Oak Park Electric Aggregation

Oak Park’s municipal electric aggregation buys electricity from MC Squared Energy Services at a price that matches ComEd’s price to compare each month, through December 31, 2028.

Utility match
Aggregation rate
ComEd price to compare + PEA
10.103¢
ComEd price to compare
Through May 31, 2027
MC Squared Energy Services
Supplier
118 Illinois programs
Dec 2028
Contract ends
December 31, 2028

How Oak Park’s Rate Compares With ComEd

The Illinois Commerce Commission lists Oak Park’s rate as “ComEd Match PTC + PEA.” MC Squared Energy Services charges ComEd’s price to compare plus the Purchased Electricity Adjustment (PEA), so the supply price moves with ComEd’s default rate instead of staying fixed. ComEd’s price to compare is 10.103¢ per kWh from Oct 1, 2026 through May 31, 2027.

These are supply prices only. ComEd still delivers the power and bills its delivery charges either way.

About Oak Park’s Program

MC Squared Energy Services supplies 118 of the 418 active Illinois aggregation programs, at a median fixed rate of 9.99¢.

Facts about Oak Park’s aggregation program
CommunityVillage of Oak Park, Cook County
Households23,387 occupied homes (Census 2020-2024 ACS 5-year)
SupplierMC Squared Energy Services
Delivery utilityComEd
Contract endsDecember 31, 2028
EnrollmentOpt-out: residents are enrolled unless they return the opt-out notice
ReferendumApril 2011
ICC list entry“Oak Park | MC Squared Energy Services | ComEd Match PTC + PEA | December 31, 2028”

How to Opt Out or Leave

Illinois rules are the same in every aggregation community. In the Illinois Commerce Commission’s words:

  • Opting out. “The chosen supplier will send opt-out notices to all residents and eligible small businesses within the municipality or county. You will need to fill out and return the opt-out notice in order to be excluded from the aggregation program.”
  • Leaving later. “Suppliers are prohibited from applying early termination fees or penalties to residential and small commercial retail customers who terminate their contracts and switch to a different supplier or go back to the utility's service.”
  • If you already buy from a supplier. “If you are enrolled with a supplier or the utility's residential real-time program at the time the opt-out notices are being sent out, you will likely not be included in your municipality's or county's aggregation program.”

Source: Municipal Aggregation, Plug In Illinois (Illinois Commerce Commission). More on how Illinois aggregation works on the Illinois aggregation page.

Other Aggregation Programs in Cook County

19 other Cook County communities have an active aggregation program, cheapest first.

Other Aggregation Programs in Cook County
CommunitySupplierRatevs. defaultEnds
Bedford Park MC Squared Energy Services Utility match — Oct 2027
Calumet City MC Squared Energy Services Utility match — Oct 2027
Countryside MC Squared Energy Services Utility match — Jun 2027
Evanston MC Squared Energy Services Utility match — Jun 2029
Franklin Park MC Squared Energy Services Utility match — Oct 2027
Glencoe MC Squared Energy Services Utility match — Oct 2027
Hazel Crest MC Squared Energy Services Utility match — May 2030
Indian Head Park MC Squared Energy Services Utility match — Nov 2027
La Grange MC Squared Energy Services Utility match — Nov 2026
La Grange Park MC Squared Energy Services Utility match — Nov 2027
Norridge MC Squared Energy Services Utility match — Dec 2026
Northbrook MC Squared Energy Services Utility match — Oct 2027
Park Forest MC Squared Energy Services Utility match — Apr 2027
River Forest MC Squared Energy Services Utility match — Sep 2028
Rolling Meadows MC Squared Energy Services Utility match — May 2027
Schiller Park MC Squared Energy Services Utility match — Sep 2032
Skokie MC Squared Energy Services Utility match — Oct 2027
South Barrington MC Squared Energy Services Utility match — May 2027
Wilmette MC Squared Energy Services Utility match — Sep 2031
Rates
Oak Park Electricity Rates and Suppliers Plans from suppliers serving Oak Park, outside the aggregation program →
418
Every Active Illinois Aggregation Program Suppliers, rates and contract dates, compared with ComEd and Ameren →

Frequently Asked Questions

Who supplies electricity in Oak Park’s aggregation program?

MC Squared Energy Services, under a contract that runs through December 31, 2028, according to the Illinois Commerce Commission’s municipal aggregation list (checked November 2, 2026). ComEd still delivers the power.

What is Oak Park’s electric aggregation rate?

The ICC lists it as “ComEd Match PTC + PEA”: MC Squared Energy Services charges ComEd’s price to compare plus the Purchased Electricity Adjustment, so the price moves with ComEd’s default rate instead of being fixed. ComEd’s price to compare is 10.103¢ from Oct 1, 2026 through May 31, 2027.

How do I opt out of Oak Park’s electric aggregation?

Return the opt-out notice. The Illinois Commerce Commission says: “The chosen supplier will send opt-out notices to all residents and eligible small businesses within the municipality or county. You will need to fill out and return the opt-out notice in order to be excluded from the aggregation program.”

Is there a fee to leave Oak Park’s aggregation program?

No. The Illinois Commerce Commission says: “Suppliers are prohibited from applying early termination fees or penalties to residential and small commercial retail customers who terminate their contracts and switch to a different supplier or go back to the utility's service.”

When did Oak Park approve electric aggregation?

The ICC list gives Oak Park’s aggregation referendum date as April 2011. In Illinois, an opt-out program needs voters to approve it in a referendum.

Sources