Compare Illinois electricity suppliers

Illinois customers can switch electricity suppliers while ComEd or Ameren continues to deliver power. Compare offers against each utility’s Price to Compare before you enroll. We pulled every certified residential offer and ranked them. Upload your bill and I'll find your three cheapest plans, or pick your utility below.

Find your cheapest Illinois plan

Upload your most recent energy bill and I'll read your utility and usage, then rank the 3 cheapest certified plans for you from live state data.

PDF, photo, or a usage CSV works. I read it instantly and rank your options.

Electric utilities

Electric offers

Illinois electricity market snapshot

as of June 22, 2026

Our ranking: we compute each plan's all-in effective rate — the headline rate plus any monthly fee spread over a typical 900 kWh/month — so cheap teasers with fat monthly fees don't masquerade as the best deal.

Cheapest plan in state

5.85¢/kWh

MC Squared Energy Services, LLC · ComEd

Avg best plan / utility

9.49¢/kWh

across 4 utilities

Watch-out offers

3 variable · 0 teaser

Best fixed plan by utility

The lowest all-in fixed-rate plan we found for each electric utility, ranked cheapest first.

#	Utility	Best plan	All-in rate
1	ComEd	MC Squared Energy Services, LLC · 12 mo	5.85¢
2	Ameren Illinois Rate Zone I	SmartEnergy Holdings, LLC · 12 mo	10.70¢
3	Ameren Illinois Rate Zone II	SmartEnergy Holdings, LLC · 12 mo	10.70¢
4	Ameren Illinois Rate Zone III	SmartEnergy Holdings, LLC · 12 mo	10.70¢

All-in rate = headline supplier rate + monthly fee ÷ 900 kWh/month, our calculation; excludes utility delivery charges (paid regardless of supplier) and one-time enrollment quirks. Verify current terms on the supplier's site before enrolling.

Browse all electricity offers by utility

Tap your electric utility to compare every supplier offer.

Ameren Illinois Rate Zone I

15 offers

Cheapest fixed

10.70¢/kWh

Compare offers →

Ameren Illinois Rate Zone II

12 offers

Cheapest fixed

10.70¢/kWh

Compare offers →

Ameren Illinois Rate Zone III

14 offers

Cheapest fixed

10.70¢/kWh

Compare offers →

ComEd

47 offers

Cheapest fixed

5.85¢/kWh

Compare offers →

What is the cheapest electricity rate in Illinois right now?

As of June 22, 2026, the lowest all-in fixed residential plan we rank is MC Squared Energy Services, LLC (Smart Value Power Program) at 5.85¢/kWh for ComEd customers, on a 12-month term. "All-in" means we add each plan's monthly fee to the headline rate — so low teaser rates with high fees don't look artificially cheap. The best plan depends on your utility; see the leaderboard above.

Is Illinois deregulated for electricity?

Yes. Illinois allows residential customers to choose their electricity supplier while the local utility still delivers power, reads the meter, and handles outages. Only the supply (generation) portion of your bill changes when you switch suppliers.

Is a fixed or variable rate better?

A fixed rate locks your supply price for the contract term. A variable rate can start lower as a teaser but can rise with the market with no cap. For most households a fixed rate is the safer choice.

Related guides & tools

Offers compiled from https://icc.illinois.gov/plugin/Offers (Illinois Commerce Commission), residential rate class, as of June 22, 2026. Supplier rates change constantly; confirm current price and contract terms on the supplier's site before enrolling. Not affiliated with any state regulator. Source data: illinois-energy.json.