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How to Lower Your Electric Bill This Winter in Illinois: 7 Moves Ranked by Real 2026 Dollars
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How to Lower Your Electric Bill This Winter in Illinois: 7 Moves Ranked by Real 2026 Dollars

Ryan Cook•

The quickest way to lower an Illinois electric bill this winter is to fix the rate you're paying, not to swap light bulbs. In Ameren territory, 259 of 260 town aggregation deals on the state's October 30, 2026 list cost more than Ameren's own 10.441¢/kWh price, and leaving one could save an estimated $13 to $28 a month. ComEd homes with all-electric heat can cut delivery by an estimated $28 a month at 1,000 kWh just by getting on the right rate class. Behavior tips come after those two.

I sell solar across Illinois, so I spend a lot of time reading other people's electric bills at kitchen tables. What I see most in November isn't someone wasting power. It's someone paying 12 or 13 cents when their neighbor pays 10, or an electric-heat home billed like a regular house. Here are seven moves, roughly in order of what they're worth.

The numbers, in one place

What Figure When / source
Ameren supply price to compare 10.441¢/kWh first 800 kWh, 8.262¢ above Oct 1, 2026 – May 31, 2027 (ICC Plug In Illinois)
Ameren delivery, non-summer 4.572¢ first 800 kWh, 2.427¢ above 2026 rates; 4.687¢ and 2.488¢ from January 2027 (Ameren Rate PBR-R)
Ameren-area aggregation deals above Ameren 259 of 260, average about 12.02¢ ICC aggregation list, pulled Oct 30, 2026
ComEd price to compare 10.103¢/kWh Oct 1, 2026 – May 31, 2027 (ICC Plug In Illinois)
ComEd delivery, standard vs. space-heat class 6.333¢ vs. 3.215¢ per kWh Bills since April 2026 (ComEd)
ComEd Purchased Electricity Adjustment +3.758¢/kWh charge November 2026 (ComEd Informational Sheet No. 3)
LIHEAP applications, all eligible households Open November 1, 2026 Through Aug 13, 2027 or until funds run out (DCEO)
Thermostat setback Up to 10% a year on heating and cooling 7–10°F for 8 hours a day (U.S. Department of Energy)

1. Ameren customers: check who's selling you power (est. $13–$39 a month)

Look at the supply section of your Ameren bill. If it says Ameren, you're on the utility's price. If it names a supplier like Homefield Energy or Direct Energy, your town probably signed you up through municipal aggregation, and that's where the money leaks.

I pulled the Illinois Commerce Commission's aggregation list again this morning. Of 260 live, priced deals in Ameren territory, 259 are above 10.441¢. The average is about 12.02¢. Peoria sits at 13.29¢ through June 2027, Belleville at 13.09¢, Bloomington and Normal at 12.76¢, Champaign at 10.899¢. Canton, at 9.999¢, is the lone town below Ameren.

Winter makes the gap bigger, not smaller. Ameren's supply price drops to 8.262¢ on every kWh above 800 in a month, but aggregation contracts on the state list carry one price per kWh. Here's what that's worth at the average 12.02¢ deal (supply only, estimated):

Monthly use Average aggregation deal Ameren supply Estimated extra cost
800 kWh $96 $84 about $13
1,200 kWh $144 $117 about $28
1,500 kWh $180 $141 about $39

At Peoria's 13.29¢, a 1,200 kWh month runs an estimated $43 over Ameren. The state's Plug In Illinois page says you won't pay an early termination fee to go back to the utility. I walked through the Homefield Energy vs. Ameren math town by town in September, and the Ameren bill explainer shows where the supply line sits.

2. ComEd electric-heat homes: get on the space-heat rate (est. $28–$59 a month)

ComEd bills delivery by rate class, and the space-heat class is a lot cheaper per kWh: 3.215¢ instead of 6.333¢ on single-family bills since April 2026. The customer charge is a few dollars higher, so it only pays if your heat is electric. When it is, the savings are real: about $28 a month at 1,000 kWh and about $59 at 2,000 kWh, estimated on delivery alone.

ComEd's Go Electric site says you qualify when space heating is fully electric, backup and secondary heat included. That includes a heat pump conversion that gets you there. Your class is printed in the charge details on your bill. I see homes that went to a heat pump years ago and never got moved. My ComEd space-heat rate guide has the full table.

Ameren homes get a winter break without asking for it. Above 800 kWh, delivery drops to 2.427¢ (2.488¢ on 2027 bills) and supply to 8.262¢, so an electric-heat home's extra winter kWh run about 10.7¢ before taxes and riders, versus about 15¢ for the first 800.

3. Apply for LIHEAP on November 1 if you're anywhere near the line

This is the one people skip because they assume they earn too much. For 2026-27, ComEd and Ameren customers qualify at up to 300% of the federal poverty level. For a family of four, that's $8,250 in gross income over the 30 days before you apply, roughly $99,000 a year. Priority households could apply starting October 1. Everyone else can apply starting November 1, 2026, and applications run through August 13, 2027 or until the money runs out.

LIHEAP is also the doorway to the utility discounts. Ameren started its Electric Service Discount on October 1, 2026, and ComEd's income-based discount runs from 5% to 80% of the bill for households up to 300% of poverty. The income limits by household size are here, and if you're already behind, Ameren's down payment drops to 10% on December 1.

4. ComEd customers: don't let November's bill push you into a bad contract

ComEd's November bills carry a Purchased Electricity Adjustment of +3.758¢/kWh, up from a 1.551¢ credit in October. A bigger nuclear credit offsets part of it, but a 750 kWh home still sees an estimated $22 more than October. That spike is when door-knockers and mailers show up with "lock in now" offers.

Don't sign anything because of one month. The Commerce Commission says the adjustment is expected to average near zero over the planning year, and it isn't part of the 10.103¢ price to compare. Judge any offer against 10.103¢ and its full contract length. On the state list, 78 of 97 fixed-price ComEd-area aggregation deals are at or below 10.103¢, so northern Illinois towns mostly aren't the problem Ameren towns are. Here's how the November adjustment works.

5. Put space heaters on a timer (est. $38–$60 a month per heater)

A typical 1,500-watt space heater uses 1.5 kWh every hour it runs. At winter rates, that's about 16¢ an hour on Ameren above 800 kWh and roughly 25¢ an hour on ComEd's standard class. Run one eight hours a day for a month and it's an estimated $38 to $60. Two of them in a cold basement can add more to a ComEd bill than the whole rate-class fix saves.

They make sense for heating one room while the furnace runs cooler. They don't make sense as a second heating system running all day. A plug-in timer costs less than one week of that heater.

6. Set the thermostat back at night (up to 10% of heating)

The Department of Energy says you can save as much as 10% a year on heating and cooling by turning the thermostat back 7 to 10 degrees for 8 hours a day. In a gas-heated Illinois home, most of that shows up on the gas bill, though the furnace blower runs on electricity too. In an all-electric home, it lands right on the ComEd or Ameren bill.

One caution for heat-pump owners, also from the DOE: programmable thermostats "have generally not been recommended for heat pump systems," though some newer models made for heat pumps make a setback cost-effective. In my experience the worry is backup resistance heat kicking on while the house warms back up, which costs more than the setback saved. If you're weighing a switch, I compared heat pump vs. gas furnace costs on current Illinois rates.

7. Know what budget billing does and doesn't do

Budget billing smooths your bill. It doesn't shrink it. Ameren settles up either in May or November depending on when you enrolled, and this past summer's supply price was 11.326¢ on the first 800 kWh, up from 8.769¢ the winter before. If your anniversary is November, the usage the level payment didn't cover is coming due now, as one charge or spread over the next 12 months.

Compare your budget amount to the actual charges on your last statement. The settle-up mechanics are here. The first six moves on this list are what lower the actual charges your budget amount is built from.

Where solar fits, honestly

Solar won't rescue this January. Across nine Illinois towns, December through February produces only about 17 to 18% of a south-facing system's yearly output. It earns its money from March through September, when long days do the work and summer rates are highest. I covered the month-by-month production curve and why fall is still a good time to start, since permitting and utility approval take weeks.

If your yearly electric spending keeps climbing, that's the conversation worth having. Our lease option is $0 down with a predictable monthly payment set in a 25-year contract, and we also do cash purchases and Solar for All for income-qualified homes. Run your numbers in the savings calculator, or call me at (618) 217-2001 or reach out here, and I'll read your bill with you, the winter one included.

Sources

Frequently Asked Questions

Start with the rate you pay, because that's where the biggest winter dollars sit in Illinois. In Ameren territory, check the supply section of your bill. If a town aggregation supplier is billing you more than Ameren's 10.441 cents per kWh price to compare, opting out could save an estimated $13 to $28 a month on an 800 to 1,200 kWh month, and 259 of 260 live Ameren-area deals were above that price on the state's October 30, 2026 list. In ComEd territory, homes heated fully by electricity should confirm they're on the space-heat delivery class, worth an estimated $28 a month at 1,000 kWh. After that, apply for LIHEAP from November 1 if your household earns under about 300% of the poverty line, keep space heaters on a timer, and set the thermostat back at night. Those last steps typically save less than the rate fixes, but they add up across a winter.
Probably, if your town's price is above Ameren's. From October 1, 2026 through May 31, 2027, Ameren Illinois' price to compare is 10.441 cents per kWh on the first 800 kWh and 8.262 cents above 800, per the Illinois Commerce Commission. On the Commission's aggregation list pulled October 30, 2026, 259 of the 260 live, priced Ameren-area deals were above 10.441 cents, averaging about 12.02 cents. Canton, at 9.999 cents, was the only one below. On a 1,200 kWh winter month, the average deal costs an estimated $28 more for supply than Ameren, because aggregation contracts list one price per kWh while Ameren's drops after 800. The state's Plug In Illinois page says there's no early termination fee to return to the utility. Call the supplier named on your bill or the number on your town's aggregation notice, and check your town's rate on the ICC list first.
Budget billing can be worth it for predictability, but it doesn't lower what you pay over a year. Ameren Illinois sets the monthly amount from your previous 12 months of usage and settles the difference either in May or November, depending on when you signed up. That November timing matters this year. Ameren's summer 2026 supply price was 11.326 cents per kWh on the first 800 kWh, up from 8.769 cents the winter before, so a November anniversary can bring summer usage the level payment didn't cover. Ameren offers a rollover that spreads the difference over the next 12 months or a one-time settlement. If your budget amount looks low compared with the actual charges printed on your last statement, expect a settle-up and plan for it. Budget billing pairs well with the real savings moves, like opting out of an above-market aggregation deal, because those lower the actual charges that your budget amount is based on.
Yes. ComEd's single-family electric space-heat delivery class charges 3.215 cents per kWh plus a 0.136 cent distribution tax, compared with 6.333 cents plus 0.128 cents on the standard single-family class, on bills since April 2026. The customer charge is higher, $18.45 versus $15.50, and metering is $4.09 versus $3.87, but at 1,000 kWh a month the delivery side works out to an estimated $56 instead of $84, about $28 less. At 2,000 kWh it's an estimated $59 less. ComEd's Go Electric site says you qualify when your home's space heating is fully electric, including backup and secondary heat, and that the lower rate applies to all of your electricity use. Check the rate classification in your bill's charge details. If it doesn't say space heat and your heat is all electric, call ComEd at 1-800-EDISON1 and ask to be moved.
A little, but winter isn't where solar does its work in Illinois. Across nine Illinois towns, December through February produces only about 17 to 18 percent of a south-facing system's yearly output, based on NREL solar data for those towns, because days are short and the sun sits low. Snow can also cover panels for a few days at a time. Where solar earns its keep is March through September, when long days cut the biggest share of your yearly bill and Ameren's summer supply price ran 11.326 cents per kWh in 2026. That's why I tell people to judge solar on the full year, not on one January bill. A lease is built that way: $0 down and a predictable monthly payment set in a 25-year contract, so the comparison is your yearly utility spending against that schedule. A system installed this winter still has to get through permitting and utility approval before it turns on.

Related City Guides

Peoria, ILBelleville, ILBloomington, ILNormal, ILChampaign, ILCanton, ILChicago, ILNaperville, IL

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Here's what actually drops.Who Fixes Your Solar Panels in Illinois When Something Breaks?Who actually fixes solar panels in Illinois? Maintenance costs, what a lease covers, and what to do if your installer stopped answering the phone.Will Your Illinois Electric Bill Go Back Down? PJM Just Locked In Prices Through 2029PJM's July 2026 capacity auction cleared at $325/MW-day for 2028-29 — the third straight auction at the price cap. Why your Illinois bill isn't dropping soon.Illinois Logged 832 Solar Complaints in 2025 and Has Paid $473,000 Back to Burned Customers — What Actually Went Wrong, and Who Gets PaidIllinois logged 832 solar complaints in 2025, and its restitution fund has paid 170 customers nearly $473,000. Here's what goes wrong and who gets paid.Do You Need a New Roof Before Solar in Illinois? (2026 Roof-Age Rules)Old roof, new panels? Pulling solar off for a roof job runs an estimated $2,800-$6,000. The Illinois roof-age rule, and how to sequence both jobs to pay once.Can You Rent Solar Panels in Illinois? What Actually Exists in 2026There's no such thing as renting solar panels in Illinois. But there is Community Solar — a state-vetted subscription that gets you bill credits without any equipment. Here's how it actually works.New Illinois Laws: A Family of Four Earning $99,000 Can Now Get Help With Their Electric BillPritzker signed HB 4456 and HB 5524 on July 9. One raises energy-assistance income limits to 300% of poverty. The other itemizes every charge on your bill.Do Solar Panels Increase Your Property Taxes in Illinois? (2026)Adding solar raises your home's value — so will your property taxes jump too? In Illinois, no. The state's special solar assessment keeps that value off your tax bill.New Illinois Solar for All Income Limits (2026): $97,200 for a Cook County Family of FourIllinois Solar for All raised its income limits on June 1, 2026. A family of four can earn $97,200 in Cook County and still qualify. Here are the county numbers.Will Illinois Have Rolling Blackouts? What ComEd's 'Critical Level' Alerts Mean (2026)ComEd told parts of Chicagoland the grid hit a 'critical level' during the July heat wave. Here's the honest answer on rolling blackout risk in Illinois — and what you can control.Freedom Forever Filed for Bankruptcy — What Illinois Solar Customers Should Do NowFreedom Forever filed Chapter 11 in April 2026. If your Illinois solar system is installed, unfinished, or under quote — here's exactly what to do next.ComEd & Ameren Want Another Rate Hike — CUB Found $1 Billion in Questionable SpendingComEd filed a $15.3B grid plan and Ameren wants millions more — CUB found over $1 billion in questionable spending. What the next IL rate hikes mean for you.What Solar Panels Really Cost in Illinois in 2026 (Honest Numbers, No Lead-Selling)What solar panels actually cost in Illinois in 2026 — real per-watt and per-system numbers, what changed this year, and why we don't sell your info to five callers.Illinois Electric Rates Keep Climbing — Does Solar Finally Make Sense in 2026?Ameren and ComEd rates are up ~90% in five years and still climbing. Here's how to see what you're on track to overpay — and whether solar finally makes sense.Illinois Net Metering Changed in 2025 — What It Costs You and How to Protect Your SavingsIllinois ended full retail net metering on Jan 1, 2025. Here's what the switch to net billing actually costs solar owners — and how to protect your savings.The 30% Solar Tax Credit Ended — Here's How Illinois Homeowners Still Get It in 2026The 30% federal tax credit ended for homeowner-owned systems on Dec 31, 2025. Here's how Illinois homeowners can still capture federal solar value in 2026.How Much Does a Solar Lease Cost Per Month in Illinois? (2026)What does a solar lease actually cost per month in Illinois? Real 2026 numbers, what's included, and how a predictable lease rate compares to a rising utility bill.Ameren vs ComEd 2026: Which Costs More Per kWh? (ComEd Runs ~1.5¢ Higher)ComEd averages ~17¢/kWh, Ameren Illinois ~15.5¢/kWh. See the full 2026 breakdown: supply charges, delivery fees, summer spikes, and how much it costs per month.Ameren Rate Increase 2026: Summer Rate Ends — Oct 1 Price to Compare Is 10.441¢ (ComEd 10.103¢)Updated September 30, 2026: the Ameren rate increase put the summer Price to Compare at 11.326¢/kWh (ComEd 10.399¢) through September 30; from October 1 it is 10.441¢ (ComEd 10.103¢). See the average Illinois electric rate now, why bills jumped June 1, and what changed October 1.The Iran War Is Sending Oil Prices Through the Roof — Will Your Illinois Electric Bill Follow?Oil is at $112/barrel after the Strait of Hormuz blockade. Here's how the Iran conflict could push Illinois electricity rates even higher — and what you can do now.Why Your Ameren Bill Keeps Going Up (and What MISO Has to Do With It)Ameren bills jumped 18-22% in summer 2025 and rose again June 1, 2026. Here's why MISO capacity auctions are driving your rates up and what you can do about it.The Real Cost of Solar Panels in Illinois: 2026 BreakdownWhat do solar panels actually cost in Illinois in 2026? Real numbers for cash purchase, lease, and Solar for All — from an installer who gets prices below the state average.Selling a House With Leased Solar Panels in Illinois (2026 Guide)Selling a house with leased solar panels in Illinois? Here's how the lease transfer works, what buyers actually think, and why it's not the problem most people expect — owned systems too.Solar Lease vs Buying Panels: I Did the Math for IllinoisShould you lease or buy solar panels in Illinois? I broke down the real numbers for both paths using current 2026 prices, incentives, and Ameren/ComEd rates.Data Centers = 70% of Illinois's Rate Spike (Here's What It Costs You)Data centers drove 70% of Illinois's capacity-cost spike in 2026. See the PJM/MISO mechanism, the per-household cost impact, and what to do to protect your bill.ComEd Rate Increase 2026: Oct 1 Supply Drops to 10.103¢, but Delivery Didn'tUpdated Oct 2026: ComEd's 2026 rate increase put the Price to Compare at 10.399¢/kWh through September 30; from October 1 it is 10.103¢/kWh. What changed June 1, what reset October 1, the ICC delivery increases that didn't reset, and your all-in cost per kWh.Illinois Electricity Rates Have Nearly Doubled Since 2021 — Here's What That Means for Your BillIllinois electricity rates have surged 90%+ since 2021. Here's what's driving the increases, what to expect next, and how to protect your household.Illinois Solar Incentives 2026: 7 Programs Worth $12,000-$18,000+Illinois solar incentives 2026: Illinois Shines RECs, the new $20/REC customer-owned adder, $300/kW DG rebate, battery rebate, net metering, and property tax exemption — worth $12,000-$18,000+ on an owned system. Plus no-cost Solar for All for income-eligible households.Solar Battery Backup in Illinois — What It Actually Powers and Whether It's Worth ItWhat does a solar battery actually run during an outage? How much does it cost with the $300/kWh rebate? Here's the honest breakdown for Illinois homeowners.
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