Ameren Illinois' current price to compare is 10.441¢ per kWh for homes. That's the price you pay for electricity supply if you haven't chosen a supplier, and it's the number any supplier offer has to beat.
I keep this page current from the official published figures, so you can check it before you shop.
Ameren Illinois Price to Compare Right Now
| Customer type | Price per kWh | In effect |
|---|---|---|
| Residential, first 800 kWh | 10.441¢ | Oct 1, 2026 to May 31, 2027 |
Source: Plug In Illinois (Illinois Commerce Commission), Ameren Illinois Price to Compare, supply plus transmission (checked October 2, 2026). Supply plus transmission, in cents per kWh. Next change: June 1, 2027, when the summer price starts. Always check the price printed on your latest bill; your rate class is listed there.
What This Means for Your Business
- It changes on Ameren Illinois's schedule, not yours. A fixed price from a licensed supplier locks the number for the term you choose.
- What it's worth: Every 1¢ per kWh a supplier can beat the default price by is worth about $50 a month, or $600 a year, for a business using 5,000 kWh a month.
- It's a benchmark, not a quote. Licensed suppliers price your actual account. Whether an offer beats it depends on your usage, start date, and term.
- Capacity matters for bigger accounts. Ameren Illinois is in MISO, where capacity costs are part of what you pay. Check how any contract handles them.
- Usage above 800 kWh a month is priced at 8.262¢ per kWh.
- Business accounts have different prices; check your latest bill.
How to Compare an Offer to Ameren Illinois
- Find your rate class and price on your Ameren Illinois bill (or use the table above).
- Compare the price per kWh for supply only.
- Check the term, the end date, and what happens when the contract ends.
- Check for a cancellation fee and any monthly fee.
- More on shopping, contracts, and your rights in our Illinois guide.
Let Us Beat Ameren Illinois's Price for You
Send a photo of your Ameren Illinois bill. We get licensed suppliers to quote your actual account, read the fine print for you, and watch your end date so a quiet rollover never costs you. It's free to you: the supplier you choose pays us. If nothing beats what you pay now, we'll tell you.
Or skip the form: send us a photo of your bill.
FAQ
What is Ameren Illinois's price to compare right now?
Residential, first 800 kWh: 10.441 cents per kWh (Oct 1, 2026 to May 31, 2027). Source: Plug In Illinois (Illinois Commerce Commission), Ameren Illinois Price to Compare, supply plus transmission.
When does it change next?
June 1, 2027, when the summer price starts.
Does switching suppliers change who delivers my power?
No. Ameren Illinois still delivers your electricity and handles outages. Only the supply price changes.
Is this the lowest price available?
Not necessarily. It's the benchmark. Licensed suppliers may offer a lower fixed price for your account, depending on your usage, start date, and term.