About charge management

Each of these scenarios represents 5 electric vehicles being charged with the same amount of energy. See how charging with different equipment and at different times can impact your cost. Use the calculator above to experiment with different configurations and see how costs are impacted.

Sample ideal staggered charging plan using around 12 kW during OFF PEAK hours (around $50/month***)

This sample charging scenario demonstrates how charging can be staggered, rather than done simultaneously. This minimizes the demand fees that are incurred based on your total kW load. This can be accomplished with charge management software or by setting a charge schedule with your vehicle's onboard software (may not be available in some models).

Sample simultaneous charging scenario using around 60 kW during OFF PEAK hours (around $50/month***)

This sample charging scenario demonstrates how charging vehicles simultaneously can result in significant kW draw, which may result in unnecessarily high bills if done during ON PEAK hours. It is best to stagger your charging and to charge at night unless it is absolutely necessary to charge during the day.

Sample simultaneous charging scenario using around 60 kW during ON PEAK hours (around $700/month***)

This sample charging scenario demonstrates how charging vehicles simultaneously during ON PEAK hours can result in significant kW draw, which may result in unnecessarily high bills. It is best to stagger your charging unless it is absolutely necessary to charge simultaneously.

Sample charging scenario, using 150 kW DC fast charger (around $1100/month***)

This sample charging scenario demonstrates how a single DC fast charger (DCFC) can result in significant kW draw, which may result in unnecessarily high bills. In most cases, it is best to find a way to charge your fleet with level 2 240V charging equipment during OFF PEAK hours rather than charging rapidly with high-power DCFC equipment during ON PEAK hours. A single high-powered DCFC can have a significant impact on your charging costs.




*Disclaimer: This tool is only intended to provide an estimate of potential savings. Actual results will vary. Customers may not realize similar energy savings or carbon emission reductions. Vehicle data is subject to change without notice. These are estimated electricity rates for the utility. Rates change periodically. Utility does not warrant or represent that this data is accurate. In no event shall the utility or its suppliers be liable for any special, indirect or consequential damages or any damages whatsoever, including, but not limited to claims associated with the accuracy of this data or information.


**Available Supply Rates ComEd offers two supply options: ComEd’s Fixed-Price rate (Rate BES)† and ComEd's Hourly Pricing rate (Rate BESH). Customers may also choose a Retail Electric Supplier (RES) for their electricity supply under Rate Retail Delivery Services (Rate RDS). In addition, customers interested in renewable energy may consider community or private renewable generation. Additional information on rate options can be found in Rates & Tariffs.

†Available to Small Commercial customers under 100kW in size

Available Delivery Rates ComEd offers two delivery service rate options to Commercial EV customers. These charges finance the maintenance of the poles, wires, and other facilities needed to deliver your electricity.

The first option available to C&I customers is the traditional kW-based rate based on their size. ComEd’s C&I customers are typically assigned to a delivery service class based upon their highest average 30-minute demand for electricity (measured in kW). Delivery service charges on a customer’s monthly bill include a Customer Charge, Standard Metering Charge and a kW-based Distribution Facilities Charge based on their highest usage during a normal business day (measured in kW). This option may benefit customers that avoid charging their EVs during the normal business day.

C&I customers with a separate EV Charging meter may elect to take delivery service under the Watthour Delivery Class for EV Charging. C&I customers who elect to take service on this rate will see a delivery service charge on their monthly bill including a Customer Charge, Standard Metering Charge, and a kWh-based Distribution Facilities Charge based on their total usage for the month (measured in kWh). This option may benefit customers that charge their EVs anytime day or night. Additional information on rate options can be found in Rates & Tariffs.


***Sample uses estimated rates under Medium Service 100-400kW Plan. These examples represent a light duty vehicle driving around 40 miles per day. Actual rates and charges will vary.