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 ELIGO ENERGY IL, LLC whereby residents and small businesses will pay exactly the ComEd rate and 25% 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 2021 and ending at meter read dates in May 2023.

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, ELIGO ENERGY, and pay the exact same ComEd rate every month.  ELIGO ENERGY will purchase RECs for the City based on the historical usage for accounts on ELIGO ENERGY 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 ELIGIO ENERGY.  A few weeks later, they will receive a letter from ComEd titled “Electric Supplier Choice Confirmation,” indicating the switch to ELIGO ENERGY supply service. Those ratepayers may choose to opt out by calling ELIGIO ENERGY at 630-352-3470 or returning the enclosed pre-paid postage card.

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

Notices will be mailed to residents and small businesses on March 12, 2021. Ratepayers will receive one of several different notices as detailed below. Some accounts will move from previous program supplier MC Squared back to ComEd; others switch to Eligo. The net effect is identical for all: ComEd rate and 25% Green Energy. 


Green Aggregation Notice: You need do nothing and you will be switched to Eligo. You will never pay more than ComEd rate. You have the choice not to support the program, and to opt out by returning the postage pre-paid card or following directions to opt out.

Informative Only Notice: your account will remain unchanged, at current status.

“Opt-In Notice,” you will not be automatically switched, but will remain with your current private supplier contract. However, you are invited to join the City program. 

“Return to ComEd Service” your account will be moved from mc2 to ComEd supply service. ComEd will send a notice in  confirming your move from mc2 to ComEd.


Residents, whether with Eligo or moved to ComEd supply, will be considered members of the Elmhurst Green Aggregation program, with energy usage offset by Green Energy.


Why are some accounts at ComEd and some at Eligo Energy?

Suppliers analyze every meter; depending on complex usage patterns, certain accounts are selected to remain at ComEd and others switch to Eligo. 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 Eligo. Additionally, the City will receive an annual civic contribution to support local sustainability initiatives  at zero added cost to residents and the City.


For more information, visit or call Eligo at 630-352-3470 Monday through Friday, 8am to 6pm.


Program Benefits:

Guaranteed at the ComEd rate, with no rate risk of paying more than ComEd 

No hidden fees, no termination fee, flexibility to join or leave the program 

The City retains its certification as an EPA Green Power Community, at zero added cost

Resident’s and small businesses power consumption is offset by 25% Green Energy generated from renewable generation sources located in the Midwest, for zero cost. This includes residents enrolled with Eligo, and also those residents that were with mc2 and have been switched back to ComEd.

The City’s Carbon footprint will be reduced

Eligo will provide an annual civic contribution of $161,839 to support local sustainability initiatives at no added cost to residents or the city. 


No one from Eligo, ComEd, or the City will ever visit your home or call you to enroll. If a solicitor claims to be the City supplier, Eligo, 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. Questions: Email or leave your name and callback number at 800-727-3820 and someone will reach out to you shortly.


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)

Electric Aggregation Program Update March 2021

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

Press Release 3/7/2019 - City of Elmhurst Green Electricity Aggregation Program

Electric Aggregation Program Update September 2017

Electric Aggregation Program Update May 2017

Electric Aggregation Program May 2014 

Aggregration Update October 2014 - Summary