Illinois solar incentives in 2026
The federal tax credit ended for cash and loan buyers — but Illinois’ own incentives went up. Here’s every solar incentive a ComEd or Ameren homeowner can still get in 2026, how they stack, and who qualifies. Sourced, with no promised savings.
The federal credit ended. Illinois’ incentives went up.
The headline most homeowners saw is only half the story. Here’s the part that changed in your favor.
Every Illinois solar incentive, in detail.
Illinois’ value doesn’t come from one credit — it comes from several incentives that stack. Here’s each one, what it’s worth, and how you actually get it.
1. Illinois Shines / SRECs
Illinois Shines (the Adjustable Block Program) pays you for the Solar Renewable Energy Credits your system is expected to produce over 15 years — delivered as one upfront payment. For the 2026–27 program year those values rose (around 36% in Ameren territory). The payment is made to your state-approved installer, who passes the value through your project as a lower price — so it shows up as a discount, not a check you cash. It’s usually the single largest piece of the stack, though the exact figure depends on your system size and the current REC price. Illinois Shines →
2. ComEd & Ameren rebate — $300/kW
Both utilities pay a smart-inverter rebate directly to you: $300 per kW of solar and $300 per kWh of battery storage — about $2,100 on a 7 kW system, more with a battery. It stacks on top of Illinois Shines. One honest caveat: accepting the rebate enrolls you in supply-only net metering — but for any system installed in 2026 that’s already the default, so there’s no real trade-off to make this year. Source →
3. Net metering (supply-only)
You still earn bill credits for the excess power your system sends back to the grid. For systems energized after January 1, 2025, those credits apply to the supply and transmission portions of your bill rather than the full retail rate — which lowers the value of exported power and makes using more of your own production, and pairing solar with a battery, more valuable than it used to be. Source →
4. Property & sales tax exemptions
Two breaks that land immediately and last the life of the system: Illinois excludes the added home value of a residential solar system from your property-tax assessment (so your home can gain value without a higher tax bill), and solar equipment is exempt from Illinois state sales tax. Neither requires an application you manage — they apply by law. Source →
Gone for buyers — but a lease or PPA still captures it.
- A lease or PPA provider owns the system, claims the commercial federal credit, and prices that value into your monthly payment.
- No large upfront cost, and the provider handles design, install, and the federal paperwork.
- This path is time-sensitive — the commercial credit has its own federal deadline, so the window to lock it in is now. Did the solar tax credit end? →
You don’t have to buy to benefit.
Because cash and loan purchases no longer earn a federal credit in 2026, most Illinois homeowners now capture the federal value through a lease or PPA — while still stacking Illinois Shines, the utility rebate, and net metering on top. Whether buying or financing fits you is exactly what a review sorts out. For the bigger picture, see whether solar is worth it in Illinois in 2026.
A review checks whether a lease, PPA, or ownership actually fits your roof, usage, and goals before anyone quotes a number. No promised savings — just the real options for your home.
What the stack looks like on a real system.
An illustrative example — not a quote, and not a savings or payback figure. It shows how the incentives layer onto a sample system; your numbers depend on your home, system size, and final terms.
Sample 7 kW solar system — ComEd territory
A common starting size, shown to illustrate how the incentives stack. All figures are illustrative.
This is not a quote, net savings, payback, or ROI. It shows how incentives stack on an illustrative 7 kW system at the Illinois average price — it does not include financing, your exact SREC value, or final eligibility. Your real numbers come from a full review of your home. Sources: EnergySage, Illinois Shines.
Incentives lower the cost. Rising rates raise the stakes.
The incentives above reduce what a system costs. The other half of the math is what staying fully on the grid costs over time — and ComEd and Ameren rates have climbed sharply (why your bill is so high). The calculator below estimates your next 25 years of bills using public Illinois rate data — an honest estimate, not a quote.
See what doing nothing could cost you.
Match it to your home and watch the chart move. Every figure is an honest estimate — and you control every assumption behind it.
A starting estimate from typical Illinois usage. Know your real bill? Switch to “I know my bill” for a closer number.
An assumption you control — not a prediction. Illinois supply prices recently jumped far more than this in a single year.
The share of your power a well-sized system might cover. Most good-fit homes land near 80–100%.
(estimate, before system cost)
How these estimates work. Figures are illustrative estimates, not a quote, guarantee, or promise of savings. The 25-year cost compounds your monthly bill at the annual increase you select. The “offset” figure is the gross share of that utility cost a system might cover — capped at 100% of your bill, and it does not include system price, financing, taxes, or incentives, which a full review covers. System size is a rough estimate using standard Illinois solar production. When estimating from home size, we assume typical Illinois usage of about 0.40 kWh per sq ft each month for gas-heated homes and 0.75 for electric-heated homes, at an estimated all-in rate of ~16.5¢/kWh (ComEd) or ~15.5¢/kWh (Ameren). Your real numbers depend on your home, roof, shade, usage, system design, and final terms. Rate data last reviewed June 2026 — sources: Plug In Illinois and the Citizens Utility Board.
The incentives above are real money — but only on the system that actually fits your home.
If the stack and the math have your attention, the next step is simple: a quick, no-obligation check of which Illinois incentives your specific ComEd or Ameren home qualifies for. No quote, no pressure — just the real options for your address.
Check my eligibility →The incentives are statewide. The details differ by utility.
Both territories qualify for Illinois Shines, the $300/kW rebate, and net metering — but they sit on different grids, with different supply rates and program specifics. Confirming your utility is always the first step.
ComEd PJM grid
- RegionNorthern Illinois, served by the PJM grid — where capacity-auction costs drove recent supply-price spikes.
- Supply price (Price to Compare)10.399¢/kWh, effective June 1, 2026 — running roughly 47% above the prior year.
- IncentivesIllinois Shines, the $300/kW smart-inverter rebate, and supply-only net metering all apply.
Ameren MISO grid
- RegionCentral and southern Illinois, served by the separate MISO grid.
- Supply price (Price to Compare)11.326¢/kWh summer — about 39% above summer 2024, and where Illinois Shines values rose ~36% for 2026–27.
- IncentivesSame stack — Illinois Shines, the $300/kW rebate, and supply-only net metering — with rate and program details specific to MISO.
Rates are Price to Compare, last reviewed June 2026. Sources: Plug In Illinois & CUB. The Day Company is not affiliated with either utility.
Most of these incentives need the same basics.
The Illinois programs share eligibility ground. Here’s the honest filter before you spend time on a full review.
Owner-occupied, with a roof and property you control — the cleanest fit for Illinois Shines and the utility rebate.
The incentives and rate math are built for these territories, and higher usage makes the numbers more meaningful.
South- or west-facing and not heavily shaded helps a system produce enough to make the incentives worthwhile.
You rent, you’re moving very soon, your roof is heavily shaded or near end of life, or your bill is very low. Honesty saves everyone time.
Illinois solar incentives, answered.
What solar incentives can I get in Illinois in 2026? +
Homeowners in ComEd and Ameren territory can stack Illinois Shines (an upfront SREC payment, increased for 2026–27), a $300/kW smart-inverter rebate from the utility ($300/kWh for battery), supply-only net metering, and state property-tax and sales-tax exemptions. The federal 30% credit is gone for cash and loan purchases but is still captured through a lease or PPA.
Is Illinois Shines still worth it in 2026? +
Yes. Illinois Shines REC values rose for the 2026–27 program year — around 36% in Ameren territory. The program pays for 15 years of your system’s Renewable Energy Credits as one upfront amount, delivered through your state-approved installer as a lower project price.
How much is the ComEd or Ameren solar rebate? +
The smart-inverter rebate is $300 per kW of solar and $300 per kWh of battery storage, paid directly to the homeowner — about $2,100 on a 7 kW system. It stacks on top of Illinois Shines. Taking it enrolls you in supply-only net metering, which is already the default for 2026 installations.
Did the federal solar tax credit end? +
Yes. The federal 30% residential credit (Section 25D) expired December 31, 2025. A system bought with cash or a loan in 2026 earns no federal tax credit. The value is still available through a lease or PPA, where the provider owns the system, claims the commercial credit, and prices it into your payment.
Do Illinois solar incentives stack? +
Yes. Illinois Shines, the utility rebate, net metering, and the property and sales tax exemptions can all apply to the same system, and a lease or PPA can add the federal value on top. The exact combined value depends on your home, system size, and final terms.
Do I pay tax on the home value solar adds? +
No. Illinois excludes the added value of a residential solar system from your property-tax assessment, so your home can gain value without a higher property-tax bill. Solar equipment is also exempt from Illinois sales tax.
See which Illinois incentives your home qualifies for.
You’ve seen the full 2026 stack. The next step is a quick eligibility check to see how the incentives line up for your specific ComEd or Ameren home — and what a system might look like. No pressure, no obligation.