Richland County Electric Aggregation

Richland County’s municipal electric aggregation buys electricity from Constellation NewEnergy, Inc. at 12.691¢ per kWh, fixed through May 31, 2027. That’s 2.25¢ above Ameren’s current price to compare of 10.441¢.

12.691¢
Aggregation rate
per kWh, fixed
+2.25¢
vs. Ameren default
10.441¢ price to compare
Constellation NewEnergy, Inc.
Supplier
30 Illinois programs
May 2027
Contract ends
May 31, 2027

How Richland County’s Rate Compares With Ameren

Richland County’s 12.691¢ rate is 2.25¢ above Ameren’s price to compare of 10.441¢ for the first 800 kWh a month (8.262¢ above that), which applies from Oct 1, 2026 through May 31, 2027. On 1,000 kWh in a month, that’s about $26.86 more for supply.

Richland County aggregation rate compared with the Ameren Illinois price to compare
Supply pricePer kWhOn 1,000 kWh
Richland County aggregation (Constellation NewEnergy, Inc.)12.691¢$126.91
Ameren Illinois price to compare10.441¢*$100.05
Difference+2.25¢+$26.86

* Ameren’s price is 10.441¢ for the first 800 kWh a month and 8.262¢ after that; the 1,000 kWh figure uses both.

Ameren’s price to compare changes several times a year. It was 11.326¢ from June 1 to September 30, 2026, when Richland County’s rate was 1.37¢ above it. Among the 260 fixed-rate aggregation programs in Ameren Illinois territory, Richland County’s is the 169th lowest.

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

About Richland County’s Program

Constellation NewEnergy, Inc. supplies 30 of the 418 active Illinois aggregation programs, at a median fixed rate of 11.695¢.

Facts about Richland County’s aggregation program
CommunityCity of Richland County, Richland County
Households6,443 occupied homes (Census 2020-2024 ACS 5-year)
SupplierConstellation NewEnergy, Inc.
Delivery utilityAmeren Illinois
Contract endsMay 31, 2027
EnrollmentOpt-out: residents are enrolled unless they return the opt-out notice
ReferendumNovember 2012
ICC list entry“Richland County | Constellation NewEnergy, Inc. | 12.691 | May 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 Constellation NewEnergy, Inc. Programs in Ameren Illinois Territory

No other Richland County community has an active aggregation program, so here are the Constellation NewEnergy, Inc. programs closest to Richland County’s rate.

Other Constellation NewEnergy, Inc. Programs in Ameren Illinois Territory
CommunitySupplierRatevs. defaultEnds
Beecher City Constellation NewEnergy, Inc. 12.691¢ +2.25¢ May 2027
Oblong Constellation NewEnergy, Inc. 12.691¢ +2.25¢ May 2027
Robinson Constellation NewEnergy, Inc. 12.691¢ +2.25¢ May 2027
Crawford County Constellation NewEnergy, Inc. 12.691¢ +2.25¢ May 2027
Hutsonville Constellation NewEnergy, Inc. 12.691¢ +2.25¢ May 2027
Salem Constellation NewEnergy, Inc. 12.591¢ +2.15¢ May 2027
Swansea Constellation NewEnergy, Inc. 11.997¢ +1.56¢ May 2027
Greenville Constellation NewEnergy, Inc. 11.974¢ +1.53¢ Jun 2027
Vermillion County Constellation NewEnergy, Inc. 13.529¢ +3.09¢ Feb 2028
Georgetown Constellation NewEnergy, Inc. 11.795¢ +1.35¢ May 2027
418
Every Active Illinois Aggregation Program Suppliers, rates and contract dates, compared with ComEd and Ameren →

Frequently Asked Questions

Who supplies electricity in Richland County’s aggregation program?

Constellation NewEnergy, Inc., under a contract that runs through May 31, 2027, according to the Illinois Commerce Commission’s municipal aggregation list (checked November 2, 2026). Ameren Illinois still delivers the power.

What is Richland County’s electric aggregation rate?

12.691¢ per kWh, fixed until May 31, 2027. That is the supply price only; Ameren Illinois’s delivery charges are billed separately on the same bill.

Is Richland County’s aggregation rate lower than Ameren’s?

No. Richland County’s 12.691¢ rate is 2.25¢ above Ameren’s price to compare of 10.441¢ for the first 800 kWh a month (8.262¢ above that), which applies from Oct 1, 2026 through May 31, 2027. Ameren’s price was 11.326¢ from Jun 1 to Sep 30, 2026, when Richland County’s rate was 1.37¢ above it.

How do I opt out of Richland County’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 Richland County’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 Richland County approve electric aggregation?

The ICC list gives Richland County’s aggregation referendum date as November 2012. In Illinois, an opt-out program needs voters to approve it in a referendum.

Sources