City of Elmhurst Electric Aggregation Program

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 has continued to monitor the power supply market and recently was able to contract a program with MC Squared Energy Services, LLC (mc2) whereby residents and small businesses will pay exactly the ComEd rate and 100% Wind Green-e certified Renewable Energy Certificates (RECs) will be purchased for the City.  This program will position the City to be designated as an EPA Green Power Partner Community at zero increased cost to the residents!  The program is for a 24-month term starting with meter read dates in May 2019 and ending at meter read dates in May 2021.

Background: 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, mc2, and pay the exact same ComEd rate every month.  mc2 will purchase RECs for the City based on the historical usage for accounts on mc2 supply and ComEd supply.

As such, some ratepayers will receive notice that their account will remain with ComEd supply service. There is no need to opt out because their account will not be switched.

Other ratepayers will receive notice their service is being switched to mc2.  A few weeks later, they will receive a letter from ComEd titled “Electric Supplier Choice Confirmation,” indicating the switch to mc2 supply service. Those ratepayers may choose to opt out by calling mc2 at 888-266-0146 or returning the enclosed pre-paid postage card.

Residents in the Elmhurst Green Electricity Aggregation Program, whether receiving service from ComEd or from mc2 will pay the same rate. Notices of the program will be mail dropped in May. There is never an enrollment fee, an early termination fee, nor any added monthly fees.

The program is anticipated to reduce carbon emissions by more than 100,000 tons annually. RECs purchased for the City’s energy consumption will be sourced from wind power generators located in the Midwest and are Green-e certified.

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

Frequently Asked Questions (FAQs)

Press Release 3/7/2109 - City of Elmhurst Green Electricity Aggregation Program

Official Documents

Plan of Operations and Governance

Sample ComEd Switch Letter

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 

History of Aggregation Programs

Electric Aggregation Program Update September 2017

Electric Aggregation Program Update May 2017

Electric Aggregation Program May 2014 

Aggregration Update October 2014 - Summary