State solar incentives are the tax credits, cash rebates, property and sales tax exemptions, performance payments, and net metering credits that state governments and utilities offer to lower the cost of installing residential solar. With the federal Residential Clean Energy Credit expired for expenditures made after December 31, 2025, these state programs are now the main source of government savings for homeowners going solar in 2026.1Office of the Law Revision Counsel. 26 USC 25D – Residential Clean Energy Credit What you can claim, how much you get, and where you apply all depend on the state you live in, but the categories of help and the application steps follow a predictable pattern.
State Income Tax Credits
Roughly a dozen states offer a residential solar income tax credit. The credit is a percentage of what you spent on the system, capped at a dollar figure the state sets. Some states allow 25% of system costs with an annual cap of a few thousand dollars; others use lower percentages or higher lifetime limits. You install the system, keep your receipts, and claim the credit on your state income tax return.
Whether the credit is refundable matters. Most state solar credits are nonrefundable, meaning they can reduce your state tax bill to zero but no lower; if the credit exceeds what you owe, you don’t get a check for the difference. A refundable credit pays you the excess as a direct refund, which makes the incentive useful regardless of income. Refundable versions are less common.
If your credit is nonrefundable and larger than your tax bill, many states let you carry the unused balance forward, typically for five to ten years. That way a large credit isn’t wasted when your annual liability is small. Check your state’s specific carryforward window before assuming you’ll eventually use the whole amount.
Cash Rebates and Performance Payments
State agencies and participating utilities often pay cash rebates that directly reduce your purchase price. Unlike a tax credit, a rebate usually arrives as a check or electronic transfer within weeks of your system passing inspection. Payments are commonly structured on a per-watt basis, with a program cap.
Many rebate programs use a declining-block structure. Early participants get the highest per-watt payment; as the program hits capacity milestones, the rate steps down for the next group of applicants. Waiting can cost real money, and some programs have run through their funding entirely and placed new applicants on waitlists until more money opens up.
Performance-based incentives pay you based on the electricity your panels actually produce rather than the upfront cost of the system. You receive a set rate for every kilowatt-hour generated, tracked through your utility meter or a dedicated production meter. Payments typically continue for a fixed period, often 5 to 15 years. Because the payout depends on actual output, panel orientation, shading, and maintenance affect what you earn.
Income-Qualified Programs
A growing number of states run enhanced programs for low-to-moderate income households, generally with eligibility set at 80% of Area Median Income or 200% of the Federal Poverty Level. Some cover the full cost of installation and transfer ownership of the system to the homeowner at no charge; others pay substantially higher rebates than the standard track. Funding cycles are tight, so these programs sometimes pause enrollment and reopen when new money arrives.
Property Tax and Sales Tax Exemptions
Solar panels raise your home’s market value, which would normally raise your property tax bill. About 36 states have property tax exemptions that keep the added value from your solar system out of your assessed value. Some exempt the full added value indefinitely; others cap the exemption at a percentage of the system’s original cost or limit it to a set number of years.
Separately, about 25 states exempt solar equipment from state sales tax. That removes the 4% to 8% state sales tax from the price of panels, inverters, and related hardware. On a system that costs $20,000 or more, that’s over a thousand dollars saved at the point of sale. Some states apply the exemption automatically; others require your installer to document it on the invoice. One boundary to know: in some states the state exemption doesn’t extend to locally imposed sales taxes, so your county or city may still charge its own tax.
Net Metering and Interconnection
Net metering, or net billing in newer programs, is how you get credit for surplus electricity your panels send to the grid. When your system produces more than your home uses, the excess flows to the grid and your utility credits your account. You draw against those credits when your panels aren’t producing, like at night. Older net metering programs credit that power at the full retail rate. Newer net billing programs use a lower rate based on the estimated grid value of the energy.
Before your system can participate in any net metering or billing program, you need an interconnection agreement with your utility. That’s the legal and technical permission to connect to the grid. The process involves submitting an application with your system’s specifications, waiting for engineering review, and receiving formal permission to operate. Some utilities charge an application fee. Timelines vary, but one rule is universal: do not turn on your system before you have written permission to operate. Running a grid-tied system without an approved interconnection agreement can trigger penalties or cost you incentive eligibility.2U.S. Environmental Protection Agency. Solar Interconnection Standards and Policies
Solar Renewable Energy Certificates
Solar Renewable Energy Certificates (SRECs) represent the environmental attributes of the electricity your system produces. For every megawatt-hour your panels generate, one SREC is created and registered in an electronic tracking system. You can sell those certificates to utilities that need them to meet state renewable energy mandates. About nine states operate dedicated SREC markets. Prices swing widely with state supply and demand, with recent values ranging from under $5 to over $300 per certificate. Where the market is active, SREC revenue can meaningfully shorten your payback period, but you have to register your system in the state platform and either manage or broker the sales.
Who Qualifies
Most state residential programs require you to own the property and live there as your primary residence. Landlords and investors who own rental property they don’t personally occupy are usually excluded from residential programs, though some states run separate commercial incentives for investment property.3Internal Revenue Service. Residential Clean Energy Credit Second homes and vacation properties sometimes qualify if you live there part-time and don’t rent them out, but this varies by state and program.
If you use part of your home for business, your incentive may be reduced in proportion. A home office that occupies 15% of your square footage might reduce the incentive by that same 15% in states that mirror the federal rules on mixed-use property. Properties used entirely for business typically don’t qualify for residential programs at all.
Some programs set installer requirements too. NABCEP certification is a respected voluntary industry credential, but most state programs don’t require it. States are more likely to require that your installer hold a valid state electrical or general contractor license. Check the application materials for any specific installer qualifications before you sign a contract, so you don’t discover after installation that your contractor wasn’t eligible.
How State Incentives Affect Your Federal Taxes
The federal Residential Clean Energy Credit under 26 U.S.C. ยง 25D expired for expenditures made after December 31, 2025.1Office of the Law Revision Counsel. 26 USC 25D – Residential Clean Energy Credit If you installed your system before that deadline and didn’t use the full credit on your 2025 return, you can carry the unused portion forward to your 2026 filing using IRS Form 5695.4Internal Revenue Service. Instructions for Form 5695 (2025) For systems installed in 2026 or later, no federal residential solar tax credit is currently available.
State incentives can still have federal tax consequences. The IRS treats state solar incentives differently depending on how they’re structured. A state incentive that qualifies as a purchase-price adjustment or rebate under federal tax law is subtracted from your qualified costs. A state incentive that doesn’t meet the federal definition of a rebate may need to be included in your gross income on your federal return.3Internal Revenue Service. Residential Clean Energy Credit Many states label their programs as “rebates” even when they don’t meet the IRS definition, so the label doesn’t settle the question. If you receive a substantial state incentive, ask your tax preparer whether it creates federal taxable income.
Utility subsidies work differently. If your utility pays part of your installation cost, whether directly to you or to your contractor, the IRS treats that as a reduction in your qualified expenses.3Internal Revenue Service. Residential Clean Energy Credit Net metering credits for electricity you sell back to the grid are not treated as subsidies and don’t affect your cost basis.
Documents You Need to Apply
Gathering the paperwork before you start avoids the most common cause of delays. Exact requirements vary by program, but most state incentive applications ask for the same core documents:
- A signed installation contract showing total system cost, equipment specifications, and contractor information.
- Equipment details, including serial numbers for each panel and inverter and the manufacturer and model information, usually listed on the installation completion certificate.
- System size in kilowatts (from your contract) and the estimated annual production in kilowatt-hours (from your installer’s proposal).
- Proof of property ownership, such as a deed, recent property tax statement, or title document.
- Your utility account number, which ties the incentive to the correct meter.
- The interconnection agreement showing your utility has approved the system for grid connection.
Every data point on the application should match your installation records exactly. A system listed as 7.2 kW on the application but 7.6 kW on the contract is the kind of mismatch that triggers review delays. Check that address, specifications, and cost figures are consistent across every document before you submit.
Submitting the Application
Most state energy offices now accept applications through an online portal where you create an account, enter system and property details, and upload your supporting documents. Some programs still take paper applications by mail, but online submissions typically process faster. You should receive an automated confirmation with a tracking number within a few business days; if you don’t, follow up with the program administrator rather than assuming it went through.
Don’t sit on a completed installation. Many programs set strict submission deadlines measured from the date your system receives permission to operate, sometimes as short as 30 to 90 days. Miss the window and you can be disqualified entirely, no matter how well you otherwise qualify. Programs funded through a fixed budget also operate first-come, first-served, so a complete early application beats a perfect late one after funding runs out.
What Happens After You Apply
Administrative review typically takes four to eight weeks, longer during high-volume periods or if your application is incomplete. The program administrator verifies your documents, confirms the system matches program requirements, and may contact your utility to confirm interconnection. If something is missing or inconsistent, you’ll usually get a request for more information; respond quickly, because some programs cancel applications that sit past a set correction window.
Once approved, you get your benefit in whatever form the program specifies: a check or electronic transfer for a rebate, a tax certificate or credit authorization for a state tax credit, or enrollment in a payment schedule for a performance-based incentive. Keep every approval letter, payment confirmation, and piece of correspondence in your tax files. Your state Department of Revenue can request documentation years later during an audit, and a complete paper trail makes that painless.
If you sell your home before a performance-based incentive contract or SREC agreement has run its full term, those benefits don’t automatically transfer to the buyer. You need to work with the program administrator or contract holder to initiate a formal transfer, and the new owner typically has to agree to the remaining terms. Start that process early so it doesn’t delay closing or cost either party the remaining incentive value.