Is Commonwealth Edison (ComEd) cheaper than City of Naperville?

No — in 2024 Commonwealth Edison (ComEd) customers averaged 15.22 cents/kWh versus 12.98 for City of Naperville (EIA-861). City of Naperville was cheaper by 2.24 cents, about $242 per year at 10,800 kWh.

Can I switch from Commonwealth Edison (ComEd) to City of Naperville?

No — distribution territories are exclusive and set by address; you cannot pick between the two wires companies. Illinois does allow supply choice: either utility's customers can shop the supply portion at pluginillinois.org if an offer beats the utility's price to compare.

Why is Commonwealth Edison (ComEd) more expensive than City of Naperville?

EIA-861 averages reflect everything customers actually paid — supply costs, delivery rates, riders, and surcharges across each territory. Differences in generation mix, grid investment, storm costs, and customer density between ComEd and City of Naperville territory all feed the 2.24-cent gap.

Commonwealth Edison (ComEd) vs City of Naperville: Which Is Cheaper? (Illinois, 2024)

City of Naperville customers paid less: an average 12.98¢/kWh in 2024 versus 15.22¢/kWh at Commonwealth Edison (ComEd) (EIA-861) — a gap of 2.24¢/kWh, worth about $242 per year at typical usage (10,800 kWh/yr). Their territories meet in 2 IL counties (DuPage, Will). You cannot switch wires companies — the territory is set by your address, though in Illinois both utilities' customers can shop the supply portion of the bill.

Side by side (IL, EIA-861)

Commonwealth Edison (ComEd) vs City of Naperville — residential averages from federal EIA-861 filings
Metric	Commonwealth Edison (ComEd)	City of Naperville
2024 average price, ¢/kWh	15.22	12.98
2023 average price, ¢/kWh	14.78	12.95
Annual cost at 10,800 kWh, $/yr	$1,643	$1,402
Residential customers (2024)	2,922,223	56,117
Ownership	Investor-owned	Municipal
Counties served in IL	24	2

Average price = residential revenue ÷ sales (bundled service): the all-in price customers actually paid, including supply, delivery and riders. Profiles: Commonwealth Edison (ComEd) · City of Naperville · Illinois overview.

Where the territories meet

Both utilities file EIA-861 service territory in: DuPage · Will counties (IL, 2024).

Adjoining or overlapping territory in a county does not mean households there can pick between the two — service maps are parcel-level and fixed. The county overlap mainly matters when choosing where to live or comparing town-level costs.

Can you actually choose between them?

No — not for delivery. Distribution territories are exclusive and set by address; Commonwealth Edison (ComEd) and City of Naperville do not compete for the same meters. Illinois does have retail supply choice: customers of either utility may buy the supply portion from a licensed third-party supplier, or stay on the utility's default supply rate. An offer only saves money if it beats your utility's price to compare (printed on the bill); compare offers at pluginillinois.org. The price gap above mainly matters when choosing where to live, comparing towns, or benchmarking your bill.

Questions people ask

Is Commonwealth Edison (ComEd) cheaper than City of Naperville?: No — in 2024 Commonwealth Edison (ComEd) customers averaged 15.22 cents/kWh versus 12.98 for City of Naperville (EIA-861). City of Naperville was cheaper by 2.24 cents, about $242 per year at 10,800 kWh.
Can I switch from Commonwealth Edison (ComEd) to City of Naperville?: No — distribution territories are exclusive and set by address; you cannot pick between the two wires companies. Illinois does allow supply choice: either utility's customers can shop the supply portion at pluginillinois.org if an offer beats the utility's price to compare.
Why is Commonwealth Edison (ComEd) more expensive than City of Naperville?: EIA-861 averages reflect everything customers actually paid — supply costs, delivery rates, riders, and surcharges across each territory. Differences in generation mix, grid investment, storm costs, and customer density between ComEd and City of Naperville territory all feed the 2.24-cent gap.

About these numbers. Rates shown are averages computed from federal regulatory filings (EIA Form 861) and public tariff databases — confirm with your utility before making decisions; your actual rate depends on your tariff, usage, and riders. Distribution utility is determined by address and generally cannot be chosen; in retail-choice states you may choose your supplier for the supply portion of the bill. Savings figures use 10,800 kWh/yr (US average residential usage) and are estimates, not quotes. EnergySavings is an independent data project by CertiHomes and is not affiliated with any utility, supplier, or government agency.