Electric Rates

What Makes Up Your Electric Bill

Monthly Charges

Residential Electric Utility customers pay a monthly customer charge and a monthly energy usage charge per kilowatt hour (kWh). The monthly customer charge provides a stable revenue source to cover the fixed costs of the utility, while energy charges are based upon customers’ individual energy usage.

In addition to these charges, certain classes of commercial customers also see a monthly demand charge on their bills.

2022 Rates

In 2021, the Electric Utility conducted a rate study to determine the appropriate amounts to charge through 2024 so that the cost of operating the utility is covered. All customer classes will see no increase in their electric rates in 2022 and a 1% increase in 2023 and 2024.

As of January 2022, the average residential electric customer is paying $105.74 per month on their electric bill; this is almost 9.6% lower than ComEd’s residential rates.

Below is a table outlining charges to the most common customer classes effective January 2022. Commercial customers are encouraged to utilize the averages provided to help calculate their bills, as bills can vary widely from one business to the next. Customers wanting more information specific to their business or organization are encouraged to contact Customer Connections Manager Maher Diab at (630) 420-4184.

Customer Class 2022 Rates
  Monthly Customer Charge Energy Charge (kWh) Demand Charge (kWd) Average Monthly Electric Bill

Average kWh = 844

$16.00 $0.10627 N/A $105.74
Small Commercial (GS1)
Average kWh = 1,865
$31.65 $0.10739 N/A $232

Large Commercial (GS2)
Average kWh = 2,500
Average kWd = 100

$50.00 $0.04653 $21.65 $2,331

Very Large Commercial (GS2)
Average kWh = 50,000
Average kWd = 225

$50.00 $0.04653 $21.65 $7,247

Extra Large Commercial (GS2)
Average kWh = 220,000
Average kWd = 750

$50.00 $0.04653 $21.65 $26,524

Purchased Power Adjustment 

The Purchased Power Adjustment (PPA) first appeared on utility bills in Naperville in 2016. This is a monthly adjustment on your electric bill based on actual power costs. The PPA changes monthly and is based on a six-month rolling average. During each utility rate study, the PPA baseline is adjusted to account for projected electricity costs so that the PPA is ultimately revenue neutral to the utility.

Take a look at the below graphic to learn more about what a PPA means for your monthly electric bills. 

Purchased Power Adjustment 2017