Service Request Explore Elmhurst

Electric Aggregation Program

On August 14, 2023, letters were mailed to Elmhurst households on the City’s new aggregation program.  Each household received a letter tailored to their household; therefore, neighbors may have received different letters. 

Below are links to sample letters with a brief description of each:

  • Aggregation Solar – Your household currently receives electricity through solar or other source.  This letter is informational only and no action is required.
  • Aggregation Hourly – Your household currently participates in an hourly program with ComEd.  This letter is informational only and you will remain with your current program.
  • Aggregation Own Supplier – Your household has independently selected your own electricity provider.  This letter is informational only. 
  • Aggregation Remain ComEd – Your household will remain with ComEd as your supplier.  No action is required unless you would like to opt-in to the program.
  • Aggregation MC Squared – Your household will be moved to a new supplier.  You will still receive your bill from ComEd, but it will indicate MC Squared as your provider.  You will pay the same rate as ComEd.  Action is only required if you would like to opt out of the program. 

For more information on the aggregation program and frequently asked questions, please continue to read below. 

Following the passage of a March 2012 voter Referendum, the City of Elmhurst contracted to procure electric supply in a municipal electric aggregation program for residents and small businesses.

The City’s contract with Eligo Energy has ended.  In June 2023, the City approved a new contract with MC Squared LLC whereby residents and small businesses will pay exactly the ComEd rate and 5% Renewable Energy Certificates (RECs) will be purchased for the City.    The program is for a 12-month term starting with meter read dates in October 2023 and ending at meter read dates in October 2024.

The cost of serving each electric account varies greatly, depending on usage patterns. Some ratepayer accounts will be served by ComEd supply service and others will be switched to the new supplier, MC Squared, and pay the exact same ComEd rate every month.  At times during the contract you may be switched between ComEd and MC Squared. You will still pay the same rate.

Residents in the Elmhurst Green Electricity Aggregation Program, whether receiving service from ComEd or from MC Squared will pay the same rate. 

Why are some accounts at ComEd and some at MC Squared?

Suppliers analyze every meter; depending on complex usage patterns, certain accounts are selected to remain at ComEd and others switch to MC Squared. The net effect is same for all: all pay the ComEd rate; for zero added costs, and Green Power is procured for both those served by ComEd supply, and those enrolled with MC Squared.

For more information, email or call  (833) 206-3583 Monday through Friday, 8:00 a.m. to 5:00 p.m.

No one from MC Squared, ComEd, or the City will ever visit your home or call you to enroll. If a solicitor claims to be the City supplier, MC Squared, or ComEd, take their information and report the incident to the ICC at Never reveal your ComEd account number or allow a solicitor to view your ComEd bill unless you are certain you wish to enroll with that supplier and have read all terms and conditions.

This program enables the City to receive the designation of an EPA Green Power Partner Community. The U.S. Environmental Protection Agency lists the following benefits of attaining designation as a Green Power Partner Community:

  • Improved living and community environment
  • Reduced greenhouse gas emissions and other pollutants
  • Demonstrated civic leadership
  • Enhanced community image and increased citizen pride

Additional Information
Information on electric choice from the Illinois Commerce Commission is available at

Information on energy efficiency and conservation is available from the U.S. Department of Energy's Energy Savers page and ComEd at: and 

Is this a scam?

No, the City is continuing its Green Aggregation program with Chicago-based supplier MC Squared at exactly the ComEd rate. There is no added cost to residents or the City.

What do I need to do?
You need do nothing; however, you may choose to opt out. Read your letter carefully as different letters are sent to different ratepayers:

  1. “Opt-Out Notice,” you will be enrolled into the aggregation program however may opt-out and remain with ComEd.
  2. “Opt-In Notice,” you will remain with your current supplier in a private contract, but you may take action to enroll.
I thought electric aggregation was a savings program. Will I save money?
No, but you will never pay more than the ComEd rate.
Why should I participate if the rate is the same as the ComEd rate; what's the benefit to me?

The City sought a program wherein residents would never pay a fixed rate above ComEd. The City will receive Green Renewable Energy, retaining its status as an EPA Green Power Community. You are not obligated to participate and may seek any alternative supplier—you are advised to read all contract terms carefully.

Why did I get a different letter than my neighbor received; some stay at ComEd and some move to MC Squared??
First, there is no difference to you: the price is the same for all. Suppliers analyze every meter; depending on historical usage patterns at peak demand periods, some accounts remain at ComEd and others move to MC Squared. The City retires RECs to match 5% of your power consumption. It is your option for your account to be served wherever you wish; customer choice is the focus for all residents in Illinois!

Someone called my home to sign me up.

Beware! No one from ComEd, MC Squared, or the City will ever call or visit you to sign you up. Never reveal your ComEd account information to solicitors who say they represent the City, ComEd, or MC Squared.
Will this cost more money?
No, there are no fees to you or the City. The rate will always remain the ComEd rate.
More Questions?
Email or call 833-206-3583, Monday through Friday, 8 a.m. to 5 p.m.

For more detail about aggregation, suppliers, and the ComEd rate, visit, a website established by the Illinois Commerce Commission for consumers to learn about power rates in Illinois.