Illinois homeowners pay about 23.85 cents per kWh (EIA residential retail price, May 2026), among the higher rates in the Midwest. The 2026 Illinois solar incentives stack is Illinois Shines SREC payments, income-qualified Solar for All, and a ComEd or Ameren rebate. New systems now get net billing, not full net metering. The federal 25D homeowner credit ended after 2025.
Illinois has one of the more generous solar policy stacks in the country, but it changed in real ways heading into 2026, so what your neighbor got two years ago is not what you get today. The state runs a performance payment for the clean energy your panels make, called Illinois Shines, an income-qualified program called Illinois Solar for All, and utility rebates from ComEd and Ameren. At the same time, new solar customers moved from full retail net metering to net billing, and the 30% federal homeowner credit ended after December 31, 2025. This page covers the real Illinois solar incentives in 2026, how Illinois Shines and its Adjustable Block Program pay you, who qualifies for Solar for All, what the net-billing switch means for your export credit, and how to tell if solar is worth it for your home.
The Illinois solar incentive stack in 2026
Illinois builds its solar value from a state performance payment, an income-qualified program, utility rebates, and net billing, not from a single tax credit. The centerpiece is Illinois Shines, the state program that buys the Renewable Energy Credits your system produces through the Illinois Power Agency (Illinois Shines; Illinois Power Agency). Layered on top are Illinois Solar for All for income-qualified households, a per-kilowatt distributed-generation rebate from ComEd and Ameren, and, since the start of 2025, net billing rather than full retail net metering for new systems.
What changed for 2026 matters as much as what is offered. The 30% federal Residential Clean Energy Credit (Section 25D) ended for expenditures made after December 31, 2025 (IRS), so a 2026 cash or loan purchase in Illinois no longer earns it. And because Illinois Shines runs on annual capacity blocks that can fill and waitlist, the program is open but the timing of your SREC contract depends on the current block, which is why every figure on this page points you to verify the live status before you sign.
See which Illinois solar programs your ZIP code qualifies for
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What solar costs in Illinois, and what your roof makes
Solar pays in Illinois because electricity is not cheap here and the sun is better than people expect. The average Illinois residential electricity price is about 23.85 cents per kWh (EIA retail sales, residential Illinois, as of May 2026), which sits above the U.S. average and above most neighboring Midwest states. Every kilowatt-hour your roof makes offsets one you would otherwise buy at that rate.
Illinois sun turns that rate into solid production. According to MySolarFY’s own analysis (as of August 2026), a 6 kW rooftop system in Chicago is modeled to produce about 7,851 kWh a year (NREL PVWatts v8 run, NSRDB typical-year data). At the state average price, that output offsets roughly $1,872 of grid power a year, before any Illinois Shines payment or rebate. Actual production depends on your roof’s pitch, orientation, and shading, so estimate your own roof with NREL’s free PVWatts calculator, and see typical pricing on our Illinois solar cost guide before you size a system.
Illinois solar incentives at a glance
Illinois value comes from a state performance payment, an income-qualified program, utility rebates, and property-tax treatment, not from a state income-tax credit. Here is what each piece does in 2026 and the fine print worth knowing.
| Incentive | What it does | 2026 status | Source |
|---|---|---|---|
| Illinois Shines (Adjustable Block Program) | Pays you for the Renewable Energy Credits your solar system generates, through a state-approved vendor | Open for the 2026–27 program year on capacity blocks; some categories may be waitlisted when a block is full, so verify the current block status | Illinois Shines |
| Illinois Solar for All | Income-qualified program that reduces or removes up-front cost so the SREC value covers the system | Active for 2026–27 with published budgets and defined submission windows; funding is limited, verify eligibility and availability | Illinois Solar for All |
| ComEd / Ameren distributed-generation rebate | A per-kilowatt rebate for grid-connected solar that uses a smart inverter | ComEd reports rebates up to $300 per kW for eligible systems; verify the current amount and requirements with your utility | ComEd |
| Net billing (formerly net metering) | Credits the solar energy you export to the grid | New systems since January 1, 2025 receive supply-only net billing, not full retail net metering; earlier customers may be grandfathered | DSIRE Illinois |
| Property-tax treatment | Limits the property-tax increase from adding solar | Illinois provides a special assessment so solar is valued no higher than a conventional system; confirm with your county assessor | DSIRE Illinois |
| Federal residential (Section 25D) | A 30% homeowner credit | Ended for expenditures made after December 31, 2025 | IRS |
Heads up on the federal change: the 30% federal Residential Clean Energy Credit (Section 25D) ended for expenditures made after December 31, 2025, under the One Big Beautiful Bill Act (IRS, as of January 2026), so an Illinois homeowner who buys solar with cash or a loan in 2026 cannot claim it. Illinois Shines, Solar for All, and the utility rebates are separate state programs and were not affected by that federal change. Confirm every figure against the linked source, and ask a tax professional about your own situation. MySolarFY does not provide tax advice.
Illinois Shines and the Adjustable Block Program: how you get paid for SRECs
Illinois Shines is the reason solar economics in Illinois look different from most states: the state pays you for the clean energy your panels produce. Through the Adjustable Block Program, run by the Illinois Power Agency, an approved vendor buys the Renewable Energy Credits (a residential REC is the state’s version of a Solar Renewable Energy Certificate) that your system generates over a 15-year term, usually paid as an up-front lump sum that lowers your net cost (Illinois Shines; Illinois Power Agency). If you are new to how these credits work, our guide to solar renewable energy certificates explains the mechanics.
The catch is capacity. Illinois Shines runs on annual blocks of megawatts, and when a block for your utility group and project category fills, new applications go on a waitlist until the next program year opens fresh capacity (Illinois Shines Block Capacity Dashboard). As of August 2026 the 2026–27 program year is open with new capacity, but some categories carry a waitlist from the prior year, so the program being open does not guarantee your specific project gets an immediate contract. A state-approved vendor handles the SREC paperwork, and the program is administered by Energy Solutions, so ask your installer which block your project would enter before you count on the payment.
Illinois Solar for All: income-qualified solar with little or no up-front cost
Illinois Solar for All is the program that makes solar reachable for lower-income households, and it is genuinely different from the standard incentive path. It is designed so that qualifying households pay little or nothing up front, because the value of the Renewable Energy Credits covers the cost of the system rather than the homeowner (Illinois Solar for All). Eligibility is income-based, and the program covers residential solar along with community solar and nonprofit projects.
Funding is real but limited, so timing matters. The Illinois Power Agency published the 2026–27 budgets for Solar for All, including a residential allocation, and set defined submission windows rather than open, year-round intake (Illinois Power Agency). Because the budget can be fully committed within a program year, a household that qualifies still competes for available funds, so confirm current eligibility and availability with an approved vendor before you assume a spot. This is a state program, not a MySolarFY offer, and it is not the same as a lease or PPA.
Net metering in Illinois is now net billing
This is the change that catches most Illinois solar shoppers off guard. For systems that began net metering service on or after January 1, 2025, ComEd, Ameren Illinois, and MidAmerican moved new residential and small-commercial customers from full retail net metering to supply-only net billing (DSIRE Illinois; U.S. Department of Energy on net metering). Under the old rule, every exported kilowatt-hour offset one you pulled back at the full retail rate. Under net billing, your exports are credited on the supply portion of the rate, which is a lower value than the all-in retail price.
What that means in practice: the export credit is smaller, so self-consumption and the up-front incentives matter more. Customers who locked in interconnection before the cutoff may be grandfathered on the older terms, and the exact credit rate and rules are set by each utility’s tariff, so verify your status and current export credit with ComEd or Ameren before you size a system (DSIRE Illinois). For how export credits work in general, see our explainer on how net metering credits your solar exports, and for a ComEd-specific walkthrough see our ComEd solar guide.
ComEd and Ameren solar rebates
On top of the SREC payment, Illinois utilities offer a per-kilowatt rebate for solar that uses a smart inverter. ComEd runs a distributed-generation rebate that requires a smart inverter and, as of August 2026, reports rebates of up to $300 per kW of generating capacity for eligible systems (ComEd). Ameren Illinois offers a comparable smart-inverter rebate in its territory. These are separate from Illinois Shines and from your export credit, and the exact amount, cap, and equipment requirements are set by the utility, so confirm the current figure with your utility before you count on it.
| Utility | Rough service area | Solar approach (2026) | Source |
|---|---|---|---|
| ComEd | Northern Illinois, including Chicago | Distributed-generation rebate up to $300 per kW for smart-inverter systems; new customers on supply-only net billing since Jan 1, 2025 | ComEd |
| Ameren Illinois | Central and southern Illinois | Smart-inverter rebate available; new customers on supply-only net billing since Jan 1, 2025 | DSIRE |
| MidAmerican / municipal utilities | Parts of Illinois outside ComEd and Ameren | Terms vary by utility; some municipal utilities run their own programs, verify directly | DSIRE |
Is solar worth it in Illinois?
For many Illinois homeowners, yes, because the state stack does real work. Above-average electricity prices, a state SREC payment through Illinois Shines, a utility rebate, and, for some households, Solar for All can add up to a strong case even without the federal homeowner credit. The honest catches are that the federal 25D credit is gone as of 2026, new systems earn the smaller net-billing export credit rather than full net metering, and Illinois Shines capacity can be waitlisted, so timing matters. Whether it pays for your specific home comes down to your roof, your utility, and your usage. For a deeper look, see whether solar panels are worth it, the full state picture on our Illinois solar hub, and how incentives stack nationally in our solar incentives overview.
How you pay decides which benefits you keep. The 30% federal homeowner credit (Section 25D) ended for expenditures made after December 31, 2025, so it is not part of a 2026 purchase on any path. If you buy the system with cash or a loan, you own it and take the Illinois Shines SREC payment, the utility rebate, and any property-tax benefit directly. If you lease or sign a power-purchase agreement, a third party owns the panels, you typically pay little or nothing up front, and the company that owns the system claims any commercial credit (Section 48E), not you. Solar panels are not free and monthly payments apply on a lease or PPA. For the federal picture, see what the federal solar tax credit change means in 2026, and how we source our numbers on our data and methodology page. MySolarFY matches you with licensed Illinois installers so you can compare real local quotes side by side, with no obligation.
Frequently asked questions
What solar incentives does Illinois offer in 2026? Illinois offers Illinois Shines, a state program that pays you for the Renewable Energy Credits your solar system generates through the Adjustable Block Program; Illinois Solar for All, an income-qualified program with little or no up-front cost; a ComEd or Ameren per-kilowatt rebate for smart-inverter systems; a property-tax special assessment; and net billing for exported power. There is no state solar income-tax credit. The 30% federal homeowner credit ended for expenditures made after December 31, 2025. Verify current program status before you sign.
What is Illinois Shines and how does it pay me? Illinois Shines is the state’s incentive program, run by the Illinois Power Agency through the Adjustable Block Program. A state-approved vendor buys the Renewable Energy Credits your system produces over a 15-year term, usually as an up-front lump sum that lowers your net cost. The program runs on annual capacity blocks, so when a block is full, new projects can be waitlisted until the next program year. As of August 2026 the 2026 to 2027 program year is open, but verify the current block status for your project.
Does Illinois still have net metering? Not in the full-retail form for new systems. For systems that began net metering service on or after January 1, 2025, ComEd, Ameren Illinois, and MidAmerican moved new residential customers to supply-only net billing, which credits exports at a lower value than the full retail rate. Customers who interconnected before the cutoff may be grandfathered on the older terms. Verify your status and the current export credit with your utility before you size a system.
Who qualifies for Illinois Solar for All? Illinois Solar for All is income-qualified, so eligibility is based on household income, and it is designed so qualifying households pay little or nothing up front because the Renewable Energy Credit value covers the system. It is a state program administered through the Illinois Power Agency, with published budgets and defined submission windows for each program year. Funding is limited and can be fully committed, so confirm current eligibility and availability with an approved vendor.
Do ComEd and Ameren offer solar rebates? Yes. ComEd runs a distributed-generation rebate that requires a smart inverter and, as of August 2026, reports rebates of up to $300 per kW of generating capacity for eligible systems. Ameren Illinois offers a comparable smart-inverter rebate in its territory. These are separate from Illinois Shines and from your export credit, and the amount and requirements are set by the utility, so confirm the current figure directly before you count on it.
What happened to the federal solar tax credit in Illinois? The 30% federal Residential Clean Energy Credit (Section 25D) ended for expenditures made after December 31, 2025, under the One Big Beautiful Bill Act, so an Illinois homeowner who buys solar in 2026 with cash or a loan cannot claim it. A separate commercial credit (Section 48E) can apply to leased and PPA systems, but the business that owns the system claims it, not the homeowner. Illinois Shines, Solar for All, and the utility rebates are state programs and were not affected.
Is there an Illinois state solar tax credit? No. Illinois does not offer a state income-tax credit for residential solar. Its value comes instead from Illinois Shines SREC payments, Illinois Solar for All for income-qualified households, ComEd and Ameren rebates, a property-tax special assessment, and the export credit under net billing. These state programs do not depend on the federal credit that ended after 2025.
Reviewed by the MySolarFY team. Figures were verified against the linked EIA, NREL, IRS, DSIRE, Illinois Power Agency, Illinois Shines, Illinois Solar for All, ComEd, and U.S. Department of Energy sources as of August 2026; Illinois program capacity, budgets, and utility terms change, so confirm current Illinois Shines block status, Solar for All eligibility, and rebate amounts with the program or your utility before you decide. MySolarFY does not provide tax or financial advice; consult a licensed professional about your own situation. Learn more about the MySolarFY team and how we work, and browse more states from our solar by state hub.
MySolarFY is a free service that matches homeowners with licensed solar installers. We are not an installer, financing company, or government program. “No up-front cost” refers to qualifying lease or PPA financing, where eligible homeowners may have no out-of-pocket cost at installation. Lease and PPA terms typically run 20 to 25 years, may include an annual price escalator, and total payments may exceed the cost of a cash purchase. Homeowners do not get the federal residential credit that ended after December 31, 2025; on a leased system the company that owns it claims any commercial credit. Solar panels are not free and monthly payments apply. Eligibility, savings, incentives, and rates vary and are not guaranteed. See our full disclaimer.
