Illinois Energy Rebates 2026: Complete State Guide
Illinois Energy Rebate Overview
Illinois is split between two major investor-owned utilities — ComEd for electricity in northern Illinois and Chicago, Ameren for most of central and southern Illinois — plus a patchwork of municipal utilities and rural cooperatives. The Climate and Equitable Jobs Act (CEJA), passed in 2021, has shaped how Illinois deploys both state and federal energy efficiency dollars, with a particular focus on equity and environmental justice communities.
In 2026, Illinois homeowners have access to utility rebate programs, federal HOMES and HEAR funding through the Illinois Department of Commerce and Economic Opportunity (DCEO), and state solar programs that survived the federal tax credit expiration.
ComEd Energy Efficiency Rebates
ComEd serves about 4 million customers in northern Illinois including Chicago, Cook County, and surrounding suburbs. Their energy efficiency program is one of the more developed in the Midwest:
| Equipment | Standard Rebate | Income-Qualified |
|---|---|---|
| Central heat pump (SEER2 18+) | $500–$1,000 | $2,000 |
| Heat pump water heater | $400 | $800 |
| Smart thermostat | $100 | $150 |
| Insulation (attic) | Up to $800 | Up to $1,500 |
| LED lighting | Instant discount at retailers | Free in some programs |
ComEd rebates are accessible through their online portal at comed.com/energyefficiency. Many rebates require a participating contractor installation, and contractors can apply on your behalf. ComEd's income-qualified programs are accessible to households at or below 80% AMI and include enhanced rebates plus free energy assessments.
Ameren Illinois Rebates
Ameren serves central and southern Illinois. Their Energy Efficiency Program covers both electric and natural gas customers:
- Heat pump: $500–$800 for qualifying units
- Heat pump water heater: $400
- Insulation: Up to $600 for attic insulation
- Smart thermostat: $75
- Income-qualified customers: Enhanced rebates plus free weatherization services
Ameren's program is accessible at amerenillinois.com. For residents outside ComEd and Ameren territory, check with your municipal utility or electric co-op for local programs — some Illinois municipalities run independent programs with rebates comparable to investor-owned utilities.
Federal HEAR in Illinois
Illinois HEAR implementation is managed through DCEO. The program follows federal income thresholds, with Illinois administering the funds through a network of community organizations and energy efficiency contractors:
| Category | At/Below 80% AMI | 80–150% AMI |
|---|---|---|
| Heat pump | $8,000 | $4,000 |
| Heat pump water heater | $1,750 | $875 |
| Electrical panel | $4,000 | $2,000 |
| Insulation/air sealing | $1,600 | $800 |
| Electric stove/range | $840 | $420 |
| Electric dryer | $840 | $420 |
Illinois has designated specific Environmental Justice communities where HEAR outreach is prioritized. If you live in a designated EJ community in Chicago, East St. Louis, or other qualifying areas, contact DCEO or a local community organization for expedited application assistance.
Find current income limits and application information at Illinois energy rebates or through DCEO's Illinois Home Weatherization Assistance Program (IHWAP) portal.
Illinois HOMES Program
HOMES whole-home rebates work on the same structure as in other states — document 20%+ energy savings through a certified auditor, and receive rebates tied to the savings percentage. Illinois HOMES is administered alongside HEAR through DCEO:
- 20–34% savings: $2,000 standard / $4,000 income-qualified
- 35%+ savings: $4,000 standard / $8,000 income-qualified
Illinois' large stock of older housing — particularly in Chicago, where significant portions of housing date to pre-1940 construction — means many homes can achieve substantial energy savings from weatherization. An older bungalow with minimal insulation and air infiltration can hit the 35% threshold with comprehensive air sealing, attic insulation, and basement rim joist insulation alone.
Illinois Home Weatherization Assistance Program (IHWAP)
IHWAP provides free weatherization services to households at or below 200% of federal poverty level. It's federally funded (DOE Weatherization Assistance) and state-administered, serving approximately 25,000 Illinois homes per year when fully funded.
IHWAP services include insulation, air sealing, heating system repair or replacement, and health and safety measures. Average project value is $6,000–$8,000. Applications go through local Community Action Agencies — find your local CAA at illinoisCAA.org.
IHWAP and HEAR are designed to complement each other: IHWAP handles weatherization measures while HEAR can cover equipment. A household going through IHWAP may also be referred to HEAR for heat pump funding.
Illinois Solar for All
The Illinois Solar for All (ILSFA) program, created by CEJA, provides subsidized solar access to low-income households and environmental justice communities. With the 25D federal credit expired, ILSFA becomes more important as the primary solar incentive for qualifying Illinois households.
ILSFA covers:
- Residential solar installations at no or reduced upfront cost for income-qualified households
- Community solar subscriptions with discounted rates for renters and households unsuited for rooftop solar
- Priority enrollment for households in environmental justice communities
ILSFA is administered by the Illinois Power Agency (IPA). Enrollment periods open periodically — check illinoissolarforall.org for current availability. The program has had enrollment windows that fill quickly in some regions.
Stacking Illinois Rebates
A Chicago homeowner in ComEd territory at 80% AMI, replacing a gas furnace with a heat pump and updating insulation:
| Program | Item | Amount |
|---|---|---|
| HEAR | Heat pump | $8,000 |
| ComEd | Heat pump (income-qualified) | $2,000 |
| HEAR | Insulation | $1,600 |
| ComEd | Insulation (income-qualified) | $1,500 |
| HOMES | 35%+ savings | $8,000 |
| Total | $21,100 |
Stacking requires attention to program coordination rules. ComEd rebates and HEAR typically stack without issue — they're funded by separate pools. HOMES stacks with equipment rebates as long as combined rebates don't exceed total project cost. Use the heat pump cost calculator to run your project numbers before committing.
Chicago's Local Programs
Chicago operates additional programs through the Department of Housing and the Mayor's Office of Climate and Environmental Equity:
- Chicago Home Retrofit Accelerator: Connecting Chicago residents to HEAR, ComEd, and weatherization programs through a single entry point
- Renew Chicago: Free energy audits and assistance navigating available programs for homeowners in targeted neighborhoods
- Multifamily energy programs: ComEd and DCEO have specific programs for apartment buildings, covering both landlord and tenant improvements
Chicago renters have limited direct access to equipment rebates (which require owner authorization) but can access community solar subscriptions through ILSFA and some weatherization assistance through landlord programs. See the renters energy rebates guide for what's available without homeownership.
Natural Gas Pipeline Out: The Illinois Context
Illinois has been slower than coastal states in electrification policy, and natural gas remains deeply embedded in the housing stock — particularly older Chicago neighborhoods. The heat pump economics in Illinois favor cold climate units (temperatures regularly below 10°F in winter), and the gas-to-electric switch requires careful calculation of utility rate differences.
Illinois electric rates average around $0.13–$0.15/kWh — lower than coastal states — while natural gas remains relatively cheap in the Midwest. The heat pump payback period in Illinois is typically 8–12 years without rebates, dropping to 4–7 years with full HEAR and utility rebate stacking. See the heat pump vs. gas furnace cost comparison for Illinois-specific calculations.
Downstate Illinois: Different Utilities, Same Federal Programs
Downstate Illinois — outside the Chicago metro — includes a mix of Ameren territory, rural electric cooperatives, and municipal utilities. Ameren's efficiency program is available for its customers statewide, but rural co-ops vary in their rebate programs. The one constant: HEAR and HOMES are statewide federal programs administered through DCEO, available to all Illinois households regardless of utility.
Cities like Peoria, Springfield, and Rockford have their own municipal utilities in some areas alongside investor-owned utilities. Springfield's City Water, Light and Power (CWLP) operates its own electric system — check with CWLP directly for local efficiency programs. Peoria and Rockford are primarily Ameren and Commonwealth Edison territory, respectively, following standard utility program structures.
Illinois Heat Pump Water Heater Opportunity
Illinois is underrepresented in heat pump water heater adoption compared to states with strong HPWH rebate programs. With HEAR covering up to $1,750 for income-qualified households and ComEd offering additional rebates, the economics for HPWH adoption are strong in northern Illinois. Many Illinois homes with basements — extremely common in the state's climate — have appropriate space for HPWH installation. The combination of basement space, HEAR rebates, and ComEd incentives makes Illinois one of the better states for HPWH ROI.
For Chicago homeowners specifically, the ComEd rebate plus HEAR can effectively reduce a $1,400 HPWH to under $100 net cost for income-qualified households. See the Illinois water heater rebate page for current program specifics and use the water heater calculator for your situation.
Chicago's 2024 Building Energy Use Benchmarking Ordinance
Chicago's Building Energy Use Benchmarking Ordinance requires large buildings (50,000+ sq ft) to track and report energy use. While this doesn't directly affect residential homeowners, it has increased the supply of BPI-certified energy auditors and HVAC contractors with heat pump experience in the Chicago market — contractors serving commercial benchmarking clients bring that technical depth to residential projects. For Chicago homeowners, this means a larger pool of qualified contractors for HEAR and HOMES projects than in many similarly-sized cities.