Municipal (Electrical) Aggregation

The City of Warrenville has renewed its Municipal Electrical Aggregation Program with Eligo Energy effective October 2020, at a rate of 7.515 cents per kWh with 100% renewable energy certificates. This program will be in effect from October 2020 to October 2021. Residents will receive a notice in the mail with additional information about the program and instructions to opt out if they wish to do so. Questions about the program may be directed to the City's Electric Aggregation consultant, NIMEC, at 1-800-727-3820 or by email.

No one is obligated to participate in the City of Warrenville electric governmental aggregation program. Anyone who wishes to be excluded from the program can call Eligo Energy at 1-312-668-9227 to opt out at any time with no termination fee. Those who want to enroll in the Program can do so by contacting Eligo Energy at the same number or by email.

Learn more about Renewable Energy Certificates.

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. 


Notices will be mailed to eligible residents and small businesses in mid-August 2020. Residents enrolled with an alternative supplier will not be automatically enrolled, but will receive an opt-in notice inviting them to participate. Net-metered (solar) and hourly rate accounts will not be automatically enrolled, but will receive an informative notice.

1.    If your notice reads, “Green Electric Aggregation Notice,” you do not need to take any action to be included in the City's program for supply through Eligo at the fixed rate of 7.515¢. However, you have the choice to opt out. If you do nothing, you will be enrolled with Eligo at your October meter reading.

2.    If your notice reads, “Informational Only: Hourly” or “Informational only: Net Metering,” your account will remain unchanged, at its current status.

3.    If your notice reads “Electric Aggregation Opt In Notice” your account will remain with your currently-contracted alternative supplier, and will not be moved to Eligo unless you take action to enroll.

Program Benefits

  • Fixed rate of 7.515¢ per kWh for the one-year term ending October 2021 
  • No hidden fees, no termination fee, flexibility to join or leave the program
  • The City will earn designation as an EPA Green Power Community
  • Residents’ power consumption is offset by 100% Green Energy via Renewable Energy Certificates
  • The City’s Carbon footprint will continue to be reduced


Many Illinois communities began buying their electric power from suppliers other than ComEd. With a different supplier, nothing changes in the infrastructure; ComEd continues to do the billing and continues to repair any outages. In March 2012, a referendum passed that allowed the City to solicit bids on behalf of residents and small businesses to buy electric power on the open energy market. The goal was to secure lower electric supply rates for residents and small businesses in the community, preserve flexibility in choice, offer a rate guarantee, and utilize 100% renewable energy.

Since the State of Illinois deregulated electric power providers, 75% of commercial businesses now buy their power from suppliers other than ComEd. But few residents have moved to lower-cost energy suppliers. As a result, the State created legislation allowing communities to leverage residential accounts by engaging in a process called "Municipal Aggregation." It enables municipalities to solicit competitive bids from suppliers on behalf of the entire community. This is similar to the way a community sets rates for garbage collection.

Reference Documents

Ordinance 2684 Providing for the Referendum (PDF)

Certified Election Results (PDF)

Ordinance 2721 Adopting a Plan of Operation and Governance (PDF)