HomeWattCost

Commonwealth Edison rates

ComEd has one residential plan modelled here. A typical Illinois home using 700 kWh a month pays about $133 a month.

Investor-owned 3,727,675 residential customers (EIA-861, 2024) Tariffs checked September 28, 2026

Typical all-in priceRate BES + Rate RDS (Residential Single Family Without Electric Space Heat)

01234567890123456789.0123456789¢/kWh
Rate BES + Rate RDS (Residential Single Family Without Electric Space Heat)$133/mo

Residential plans

PlanTypeFixed/moJuly pricesJanuary pricesJuly weekday windows
Rate BES + Rate RDS (Residential Single Family Without Electric Space Heat)
Basic Electric Service, single family (no electric space heat)		 Flat $20.75 16.2¢ all hours 16.0¢ all hours None

Charging an EV on ComEd

1,000 miles a month in a Tesla Model Y Long Range AWD (275 kWh from the wall, EPA 27.5 kWh/100 mi) at 7.2 kW, added to a typical Illinois home’s use, on each plan’s cheapest start hour versus plugging in at 6 pm. Averaged over the year.

PlanBest startCharging, best startCharging from 6 pmWhole bill with EV
Rate BES + Rate RDS (Residential Single Family Without Electric Space Heat)Any$44/mo$44/mo$177/mo

With an EV charged at its best hour, the cheapest plan overall is Rate BES + Rate RDS (Residential Single Family Without Electric Space Heat). Compare plans on your own usage.

How ComEd’s plans work

Rate BES + Rate RDS (Residential Single Family Without Electric Space Heat) (Basic Electric Service, single family (no electric space heat)). One price per kWh at every hour: 16.2¢ in July and 16.0¢ in January. Shifting use to other hours changes nothing on this plan; using less is the only lever. Fixed charge: $20.75 a month.

Prices on this page are all-in per kWh, before taxes: base rates, supply and every per-kWh rider in the utility’s current tariff sheets. Your bill shows them as separate lines, and riders can change between tariff revisions.

As a cross-check, ComEd billed its residential customers an average of 15.22¢ per kWh in 2024 (revenue ÷ sales, EIA-861). A plan taken from URDB is shown only if its all-in price is consistent with that figure, adjusted for Illinois’s price change since.

Sources for each plan

PlanEffectiveSeasonsSolar exportsSource and status
Rate BES + Rate RDS (Residential Single Family Without Electric Space Heat)
Transcribed from the utility’s tariff		 September 19, 2026 Summer pricing Jun–Sep; winter Oct–May Not recorded in URDB Checked September 28, 2026
ComEd Schedule of Rates Ill. C.C. No. 10 (2026 Ratebook, updated Sept 21, 2026): Informational Sheets 1-3, 8, 9, 18, 20, 36-39, 41, 56, 62-65, 74; Rider RCA Sheets 256-257 · ComEd Summary of Typical Residential Line Item Charges (Jan 2026) with sample bill · ComEd Guide to the Retail Customer's Billed Delivery Service Charges (2026) · Plug In Illinois: ComEd price to compare

Plans marked “Checked” were transcribed from the utility’s current tariff and rider sheets, all charges included, and are re-checked on the date shown in each file. Other plans come from the OpenEI U.S. Utility Rate Database (CC BY 4.0) and have not yet been checked line by line against the utility’s tariff. Always confirm the current rates on your utility’s website before switching plans.

Run the numbers on ComEd

EV charging cost Which plan is cheaper Best time to run things Appliance cost Solar payback Heat pump vs gas