 63 (10th Revised) |
| Low-income discount recovery | $1.35 per month | Each account | Low-Income Discount Recovery, Informational Sheet No. 74 (3rd Revised) |
| Low-income discount (single family) The discount is a percentage of the Total Company Bill: all the delivery, supply and taxes and fees lines (Rider LID, Sheet No. 499). The calculator applies it to all the lines above. If you type a tax rate, the tax is added after the discount; for a tax that is a percentage of the bill, the total is the same. The discount is limited so that the bill still pays the non-bypassable charges (Rider REA, Rider ZEA, Rider CFRA, Rider ETAC and transmission; Sheet No. 508). |
Tier 1: income up to 50% of FPL: -80% Tier 2: income over 50% and up to 100% of FPL: -60% Tier 3: income over 100% and up to 150% of FPL: -31% Tier 4: income over 150% and up to 200% of FPL: -6% Tier 5: income up to 300% of FPL: -5% |
All the lines above | Rider LID, Sheets No. 498 to 509, and Low-Income Discount, Informational Sheet No. 73 (3rd Revised) |
| Low-income discount (multi family) The discount is a percentage of the Total Company Bill: all the delivery, supply and taxes and fees lines (Rider LID, Sheet No. 499). The calculator applies it to all the lines above. If you type a tax rate, the tax is added after the discount; for a tax that is a percentage of the bill, the total is the same. The discount is limited so that the bill still pays the non-bypassable charges (Rider REA, Rider ZEA, Rider CFRA, Rider ETAC and transmission; Sheet No. 508). |
Tier 1: income up to 50% of FPL: -67% Tier 2: income over 50% and up to 100% of FPL: -21% Tier 3: income over 100% and up to 150% of FPL: -5% Tier 4: income over 150% and up to 200% of FPL: -5% Tier 5: income up to 300% of FPL: -5% |
All the lines above | Rider LID, Sheets No. 498 to 509, and Low-Income Discount, Informational Sheet No. 73 (3rd Revised) |
Minimum monthly bill: The customer charge and the standard metering service charge, plus the monthly charges that do not depend on kWh.
A bill that crosses a season or rate change: the calculator uses the season of the billing month and does not split it. ComEd's informational sheets give each charge for a monthly billing period. The summer supply charge applies in the June to September monthly billing periods.
These examples use 1,000 kWh. Delivery class: Single family without electric space heat. Low-income discount (Rider LID): No low-income discount. Each column uses the rates of the billing month in its heading. The examples do not include taxes.
| Line | Summer (September) | Nonsummer (October) |
|---|---|---|
| Customer charge | $14.61 | $14.61 |
| Standard metering service charge | $3.88 | $3.88 |
| Distribution facilities charge | $63.39 | $63.39 |
| Illinois electricity distribution charge | $1.28 | $1.28 |
| Electricity supply charge | $86.78 | $84.13 |
| Transmission services charge | $17.23 | $16.90 |
| Purchased electricity adjustment | −$0.87 | −$15.51 |
| Environmental cost recovery adjustment | $0.07 | $0.07 |
| Renewable portfolio standard | $5.16 | $5.16 |
| Zero emission standard | $0.69 | $0.69 |
| Carbon-free energy resource adjustment | −$16.28 | −$1.15 |
| Energy efficiency programs | $3.69 | $3.69 |
| Energy transition assistance charge | $0.84 | $0.84 |
| Coal to solar adjustment | $0.09 | $0.08 |
| Low-income discount recovery | $1.35 | $1.35 |
| Total before tax | $181.91 | $179.41 |
The calculator rounds each line to the cent. Each percentage uses the rounded lines.
We read each value from the official documents below. The approval column shows the docket, order or advice number that is printed on each sheet. Last check: October 16, 2026.
| Document | Used for | Effective | Approval |
|---|---|---|---|
| Delivery Service Charges, Informational Sheet No. 64.1 (2026), with Informational Sheets No. 9, 18, 20, 62 and 65 | Customer charge, standard metering service charge, customer charge, standard metering service charge | 2026 monthly billing periods | ICC order of December 19, 2024 (refiled plan) and January 16, 2025, Docket Nos. 22-0486/23-0055/24-0181 and 24-0378 |
| Delivery Service Charges, Informational Sheet No. 64.1 (2026), with Informational Sheets No. 9, 18, 20, 56, 62 and 65 | Distribution facilities charge, distribution facilities charge | 2026 monthly billing periods | ICC order of December 19, 2024 (refiled plan) and January 16, 2025, Docket Nos. 22-0486/23-0055/24-0181 and 24-0378 |
| Delivery Service Charges, Informational Sheet No. 64.1 (2026), with Informational Sheets No. 18 and 20 | Illinois electricity distribution charge, illinois electricity distribution charge | 2026 monthly billing periods | ICC order of December 19, 2024 (refiled plan) and January 16, 2025, Docket Nos. 22-0486/23-0055/24-0181 and 24-0378 |
| Purchased Electricity Charges, Informational Sheets No. 1 (85th and 86th Revised) | Electricity supply charge | June to October 2026 monthly billing periods | Informational filing with the ICC (Ill. C. C. No. 10) |
| PJM Services Charges, Informational Sheets No. 2 (76th and 77th Revised) | Transmission services charge | June to October 2026 monthly billing periods | Informational filing with the ICC (Ill. C. C. No. 10) |
| Purchased Electricity Adjustment Factor, Informational Sheets No. 3 (212th to 214th Revised) | Purchased electricity adjustment | Each monthly billing period | Informational filing with the ICC (Ill. C. C. No. 10) |
| Environmental Cost Recovery Adjustment, Informational Sheet No. 8 (54th Revised) | Environmental cost recovery adjustment | April to July 2026: 0.009¢; August to December 2026: 0.007¢ | Informational filing with the ICC (Ill. C. C. No. 10) |
| Renewable Energy Adjustments, Informational Sheet No. 36 (12th Revised) | Renewable portfolio standard | June 2026 to May 2027 monthly billing periods | Informational filing with the ICC (Ill. C. C. No. 10) |
| Zero Emission Adjustments, Informational Sheet No. 37 (20th Revised) | Zero emission standard | June 2026 to May 2027 monthly billing periods | Informational filing with the ICC (Ill. C. C. No. 10) |
| Carbon-Free Resource Adjustments, Informational Sheet No. 36.1 (49th Revised) | Carbon-free energy resource adjustment | Each monthly billing period | Informational filing with the ICC (Ill. C. C. No. 10) |
| Energy Efficiency Adjustments, Informational Sheet No. 38 (10th Revised) | Energy efficiency programs | 2026 monthly billing periods | Informational filing with the ICC (Ill. C. C. No. 10) |
| Energy Transition Assistance Charge, Informational Sheet No. 39 (8th Revised) | Energy transition assistance charge | 2026 monthly billing periods | Informational filing with the ICC (Ill. C. C. No. 10) |
| Coal to Solar Adjustment, Informational Sheet No. 63 (10th Revised) | Coal to solar adjustment | May to September 2026: 0.009¢; October 2026 to March 2027: 0.008¢ | Informational filing with the ICC (Ill. C. C. No. 10) |
| Low-Income Discount Recovery, Informational Sheet No. 74 (3rd Revised) | Low-income discount recovery | April 2026 to March 2027 monthly billing periods | Informational filing with the ICC (Ill. C. C. No. 10) |
| Rider LID, Sheets No. 498 to 509, and Low-Income Discount, Informational Sheet No. 73 (3rd Revised) | Low-income discount (single family), low-income discount (multi family) | February 2026 to March 2027 monthly billing periods | Informational filing with the ICC (Ill. C. C. No. 10); Rider LID per ICC Docket No. 24-0163 |
Values read from the text of ComEd's Schedule of Rates (Ill. C. C. No. 10) with its informational sheets, from the copy that comed.com links (index of ICC filings through October 1, 2026). ComEd's website blocks automated browsers, but its file host does not. The delivery charges follow the formula in notes (3) of Informational Sheets No. 64.17 and 64.18: each 2026 charge times (IDUF + DRAF + EDAF + TPAF + RBAF), plus the DG rebate adjustment on the distribution facilities charge. The October 2026 supply values (8.413¢ plus 1.690¢ = 10.103¢) and the purchased electricity adjustments agree with the Illinois Commerce Commission's table of ComEd prices to compare. ComEd changes the purchased electricity adjustment and the carbon-free resource reconciliation each month, so the calculator has only the billing periods for which ComEd has published every value (June to October 2026). Taxes and municipal charges are not included. ComEd does not publish a typical bill with a line breakdown, so the test bills are hand calculations. ICC table of ComEd prices to compare.
In 2025, the average ComEd home that bought its power from ComEd used 606 kWh a month and paid $107.32 a month, 17.7¢ per kWh (EIA-861 data). That is less than the Illinois average of $126.59. Your bill depends on your kWh: use the calculator on this page with the kWh from your bill.
ComEd changes the purchased electricity adjustment and the carbon-free resource adjustment each month. The calculator has only the billing periods for which ComEd has published every value.
It is a monthly charge or credit. It makes the supply charges that customers pay equal to ComEd's actual cost of electricity. If you buy electricity from a retail electric supplier, you do not pay it.
The Illinois electricity excise tax and the municipal taxes depend on your city and your kWh. Your bill shows them in the Taxes and Fees section.
The most common reason is more kWh: heating and air conditioning use much electricity. The season: on Rate BES / Rate RDS, 1,000 kWh costs $181.91 in September and $179.41 in October. Charges that change each month: customer charge, standard metering service charge and distribution facilities charge. More days in the billing period also add kWh and daily charges. To see which reason applies to your bill, use the Why is my bill so high tool on this site: type your bill and an earlier bill, and it shows each reason in dollars.
Your bill can include sales tax, a city fee, a discount, a late fee or a different number of days. Type the number of days from your bill. To add tax, type the tax rate from your bill in the tax field. If your tariff has a discount program, select it in the options.
Your bill shows the kWh for the billing period. Look for the meter reading section or the usage section.
To report a power outage to ComEd, call 800-334-7661, or use the outage map on the ComEd website. If you see a downed power line, stay away from it and call the utility or 911.
utilityratecalc.com is not part of Commonwealth Edison Company or the Illinois Commerce Commission. For the official values, use your bill and the tariff of ComEd.