Solar Tax Credits & Incentives in Iowa & Illinois: The 2026 Guide
What actually still applies to a homeowner or business going solar in Iowa or Illinois this year, state by state and utility by utility, without the recycled “get 30% back” pitch that stopped being true for most homeowners at the end of 2025.
The short version
- The 30% federal residential credit (Section 25D) ended for systems placed in service after December 31, 2025. If you buy with cash or a loan in 2026, there is no federal residential tax credit.
- A Lease or PPA (a third-party-owned system) is the main way a homeowner still captures credit-equivalent value in 2026: the financing company owns the system and claims the separate commercial credit (Section 48E), then passes savings through in your payment.
- Iowa has no state income-tax credit for residential solar since 2022, but keeps a 5-year property-tax exemption and a sales-tax exemption on qualifying equipment.
- Illinois Shines is not a rebate. It is a 15 to 20-year forward sale of your system’s Renewable Energy Certificates (RECs), monetized upfront by an Approved Vendor.
- Net metering ended for new ComEd and Ameren customers on January 1, 2025. New systems in both territories use net billing plus one-time smart-inverter and battery rebates instead.
- This page is educational information, not tax advice. Confirm every figure with a licensed tax professional and with your specific utility before you sign anything.
What Actually Happened to the Federal Solar Tax Credit
For years, “30% federal tax credit” was the single most common solar sales line in the country. As of 2026, it is no longer accurate for most homeowners, and repeating it is one of the fastest ways an installer loses your trust. Here is what actually changed.
Cash or Loan Purchase: The 25D Credit Is Gone
Under the One Big Beautiful Bill Act (signed July 4, 2025), the 30% federal Residential Clean Energy Credit (Section 25D) ended for any system placed in service after December 31, 2025. “Placed in service” generally means the utility has granted permission to operate, so even a system installed in late 2025 could miss the deadline if interconnection slipped into 2026. If you own your system outright through cash or a loan and it went live in 2026, there is no federal residential credit for it. Full stop.
Lease or PPA: Credit-Equivalent Value Still Flows Through
A Lease or Power Purchase Agreement works differently: a third-party financing company owns the system, not you. Because that company is a business claiming a business asset, it can still claim the commercial solar credit (Section 48E), which has not been eliminated the way the residential credit was. That value gets built into your monthly payment as a lower rate than you’d otherwise pay your utility. This is why a Lease or PPA is often the more financially direct path to 2026 savings for homeowners who are not planning to pay cash.
Commercial & Farm Owners: Section 48E, on a Timeline
Businesses, farms, and third-party owners financing your Lease or PPA generally need to either commence construction by roughly July 2026 or place the system in service by December 31, 2027, to lock in Section 48E under current guidance, and new foreign-sourcing rules affect which equipment stays eligible. Depreciation (bonus and MACRS) is a separate, real benefit on top of the credit for a business that owns its system. These rules move. Confirm the current deadline and depreciation schedule with your CPA or tax attorney before signing a contract, not after.
SolQ is not a tax advisor, CPA, or law firm. Everything on this page about federal or state tax treatment is general information, current as of the date noted above, and is not tax advice for your specific situation. Tax credit eligibility depends on your income, filing status, ownership structure, and the specific timing of your project. Always confirm applicability with a licensed tax professional before making a purchase decision based on any credit or deduction.
Iowa: Property Tax, Sales Tax, and Net Billing
No State Income-Tax Credit
Iowa closed its residential solar tax credit to new applicants in 2022. It is still occasionally marketed as active by out-of-state sales teams working off old scripts. It is not active for a system installed in 2026.
5-Year Property Tax Exemption
The added home value your solar system creates is exempt from added property-tax assessment for five years. You keep the equity without an immediate higher tax bill.
Sales Tax Exemption on Equipment
Qualifying solar equipment, panels, inverters, racking, wiring, and monitoring hardware, is exempt from Iowa’s 6% sales tax. Labor is generally still taxable, so this applies to the equipment line of your proposal, not the full invoice.
Net Billing, Not Net Metering
Alliant Energy (Interstate Power and Light) and MidAmerican Energy use Inflow-Outflow billing for systems installed since 2020: what you draw and what you export are tracked separately, in 15-minute intervals, up to a sizing cap around 110% of your usage. Ames and Cedar Falls run their own municipal utilities with their own separate rules. A statewide “Value of Solar” rate reset can also be triggered at a 5% adoption threshold or by July 1, 2027, whichever comes first.
Illinois: Illinois Shines, ComEd, Ameren, and Net Billing
Illinois Shines Is a REC Sale, Not a Rebate
Illinois Shines (the Illinois Power Agency’s Adjustable Block Program) does not hand a homeowner a rebate check. It is a 15 to 20-year forward sale of the Renewable Energy Certificates, or RECs, your system will generate. An Approved Vendor collects that REC contract value and typically builds it into your project price, your loan terms, or your lease/PPA rate upfront, rather than paying it to you directly over time.
SolQ is a registered Illinois Shines Designee working under multiple Approved Vendors, not an agency of the State of Illinois or the Illinois Power Agency, and we are not affiliated with or endorsed by either. Block capacity and REC pricing change by program category and shift over the course of a program year, so we confirm the current terms from the live Illinois Shines dashboard as part of every Illinois proposal rather than quoting a fixed number here.
If your system’s RECs are sold into Illinois Shines, that is a sale of the environmental attributes of your electricity, not a claim that your household runs on 100% newly-generated clean power outside the grid.
ComEd Territory (Northern Illinois)
New ComEd customers get a one-time Solar Generation Rebate of $300 per kW of system capacity (a 6 kW system works out to roughly $1,800), which requires a smart inverter and applies to systems under 5,000 kW. A separate Battery Storage Rebate pays $300 per kWh of battery capacity, and requires enrollment in ComEd’s hourly Rate BESH pricing program. Full net metering ended for new ComEd customers on January 1, 2025; new systems run on net billing, which credits exports against the supply portion of your bill rather than the full retail rate.
Ameren Illinois Territory (Central & Southern Illinois)
Ameren offers the same $300 per kW Smart Inverter Rebate and $300 per kWh Battery Storage Rebate structure. The battery rebate requires enrolling in one of Peak Time Rewards (no added cost), Real Time Pricing, or Power Smart Pricing (a small monthly fee applies). Net metering also ended January 1, 2025 for new Ameren customers, replaced by net billing on the same supply-credit basis as ComEd. Systems documented complete by December 31, 2024 keep full net metering for the 30-year life of the generator.
MidAmerican Territory (Quad Cities)
Moline, Rock Island, and the surrounding Quad Cities area sit in MidAmerican Energy territory, a separate utility with its own Illinois-side tariff that does not automatically follow the ComEd/Ameren rules above. We confirm MidAmerican’s current net billing and interconnection terms directly before designing a Quad Cities system rather than assuming statewide rules apply.
Illinois also passed the Clean and Reliable Grid Affordability Act in January 2026, setting a statewide 3 GW battery storage target, doubling the community solar project cap, and requiring ComEd and Ameren to stand up Virtual Power Plant programs that pay customers for demand flexibility. These programs are new and still standing up. We track them and will update this page as they become concretely available to homeowners.
What Real SolQ Systems Look Like
We are not going to publish a generic “dollars per watt” number here. Solar pricing depends on your roof, your equipment, your financing structure, and which incentives actually apply at your address, and a single statewide average would flatten all of that into a number that is not really true for anyone. Instead, here is what SolQ has actually installed, pulled directly from our own completed-project records.
| Metro / City | State | Completed installs on file | System size range | Median size | Primary utility |
|---|---|---|---|---|---|
| Cedar Rapids metro (Linn & Benton counties) | Iowa | 168 | 2.7–21.7 kW | 7.1 kW | Alliant Energy |
| Dubuque metro | Iowa | 123 | 2.8–21.3 kW | 6.9 kW | Alliant Energy |
| Marshalltown | Iowa | 43 | 2.4–16.8 kW | 7.0 kW | Alliant Energy |
| Mason City | Iowa | 40 | 3.7–17.6 kW | 7.7 kW | Alliant Energy |
| Iowa City / Washington County area | Iowa | 49 | 4.8–26.6 kW | ≈8 kW | MidAmerican & Alliant |
| Decatur | Illinois | 6 | 8.2–19.8 kW | 16.7 kW | Ameren |
| Peoria area | Illinois | 7 | 6.5–36.1 kW | ≈9.8 kW | Ameren |
| Champaign-Urbana-Mahomet area | Illinois | ≈15 | 6.6–25.4 kW | ≈11 kW | Ameren |
| Springfield | Illinois | 1 | 12.4 kW | 12.4 kW | Municipal (CWLP) |
Figures above are from SolQ’s own completed-installation records (installs with permission-to-operate, active monitoring, or install-complete status), no house numbers or customer names included. Iowa reflects 1,179 completed installs in this dataset and a much longer track record in the state; Illinois reflects 61 completed installs, an honest reflection of a newer market presence, not a limitation we hide. If your town is not listed above, that does not mean we have not worked nearby, it means we would rather tell you what we can verify than pad the number. Every proposal includes a site-specific price based on your actual roof and utility, not a number from this table.
How SolQ Walks You Through Incentives, Step by Step
Confirm your utility
We identify whether you’re Alliant, MidAmerican, Ames, Cedar Falls, ComEd, Ameren, or MidAmerican-Illinois, since incentives and billing rules differ by utility, not just by state.
Check current incentive status
We pull the live Illinois Shines block status, ComEd/Ameren rebate eligibility, or your Iowa property/sales-tax exemption status the same week we design your system, not from a stale figure.
Choose how you pay
We walk through Lease/PPA, loan, and cash side by side, including who claims which credit under each option, so the tradeoffs are clear before you sign anything.
Get a site-specific proposal
Your actual roof, shading, panel count, and financing terms determine your price. Every incentive applicable to your address is applied in writing, in the proposal, not implied verbally.
Install, interconnect, enroll
Our team handles utility interconnection paperwork, and where applicable, REC enrollment through Illinois Shines or your rebate application with ComEd or Ameren.
Lease/PPA vs. Loan vs. Cash in 2026
Because the residential federal credit is gone, how you pay matters more than it used to. Here is the honest comparison. SolQ’s financing partners include LightReach for Lease/PPA agreements and Salal Credit Union for loans, subject to approval; specific contract length and terms (commonly 20 to 25 years for a Lease/PPA) are set out in your individual agreement, not on this page.
| Lease / PPA (third-party owned) | Loan | Cash purchase | |
|---|---|---|---|
| Who owns the system | The financing company | You, immediately | You, immediately |
| Upfront cost | Typically $0 down | Financed, no large upfront cost | Full system cost paid upfront |
| Who can claim a 2026 federal credit | The financing partner, via Section 48E, passed through in your rate | No one; the residential credit (25D) ended for 2026 | No one; the residential credit (25D) ended for 2026 |
| Payment | Fixed or scheduled monthly payment, generally below your prior utility bill | Fixed monthly loan payment | None after purchase |
| Iowa property-tax exemption | Does not apply to you (you don’t own the system) | Applies, since you own the system | Applies, since you own the system |
| Best fit | Homeowners who want savings without owning equipment or losing the credit-equivalent value | Homeowners who want ownership and long-term equity without a full cash outlay | Homeowners who want maximum long-term savings and full ownership |
This is general educational information, not a savings guarantee or a specific quote. Actual payment, term, and eligibility depend on credit approval, your utility, your roof, and current program rules at the time you sign. Confirm final numbers in your written proposal and contract.
Tax Credit & Incentive Questions, Answered
Is there still a 30% federal solar tax credit in 2026?
Not for a system you buy with cash or a loan. The federal Residential Clean Energy Credit (Section 25D) ended for systems placed in service after December 31, 2025, under the One Big Beautiful Bill Act. If you choose a Lease or PPA instead, the financing company that owns the system can claim the separate commercial credit (Section 48E) and pass that value through in your payment. This is general information, not tax advice; confirm your situation with a licensed tax professional.
What happened to net metering in Iowa and Illinois?
Both states have moved away from traditional net metering for new systems. Iowa’s Alliant Energy and MidAmerican customers use Inflow-Outflow billing, which tracks what you draw and export separately. Illinois ended net metering for new ComEd and Ameren customers on January 1, 2025, replacing it with net billing, which credits exports against the supply portion of your bill rather than the full retail rate. Systems already grandfathered under the old rules keep them.
Is Illinois Shines a rebate?
No. Illinois Shines is a 15 to 20-year forward sale of your system’s Renewable Energy Certificates (RECs), managed through the Adjustable Block Program. An Approved Vendor collects that REC value and typically builds it into your project price or financing terms upfront. It is not a check mailed to you, and it is not a state or utility rebate.
How much is the ComEd solar rebate?
ComEd’s Solar Generation Rebate pays $300 per kW of system capacity for new systems under 5,000 kW, requiring a smart inverter, generally paid within about 90 days of activation. A separate Battery Storage Rebate pays $300 per kWh of battery capacity, and requires enrollment in ComEd’s hourly Rate BESH pricing program. These figures can change; we confirm the current amount as part of your proposal.
How much is the Ameren solar rebate?
Ameren Illinois offers a Smart Inverter Rebate of $300 per kW and a Battery Storage Rebate of $300 per kWh. The battery rebate requires enrolling in Peak Time Rewards, Real Time Pricing, or Power Smart Pricing. Accepting the generation rebate can affect a legacy net-metering customer’s grandfathered status, so we review your specific account before recommending it.
Does Iowa still have a state solar tax credit?
No. Iowa’s state income-tax credit for residential solar closed to new applicants in 2022. It is sometimes still marketed as active by sales teams working from outdated information; it is not available for a system installed in 2026.
What Iowa tax exemptions are still available for solar?
Two remain active: a 5-year property-tax exemption on the added home value your system creates, and a sales-tax exemption on qualifying solar equipment (labor is generally still taxable). Both are confirmed for your specific property and equipment list as part of your proposal.
If the federal credit is gone, is there any way to get 30%-equivalent value?
The closest current path is a Lease or PPA. Because the financing company owns the system as a business asset, it can claim the commercial credit (Section 48E) and pass a portion of that value through as a lower monthly payment. It is not identical to receiving 30% back on your own tax return, and the exact value depends on your financing partner’s specific arrangement and your contract terms. Ask your consultant to show this in writing, and confirm treatment with your own tax advisor.
Does the Quad Cities area follow the same Illinois rules as ComEd and Ameren?
Not automatically. Moline, Rock Island, and the surrounding Quad Cities area are served by MidAmerican Energy, a separate utility with its own Illinois-side tariff. We confirm MidAmerican’s current net billing and rebate terms directly rather than assuming the ComEd or Ameren rules described on this page apply there.
How much does solar cost in Iowa or Illinois in 2026?
It depends on your roof, your equipment choice, your financing structure, and which incentives apply at your address, so we do not publish one statewide average. Real SolQ residential systems in Iowa and Illinois have ranged roughly from 2.4 kW to over 26 kW depending on household usage; see the size table above for real examples by area. Your written proposal will show a price specific to your property, not an estimate pulled from a general table.
Related Pages
Find Out What Actually Applies at Your Address
Free consultation, your correct utility identified, and a written proposal that shows exactly which incentives apply and which don’t. No recycled 30% pitch, no guesswork.
Get Your Free EstimateSolQ is an independent solar provider and is not affiliated with, endorsed by, or acting on behalf of the Internal Revenue Service, the State of Iowa, the State of Illinois, the Illinois Power Agency, Illinois Shines, ComEd, Ameren, MidAmerican Energy, Alliant Energy, Ames Electric Services, Cedar Falls Utilities, or any government agency. SolQ is a registered Illinois Shines Designee operating under multiple Approved Vendors; Illinois Shines and the Adjustable Block Program are administered by the Illinois Power Agency’s Program Administrator, not by SolQ. Renewable Energy Certificate (REC) pricing, Illinois Shines block capacity, and utility rebate terms are set by the applicable program administrator or utility and change over time; figures on this page are general information, current as of the date noted at the top of this page, and are confirmed for your specific address as part of every proposal. This page is not tax, legal, or financial advice; consult a licensed tax professional about your specific situation. The federal residential solar tax credit (Section 25D) ended for cash and loan purchases completed after December 31, 2025; a separate credit (Section 48E) may apply to third-party-owned Lease/PPA systems on the timeline described above. Financing offered through third-party partners (LightReach for Lease/PPA, Salal Credit Union for loans); terms subject to partner approval and are not guaranteed. Iowa property and sales tax exemptions are subject to Iowa law and local assessment; confirm current eligibility with your county assessor or tax advisor. No results, savings amount, or payback period is guaranteed. Content verified as of August 2026.