The largest federal solar energy government incentive is a tax credit worth 30 percent of what you spend to install a system on your home, and it is available for systems placed in service through the end of 2032. State programs can add renewable energy certificate income, sales and property tax exemptions, and direct rebates on top. Separate federal grant programs help low-income households and rural small businesses that can’t use a tax credit. And in most states, HOA rules and utility interconnection rights are backed by law that protects your ability to go solar in the first place.
The 30 Percent Federal Tax Credit
Under 26 U.S.C. § 25D, homeowners who install solar panels on a residence can claim a federal income tax credit equal to 30 percent of the total cost, including equipment and labor.1Office of the Law Revision Counsel. 26 USC 25D – Residential Clean Energy Credit The 30 percent rate applies to systems placed in service from 2022 through the end of 2032. It then drops to 26 percent for 2033 and 22 percent for 2034, and expires after that. There is no dollar cap, so a $30,000 installation in 2026 produces roughly a $9,000 reduction in your federal income tax.
Eligible equipment includes solar electric panels, solar water heaters that get at least half their energy from the sun, and battery storage with a capacity of at least three kilowatt-hours.1Office of the Law Revision Counsel. 26 USC 25D – Residential Clean Energy Credit The credit also covers labor for onsite preparation, assembly, and installation, plus the wiring or piping needed to connect the system to your home.2Internal Revenue Service. Residential Clean Energy Credit
Who Qualifies
The system must be installed on a home you own and use as a residence. The IRS excludes landlords and property owners who don’t live in the home.2Internal Revenue Service. Residential Clean Energy Credit If you lease your panels from a third-party provider, you don’t qualify, because you don’t own the equipment. The credit does work for both primary and secondary homes, including condominiums, and for both new construction and existing homes.
Roofing is where people get tripped up. Solar shingles and solar roof tiles qualify because they generate electricity. Traditional roofing materials, trusses, or structural supports installed underneath solar panels do not, even if the installer bills them as part of the project.2Internal Revenue Service. Residential Clean Energy Credit If you had to replace your roof before installing panels, that roof cost is not part of your credit calculation.
If you run a home-based business, business use of 20 percent or less still lets you claim the full credit. Above 20 percent, you can only claim the credit on the share of costs allocated to personal use.2Internal Revenue Service. Residential Clean Energy Credit A system used solely for business gets no residential credit at all.
What Happens if the Credit Is Bigger Than Your Tax Bill
The credit is non-refundable. It can reduce your federal income tax to zero, but it won’t generate a refund on its own. If your total tax liability for the year is less than the credit amount, the unused portion carries forward to the next tax year and adds to the credit available then.1Office of the Law Revision Counsel. 26 USC 25D – Residential Clean Energy Credit Someone with a $4,000 annual tax liability claiming a $9,000 credit would use $4,000 in year one and carry $5,000 forward.
How to Claim the Credit
Get itemized invoices from your installer that separate hardware from labor, permitting fees, and any other charges. Ask for the manufacturer’s written certification that the equipment qualifies. The IRS lets you rely on that certification but says you don’t attach it to your return; just keep it with your records.3Internal Revenue Service. Instructions for Form 5695 Record the date the system was placed in service, because that determines which tax year the credit applies to.
Calculate the credit on IRS Form 5695. Enter your total qualified solar electric property costs on Line 1.4Internal Revenue Service. Instructions for Form 5695 The form multiplies your eligible expenses by 30 percent. The final figure transfers to Schedule 3 of Form 1040, Line 5a, where it joins your other nonrefundable credits.5Internal Revenue Service. Schedule 3 (Form 1040) – Additional Credits and Payments
The most common filing mistakes are lumping in non-qualifying costs like roof repairs or entering the wrong placed-in-service date. Getting the invoices right at the start prevents delays later. The IRS generally issues refunds within three weeks of receiving an e-filed return.6Internal Revenue Service. Refunds
State and Local Incentives That Stack on Top
The federal credit is the largest single incentive, but state and local programs can add substantial value. The specifics vary widely, so the practical starting point is the Database of State Incentives for Renewables and Efficiency (DSIRE), which lists programs available at your address. Most fall into three groups.
Solar Renewable Energy Certificates
In states with renewable portfolio standards that include a solar carve-out, utilities have to source a set percentage of their electricity from solar. One way they meet that mandate is by buying Solar Renewable Energy Certificates (SRECs) from homeowners who generate solar power. Each SREC represents one megawatt-hour of solar electricity produced.7US EPA. State Solar Renewable Energy Certificate Markets If you live in a state with an active SREC market, you can sell these certificates for recurring income on top of your bill savings. Prices fluctuate with supply and demand in each state’s market.
Sales and Property Tax Exemptions
Roughly half the states exempt solar equipment from state sales tax, which can save several hundred to over a thousand dollars on a typical residential system. More than 30 states also offer some form of property tax exemption, so the added home value from your panels doesn’t increase your property tax assessment. These exemptions range from full exclusion of the system’s value to partial exemptions, and they usually apply automatically once the system is installed.
Local Rebates
Some states, municipalities, and utilities offer direct cash rebates that reduce your upfront cost. These are typically funded through utility surcharges or legislative appropriations, and they often require you to apply before installation begins to reserve a spot. Funding is limited, so programs open and close with budget cycles. Check your state energy office and local utility website for currently available rebates and their deadlines.
Net Metering and Grid Connection
About 38 states plus Washington, D.C., have net metering policies or similar compensation rules for residential solar. When your panels produce more electricity than you’re using, the excess flows back to the grid and your utility credits your account. You draw on those credits when your panels aren’t producing enough, so you effectively use the grid as a battery and pay only for the net electricity you consume.
Public utility commissions in each state set the specific rules. In some states, credits roll over month to month at the full retail rate. Others use a lower rate for exported power or expire credits annually. A handful of states have moved away from traditional net metering entirely, replacing it with compensation structures that typically pay less than the full retail rate for exported electricity.
Before your system goes live, you need an interconnection agreement with your utility. That is a formal contract covering the technical requirements for connecting to the grid, including automatic shut-off so your system stops sending power during outages and doesn’t endanger utility workers on downed lines. Your installer usually handles the interconnection application, but utility approval timelines vary and can add weeks to the schedule.
HOA Rules and Solar Rights
If you live in a neighborhood with a homeowners association, you may worry about deed restrictions that ban rooftop equipment or require architectural approval. About 38 states have solar access or solar rights laws that limit the ability of HOAs and local zoning boards to prohibit or unreasonably restrict solar panel installation. Specifics differ, but the general principle is the same: an HOA can impose reasonable aesthetic requirements, such as where on the roof panels go, but it cannot flat-out ban solar or impose rules that would significantly increase cost or reduce system performance.
Solar easements are a separate tool. They’re voluntary legal agreements that protect your access to sunlight by preventing neighbors from building structures or planting trees that would shade your panels. These easements are typically recorded with the property title and transfer with the home when it’s sold. Some local governments automatically create a solar easement when you receive a permit to install a solar energy system, though this varies by jurisdiction.
Help if You Owe Little Federal Tax
Because Section 25D is a nonrefundable credit, it is most useful to households that owe enough income tax to absorb it (even with carryforward). For lower-income households, two federal grant programs address the gap.
Weatherization Assistance Program
The Department of Energy’s Weatherization Assistance Program (WAP) provides free energy efficiency upgrades to qualifying households. An energy auditor visits your home, assesses where energy is wasted, and recommends improvements, and the program pays for the work through local WAP providers. Eligibility is generally limited to households earning at or below 200 percent of the federal poverty guidelines, or those receiving Supplemental Security Income. States can also use alternative income criteria based on 60 percent of state median income.8Department of Energy. How to Apply for Weatherization Assistance Priority goes to elderly residents, people with disabilities, and families with children.
Low Income Home Energy Assistance Program
LIHEAP helps families manage immediate energy costs like heating and cooling bills, and in some areas a portion of funds is directed toward efficiency upgrades or small-scale solar installations.9Administration for Children and Families. Low Income Home Energy Assistance Program Because these are direct grants rather than tax credits, they’re accessible to people who owe little or no income tax. Local community action agencies handle applications and determine eligibility based on household income and size.
USDA Grants for Farms and Rural Small Businesses
The Rural Energy for America Program (REAP) offers grants to agricultural producers and small businesses in rural areas for renewable energy systems, including solar. Grants cover up to 25 percent of total project costs for most applicants, with a higher 50 percent share available for projects in designated energy communities, zero-emission systems, or Tribal business entities. Individual grants range from $2,500 to $1 million, and applicants can combine a grant with a USDA loan guarantee to cover up to 75 percent of costs.10USDA Rural Development. Rural Energy for America Program Renewable Energy Systems and Energy Efficiency Improvement Guaranteed Loans and Grants Projects must be in areas with populations of 50,000 or less, though agricultural producers can install systems in non-rural locations if tied to their farming operation.
Rental Property and Business Systems Use a Different Credit
If you own rental property or a business, you can’t use the residential credit under Section 25D. Instead, 26 U.S.C. § 48E provides an investment tax credit for clean electricity-generating property, including solar, placed in service beginning in 2025. Systems with a maximum output under one megawatt qualify for a 30 percent credit rate without needing to meet prevailing wage and apprenticeship requirements. Larger systems start at a 6 percent base rate and reach 30 percent only if those labor requirements are satisfied. For solar specifically, the Section 48E credit is available for property placed in service through the end of 2027.11Office of the Law Revision Counsel. 26 USC 48E – Clean Electricity Investment Credit
Avoiding Solar Scams
The growth of solar incentives has attracted bad actors. The Federal Trade Commission warns that offers for “free” or “no cost” solar panels are scams and that companies frequently overpromise savings from tax credits and rebates. The FTC has also taken action against companies using Property Assessed Clean Energy (PACE) loans to trap homeowners with liens that made it hard to sell their homes. Salespeople falsely claiming to represent the government or your utility violate the FTC’s Impersonation Rule.12Federal Trade Commission. Don’t Waste Your Energy on a Solar Scam
The Department of Energy recommends working with installers certified through the North American Board of Certified Energy Practitioners (NABCEP) and reading federal guidance on solar leases, power purchase agreements, and subscriptions before signing anything.13Department of Energy. Homeowner’s Guide to Solar If a company misrepresents itself or its products, you can report it to the FTC at ReportFraud.FTC.gov or file a complaint about financial products with the Consumer Financial Protection Bureau.