City of Elmhurst Electric Aggregation Program

Electricity Aggregation Program - October, 2016 Update

While the aggregation program has been extremely successful during the first two years (average resident savings have been in excess of $335), the recently approved ComEd rates are lower than the City’s aggregation’s pricing of 7.51 cents/kWh.
View Elmhurst vs ComEd Rate and Savings History

The ComEd rate is re-set twice a year. The summer rate is effective June through September and the non-summer rate is for the months of October through May. The recently approved ComEd summer rate is 6.19 cents/kWh (effective June, 2016 through September, 2016) and the non-summer rate is 6.308 cents/kWh (effective October, 2016 through May, 2017). The rates do not include the variable Purchased Electricity Adjustment (PEA) charge. The variable PEA can be a credit or a charge of a maximum 0.5 cents/kWh each month resulting in monthly price swings up to 1.0 cent/kWh. Therefore, the ComEd rate will range from 5.69¢ to 6.69¢ until September, 2016 and from 5.808¢ to 6.808¢ for the period October, 2016 through May, 2017. The PEA has averaged .065 cents/kWh charge for the last 65 months. However, for the last 12 months, the PEA has averaged .229 cents/kWh credit.
View PEA History

Unlike the ComEd rate, 50% of the City’s energy consists of energy from renewable sources. The City’s rate of 7.51¢ includes a premium to purchase this “green” energy.

Residents are free to leave the aggregation program at any time with no early termination fees. Even if residents leave the program, they can later re-join the aggregation at the same rate should they so choose. The City’s aggregation rate of 7.51¢ will be available through the summer of 2017. Should a resident leave the aggregation program and move to ComEd or any other supplier, the resident is free to return to the City’s aggregation program after a period of six months. With new switching rules in effect, you can switch as often as you like, the only restriction is you cannot return to the most recent supplier for a period of six months.

Any resident desiring to move to ComEd should contact Constellation Energy, the City’s current electric aggregation supplier, at 1-844-309-6307. Have your account number when you place the call.

Residents can find alternative priced rates from other suppliers and additional information regarding municipal aggregation at the State of Illinois’ website:

Residents with questions can call our consultant, NIMEC, at 1-800-727-3820.

In summary, the City aggregation program has no early termination fees, 50% of the City’s energy is “green” energy (from renewable sources) and the rate is 7.51 cents/kWh. The ComEd rate for the period June, 2016 through May, 2017 will range from 5.69¢ to 6.808¢. Residents are free to return to ComEd (or other suppliers) at any time. Should residents leave the City’s program, they are free to return after a period of six months (at the same rate) before summer of 2017, by calling Constellation Energy at 1-844-309-6307.

Electric Aggregation Program May 2014

Aggregration Update October 2014 - Summary

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