Yorkville Electric Aggregation
Yorkville’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, 2027.
How Yorkville’s Rate Compares With ComEd
The Illinois Commerce Commission lists Yorkville’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 Yorkville’s Program
MC Squared Energy Services supplies 118 of the 418 active Illinois aggregation programs, at a median fixed rate of 9.99¢.
| Community | City of Yorkville, Kendall County |
| Households | 8,140 occupied homes (Census 2020-2024 ACS 5-year) |
| Supplier | MC Squared Energy Services |
| Delivery utility | ComEd |
| Contract ends | December 31, 2027 |
| Enrollment | Opt-out: residents are enrolled unless they return the opt-out notice |
| Referendum | March 2012 |
| ICC list entry | “Yorkville | MC Squared Energy Services | ComEd Match PTC+PEA | December 31, 2027” |
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 Kendall County
1 other Kendall County community has an active aggregation program, cheapest first.
| Community | Supplier | Rate | vs. default | Ends |
|---|---|---|---|---|
| Kendall County | MC Squared Energy Services | Utility match | — | Dec 2027 |
Frequently Asked Questions
Who supplies electricity in Yorkville’s aggregation program?
MC Squared Energy Services, under a contract that runs through December 31, 2027, according to the Illinois Commerce Commission’s municipal aggregation list (checked November 2, 2026). ComEd still delivers the power.
What is Yorkville’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 Yorkville’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 Yorkville’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 Yorkville approve electric aggregation?
The ICC list gives Yorkville’s aggregation referendum date as March 2012. In Illinois, an opt-out program needs voters to approve it in a referendum.
Sources
- Municipal Aggregation List, Plug In Illinois (Illinois Commerce Commission), checked November 2, 2026: supplier, rate, contract end and referendum date.
- Price to Compare - ComEd | Plug In Illinois (Illinois Commerce Commission): the current price to compare, effective October 1, 2026.
- Municipal Aggregation, Plug In Illinois (Illinois Commerce Commission): opt-out and early-exit rules.
- U.S. Census Bureau, American Community Survey 2020-2024 ACS 5-year estimates, table B25002: occupied homes.
