City utility customer
If your bill is from the City of Naperville, compare the city's 2026 residential rate and monthly customer charge.
See Naperville rates →Naperville Electricity Rates
Compare 2026 electricity rates in Naperville, including the City of Naperville Electric Utility and competitive electricity plans available to eligible addresses served by ComEd.
City of Naperville Electric Utility
2026 rates
ComEd comparison
Supplier eligibility varies
Compare Naperville Electricity Rates →
Check your electricity service
Enter your ZIP code to determine whether your address is served by the City of Naperville Electric Utility or another utility such as ComEd.
ZIP codes can contain multiple utility service areas. Always verify the utility shown on your electric bill before enrolling with any competitive supplier.
11.968¢
Naperville 2026 residential energy rate
$21.52
2026 monthly residential customer charge
10.399¢
ComEd summer 2026 Price to Compare*
ZIP
Verify your electric utility first
Naperville is different from most Illinois electricity markets
The City of Naperville owns and operates its municipal electric utility. Customers served by the city generally do not choose an alternative retail electricity supplier. Some addresses in the broader Naperville area are served by ComEd, where competitive supplier options may be available.
Quick recommendations
Which Naperville electricity option is right for you?
The first step is identifying the utility that serves your address. After that, compare the applicable rate structure, monthly charges and electricity usage.
ComEd customer
Some greater Naperville addresses are served by ComEd and may be eligible for competitive electricity supply offers.
See supplier examples →Best for lower bills
Compare your actual monthly usage and total bill rather than looking only at a cents-per-kWh figure.
Compare total costs →Renewable energy
Customers in competitive utility territories can compare renewable supplier offers when those plans are available for their address.
Review green options →
Naperville electricity rates
Compare the City of Naperville with ComEd
The City of Naperville publishes municipal electric rates separately from ComEd. The ComEd figure below is relevant only to addresses actually served by ComEd and is included as a regional comparison.
● Rate snapshot: August 2026
| Utility / Provider | Rate / Charge | Monthly Charge | Example at 1,000 kWh | Market | Rate Type | |
|---|---|---|---|---|---|---|
|
City of Naperville Electric Utility
Municipal electric service
|
11.968¢
/kWh
|
$21.52/mo | ~$141.20* | Municipal | Flat residential | Rates |
|
ComEd
Utility supply service
|
10.399¢
/kWh
|
Varies | ~$104* | ComEd territory | Utility supply | Verify |
|
Constellation
10 Month Home Power Plan
|
11.19¢
/kWh*
|
$0 advertised* | ~$112* | ComEd eligible | Fixed | View |
|
Spark Energy
Secure Green 12
|
13.59¢
/kWh*
|
$0 advertised* | ~$136* | ComEd eligible | Fixed | View |
|
American Power & Gas
Residential 100% Green 6 Month
|
13.79¢
/kWh*
|
$0 advertised* | ~$138* | ComEd eligible | Renewable | View |
*The City of Naperville's 2026 residential rate is $21.52/month plus 11.968¢/kWh. The ~$141.20 figure is a simple illustration of the customer charge plus 1,000 kWh of energy at the published energy rate and does not include the monthly Purchased Power Adjustment, taxes or other applicable charges. ComEd's 10.399¢/kWh Price to Compare is a supply-plus-transmission comparison price and is not a complete electric bill. Competitive supplier examples apply only to eligible addresses in ComEd territory.
Naperville electricity options
Compare municipal service and ComEd supplier plans
If your address is served by the City of Naperville, the municipal utility rate applies. If your address is served by ComEd, competitive supplier plans may be available.
City of Naperville
2026 Residential Flat Rate
11.968¢
per kWh
$21.52
Monthly charge
Municipal
Utility type
PPA
Monthly adjustment
- Locally owned electric utility
- 2026 residential energy rate
- $21.52 monthly customer charge
- Purchased Power Adjustment may apply
Constellation
10 Month Home Power Plan
11.19¢
per kWh*
10 mo.
Term
Fixed
Rate type
ComEd
Utility
- Current August 2026 market example
- Fixed-rate plan
- Intended for eligible ComEd addresses
- Not a City of Naperville utility plan
Spark Energy
Secure Green 12
13.59¢
per kWh*
12 mo.
Term
Fixed
Rate type
Green
Plan
- Current supplier example
- 12-month locked-rate example
- Green electricity option
- Eligibility depends on utility and ZIP
American Power & Gas
Residential 100% Green 6 Month
13.79¢
per kWh*
6 mo.
Term
Fixed
Rate type
100%
Green
- Renewable electricity example
- Six-month locked-rate example
- Intended for eligible ComEd addresses
- Verify current ZIP eligibility
Naperville electricity guide
Check My ZIP Code
How to compare your Naperville electric bill
Unlike many Illinois communities, Naperville has its own municipal electric utility. Before comparing supplier rates, look at the utility name on your bill.
Check My ZIP Code
Step 1
Identify your electric utility
Check your electric bill to determine whether your service is from the City of Naperville Electric Utility, ComEd or another utility.
Step 2
Check your usage
Review several months of kWh usage. A 1,000-kWh comparison can be useful, but your actual usage determines your actual energy cost.
Step 3
Add fixed monthly charges
Naperville's 2026 residential customer charge is $21.52 per month. Monthly charges can materially affect the effective cost for lower-usage homes.
Step 4
Check adjustments
Naperville applies a monthly Purchased Power Adjustment. ComEd customers may also see adjustments and separate delivery charges.
Understand your bill
What determines your Naperville electric bill?
The exact calculation depends on the utility serving your address and the rate schedule applicable to your account.
Naperville energy charge
The City of Naperville's 2026 residential flat energy rate is 11.968¢ per kWh.
Monthly customer charge
Naperville's 2026 residential customer charge is $21.52 per month, regardless of how much electricity is consumed.
Purchased Power Adjustment
Naperville's PPA changes monthly and reflects actual power costs using a rolling calculation. It can change the final bill above or below the simple energy-rate calculation.
Before comparing rates
Five things to check before choosing an electricity plan
Confirm whether your address is served by Naperville's municipal utility or ComEd.
Compare the applicable cents-per-kWh rate with monthly customer charges and adjustments.
Naperville's PPA changes monthly and should be considered when estimating the final bill.
If you are in ComEd territory, review supplier contract length, fees and cancellation terms.
Naperville area
Electricity service around Naperville
Service territory does not always follow city or mailing-address boundaries. Verify the utility listed on your electric bill before comparing competitive supplier offers.
Ready to compare Naperville electricity rates?
Check your ZIP code and identify the utility serving your address before comparing plans.
Naperville electricity FAQ
Frequently asked questions
Important information about Naperville's municipal electricity service and nearby ComEd territory.
Who provides electricity in Naperville?
The City of Naperville owns and operates a
municipal Electric Utility serving customers
within its electric service territory. Some
addresses in the greater Naperville area may
instead be served by ComEd.
What is the Naperville electricity rate in 2026?
The City of Naperville's 2026 residential
flat energy rate is 11.968 cents per kWh.
The residential customer charge is $21.52
per month. A monthly Purchased Power Adjustment
can also affect the final bill.
Does Naperville have its own electric company?
Yes. The City of Naperville operates its own
municipally owned Electric Utility. It is
separate from ComEd.
Can I choose an electricity supplier in Naperville?
Customers served by the City of Naperville
Electric Utility generally do not have the
same competitive supplier-shopping options
available to customers of ComEd. If your
address is served by ComEd, competitive
supplier options may be available.
Is Naperville electricity cheaper than ComEd?
The answer depends on the complete bill and
your usage. Naperville's municipal utility
currently publishes a residential energy rate
of 11.968 cents per kWh plus a $21.52 monthly
customer charge and applicable adjustments.
ComEd's summer 2026 Price to Compare is
10.399 cents per kWh, but that figure does
not represent a complete delivered bill.
What is the Naperville Purchased Power Adjustment?
The Purchased Power Adjustment, or PPA, is
a monthly adjustment based on actual power
costs. The City describes it as using a
six-month rolling average and notes that it
changes monthly.
What is the ComEd rate near Naperville?
ComEd's summer 2026 Price to Compare is
10.399 cents per kWh from June 1 through
September 30, 2026. It combines the electric
supply and transmission comparison charges
and excludes delivery charges.
Are competitive electricity plans available in Naperville?
Competitive plans may be available to
addresses in the ComEd service territory.
They are not automatically available simply
because an address has a Naperville mailing
address. Verify the utility shown on your
electric bill first.
How do I find the cheapest electricity rate in Naperville?
First identify your utility. City of
Naperville customers should compare their
municipal rate, monthly customer charge,
usage and Purchased Power Adjustment.
ComEd customers can compare the ComEd Price
to Compare with eligible competitive supplier
offers and review the complete terms.
Naperville electricity pricing disclosure: The City of Naperville's 2026 residential electric rate is $0.11968 per kWh plus a $21.52 monthly customer charge. A Purchased Power Adjustment may change the final monthly bill. ComEd's 10.399¢/kWh summer 2026 Price to Compare applies to ComEd customers and should not be presented as the municipal Naperville utility rate. Competitive supplier offers shown on this page are examples for eligible ComEd-served addresses and may change by ZIP code, utility, usage, eligibility, promotional terms and contract. Always verify the utility and current offer terms before enrolling.