The Federal Solar Tax Credit in 2026: How to Actually Claim It

What the 30% credit actually is

The thing people call "the solar tax credit" has a real name. The IRS calls it the Residential Clean Energy Credit, and it is worth 30% of the eligible cost of qualifying clean energy property you install at your home (IRS). Solar electric panels are the headline example, but the same credit reaches solar water heaters, small wind, geothermal heat pumps, fuel cells, and, as of recent years, battery storage. The IRS states there is no annual or lifetime dollar cap on the credit for most of this property, with fuel cells being the exception (IRS).

Here is the part that trips people up. A tax credit is not a discount at the point of sale, and it is not a rebate check that shows up in the mail. It is a reduction in the federal income tax you owe for the year. If your system's eligible cost is 24,000 dollars, 30% of that is 7,200 dollars, and that 7,200 is subtracted from your tax bill when you file. The money does not move when you sign the install contract. It moves when you do your taxes. That timing gap is the single biggest source of confusion, and most of this guide is about closing it.

One note before we go further. I am walking through how the credit works in plain terms, not giving you tax advice for your specific return. Your income, your other credits, and your filing status all matter, so confirm the details with a tax professional and with the IRS before you rely on any number here.

Who can claim it, and on which home

The credit is for people who own and live in the home where the system goes. The IRS describes it as applying to qualified clean energy property installed at a residence you use in the United States (IRS). It does not have to be your main home in every case, and the IRS allows the credit for certain second homes you live in part of the year, as long as you are not renting the place out to others. A landlord who does not live in the property generally cannot claim it for a rental. If you split time between two homes you own and live in, more than one can qualify.

You also need to be buying the system, not leasing it. When you sign a lease or a power purchase agreement, the company that owns the panels is the one that claims the credit, not you (DOE). That is a fair trade in some cases, because the leasing company often prices the deal with the credit already baked in, but you should know who gets it. If the system is yours, through cash or a loan, the credit is yours to claim. The Department of Energy's homeowner guide to the residential solar credit lays out these ownership rules in detail and is worth reading start to finish before you file (DOE guide).

What counts toward the 30%

The 30% applies to your eligible cost, and eligible cost is more than just the panels on the roof. The IRS allows the hardware plus the labor to put it in. That means the solar panels, the inverters, the mounting equipment, and the balance-of-system wiring, and it also means the labor for onsite preparation, assembly, and original installation, along with the wiring and piping to connect the system to your home (IRS). Permit fees and inspection costs that are part of the installation generally travel with it. Sales tax on the eligible equipment typically counts too.

What does not count is the gray area people guess at. A new roof is the classic example. Replacing your shingles so the structure can hold panels is a home improvement, and traditional roofing materials and structural components generally do not qualify for this credit even when you do them for the sake of the solar (ENERGY STAR). The table below sorts the common line items on a solar invoice into what the IRS treats as eligible and what it does not.

The honest answer on the edge cases is that your installer's invoice and the IRS page decide it, not a blog table. Ask your installer to itemize, and keep the lines that match the IRS definition of qualified property and installation labor (IRS).

The battery question: does storage qualify

This is the question I get most, so here is the direct answer. Battery storage can qualify for the Residential Clean Energy Credit on its own, and the IRS points to a capacity threshold of at least 3 kilowatt-hours for battery storage technology (IRS). Nearly every home battery sold for solar pairing is far above 3 kWh, so in practice a typical residential battery clears that bar comfortably. The credit for storage is not tied to charging the battery only from solar either, under the current rules, which is a change from older versions of the law (ENERGY STAR).

What this means for the homeowner in our scenario, the one who paid for panels and a battery together, is that both the panels and the battery feed the same 30% calculation. You are not running two separate credits. You add the eligible cost of the solar to the eligible cost of the qualifying battery, and 30% of the combined number is your credit, subject to the IRS rules for the year. If you added a battery to an existing solar array in a later year, the battery can be its own qualifying expense in the year it was installed. The DOE guide and the ENERGY STAR solar page both track how storage fits the credit, and both are worth a look if your project includes a battery (ENERGY STAR).

The IRS describes the Residential Clean Energy Credit as equal to 30% of the cost of new, qualified clean energy property installed at a home in the United States, including solar electric panels and qualifying battery storage, with no annual or lifetime dollar limit for most of that property.

IRS, Residential Clean Energy Credit (paraphrased)

Adding up your basis, step by step

Your basis is the number the 30% is applied to, so getting it right is the whole game. Start with the total you paid for the eligible system, hardware and installation labor together. Take the homeowner in our scenario. Say the solar portion cost 22,000 dollars installed and the battery added 9,000 dollars, for 31,000 in eligible cost. At 30%, that is a 9,300 dollar credit, assuming everything on the invoice qualifies and the rules for the year match (IRS).

Now the adjustment people forget. If you received a rebate from your utility or a subsidy that directly reduced what you paid for the system, that rebate generally comes off your cost before you figure the credit, because you only get the credit on what you actually spent (DOE guide). A state tax credit is treated differently from a cash rebate, and the interaction gets technical, which is exactly the kind of thing to run past a tax professional. A separate performance payment or a renewable energy certificate sale may also change the math. The point is that your basis is what you paid out of pocket for qualifying property, after any direct subsidy that lowered the price, not the sticker number on the first page of the contract.

Keep the arithmetic simple and documented. Eligible hardware, plus eligible labor, minus any direct rebate or subsidy, equals your basis. Thirty percent of that basis is the credit you carry to the form. Write it down the way you would want to explain it to the IRS, because if you are ever asked, that is exactly what you will do.

Nonrefundable, carryforward, and no refund

This is the section that saves people from disappointment. The Residential Clean Energy Credit is nonrefundable. The IRS is explicit that it can reduce the tax you owe to zero, but it will not pay you more than your tax liability as a direct refund of the credit itself (IRS). If your 9,300 dollar credit is larger than the federal income tax you owe this year, you do not lose the leftover. The IRS allows you to carry the unused amount forward to reduce your tax in a future year (IRS).

Work through what that means with a number. Say your credit is 9,300 dollars and your federal tax liability for the year lands at 6,000. The credit wipes out that 6,000, taking your tax to zero, and the remaining 3,300 carries to the next year, where it can offset tax again. You are not getting a 3,300 dollar check. You are banking the credit until you have enough liability to absorb it. People who hear "30% back" and picture a deposit hitting their account in April are set up to be let down, so it helps to say it plainly: this lowers taxes you owe, over one or more years, and it does not create a refund on its own (ENERGY STAR).

There is a wrinkle worth knowing. Because the credit interacts with your actual liability, a year with unusually low income can leave more credit to carry forward, while a year with a large tax bill may let you use all of it at once. How many years you can carry it, and the exact mechanics, are set by the IRS, so confirm the carryforward rules for your year on the IRS page rather than assuming (IRS).

The form you file: IRS Form 5695

The credit is claimed on IRS Form 5695, Residential Energy Credits, which you file with your federal income tax return for the year the system was placed in service (IRS). Placed in service generally means the year the installation was finished and ready to use, not the year you signed the contract or made a deposit. A system you paid a deposit on in December but that was switched on in January is usually a credit for the second year. This matters when a project straddles a year boundary, which many do.

On the form, you enter your qualified costs for the clean energy property, the form walks you through the 30% calculation, and it carries the result to your main return where it offsets your tax. The same form handles the carryforward, so if you used part of the credit last year, this is where the leftover comes back in. If you use tax software, it will ask about residential energy improvements and generate Form 5695 for you, but you still need your cost numbers and your documentation ready. EnergySage's walkthrough of the credit lines up the steps in homeowner language if you want a second description alongside the IRS instructions (EnergySage).

A homeowner's filing walkthrough

Let me put it all together for the homeowner who paid for solar and a battery. The install finished in June. Over the year they gathered the signed contract, the final paid invoice with line items, and the proof of payment. At tax time, they added the eligible solar cost and the eligible battery cost, subtracted the one utility rebate they received, and landed on their basis. They took 30% of it. That figure went onto Form 5695 (IRS).

The form compared the credit to their tax liability for the year. Their liability covered most but not all of the credit, so the form applied what it could and set the rest to carry to next year. The credit flowed to their return and lowered the federal tax they owed. They kept a copy of the form, the invoice, and their basis math in the same folder as the return. That folder is the thing you reach for if the IRS ever asks a question, and it is the thing most people wish they had built before they needed it. None of this required a special filing or an early submission. It happened on the normal return, in the normal season, for the year the system went live (EnergySage).

Documents to keep for filing

The credit is only as strong as your paperwork. If you keep these items from the start, the filing is quick and a later question is easy to answer. Pull this folder together while the project is fresh, not the night before taxes are due.

• The signed installation contract showing the full scope of the solar and battery work.
• The final paid invoice with line items separating eligible hardware and labor from anything that does not qualify.
• Proof of payment, such as bank records, loan documents, or receipts for the amount you actually paid.
• The date the system was placed in service, meaning when the installation was finished and ready to use.
• Any utility rebate or subsidy paperwork, since a direct rebate generally reduces your basis before the 30% is figured.
• Battery specifications showing capacity, so you can confirm the storage meets the IRS threshold of at least 3 kWh.
• A copy of the completed IRS Form 5695 and your filed return, kept together for your records.
• Your own written basis calculation, so you can reproduce the number you claimed if asked.

The IRS and ENERGY STAR pages both tell you to keep records that support the costs you claim, so treat this folder as part of the install, not an afterthought (ENERGY STAR).

Tax-credit filing mistakes that cost people

Most problems with this credit are avoidable, and they cluster around a handful of errors. These are the ones that come up again and again.

• Treating it as an instant discount. The credit shows up when you file, not when you buy. Budgeting as if the 30% lands at purchase can leave you short on cash flow (IRS).
• Expecting a refund larger than your tax. It is nonrefundable. If your liability is small, you use the credit over more than one year through carryforward, and you do not get the excess as cash (IRS).
• Putting the new roof in the basis. Structural roof work and traditional roofing generally do not qualify, even when you do it to host the panels (ENERGY STAR).
• Claiming a leased system. If you lease or signed a power purchase agreement, the company that owns the equipment claims the credit, not you (DOE).
• Using the wrong year. The credit belongs to the year the system was placed in service. A project that finished in January is not a December credit (IRS).
• Forgetting to subtract a rebate. A direct utility rebate generally lowers your basis before the 30% is applied, so claiming the full sticker price overstates the credit (DOE guide).
• Keeping no records. Without the itemized invoice and proof of payment, you have nothing to stand on if the costs are ever questioned (ENERGY STAR).

Confirm the current rules before you count on a number

I have stated the credit at 30% of eligible cost throughout, because that is how the IRS describes it, and I have attributed it to the IRS each time for a reason. Tax law changes, and the rate, the eligible property, and the years a credit applies are all things the IRS can and does update. Rather than take any figure in a blog post, including this one, as settled for your tax year, go to the IRS Residential Clean Energy Credit page and confirm the current percentage and the applicable year for yourself (IRS). The ENERGY STAR federal tax credits hub is a second official source that tracks what qualifies and keeps it current (ENERGY STAR).

I am saying this clearly because the cost of getting it wrong is real. If you plan a purchase around a credit that does not apply the way you assumed, the gap comes out of your pocket. A few minutes on the IRS page, plus a conversation with a tax professional who knows your return, protects the whole plan. This guide explains the mechanics. The official pages carry the numbers you file on, and they win any time they disagree with something you read here.

Seeing your net cost before you buy

Here is the practical problem all of this creates. You are trying to decide whether to buy, and the headline price on a quote is the gross cost, before the credit. The number you actually care about is what the system costs you after the 30% comes back. Most homeowners end up doing that subtraction in their head on a napkin, which is how the confusion between an instant discount and a filed credit starts in the first place.

That is the gap Enact's free homeowner proposal is built to close. Instead of leaving you to estimate the credit yourself, it shows your net cost after the 30% credit on your real numbers, so the gross price and the after-credit price sit side by side for your address and your system (Enact for homeowners). You can see how a battery changes both the eligible cost and the after-credit total, which matters for the exact scenario in this guide, a homeowner weighing solar plus storage. Enact's residential solar page walks through how a home system is sized and priced before you ever talk to a salesperson (Enact residential solar).

The credit itself still runs through the IRS and your tax return, on Form 5695, in the year your system goes live, and you should still confirm the current rules on the IRS page and with a tax professional (IRS). What a proposal with the credit built in gives you is the honest after-credit number up front, so the decision you make today matches the bill you file next spring.

Frequently asked questions

How does the solar tax credit work?

The IRS Residential Clean Energy Credit equals 30% of the eligible cost of a qualifying home solar system, and you claim it on Form 5695 with your federal return for the year the system was placed in service (IRS). It reduces the federal tax you owe rather than acting as a discount at purchase, so the benefit arrives at tax time (EnergySage).

Can I claim the solar tax credit with no tax liability?

Not as a cash payment. The credit is nonrefundable, so it only reduces tax you owe, and if you owe nothing it produces no refund by itself (IRS). If your credit is larger than your liability, the IRS lets you carry the unused amount forward to a future year (IRS).

Does a battery qualify for the solar tax credit?

Yes, qualifying battery storage can count. The IRS points to a capacity of at least 3 kilowatt-hours for battery storage technology, which nearly every home battery exceeds (IRS). A solar-plus-battery project generally adds both eligible costs together before the 30% is applied (ENERGY STAR).

What form do I use to claim the federal solar tax credit?

You use IRS Form 5695, Residential Energy Credits, filed with your federal income tax return for the year the system was placed in service (IRS). The form handles the 30% calculation and the carryforward of any unused credit, and a homeowner walkthrough can help you line up the costs (EnergySage).

Does a new roof count toward the solar tax credit?

Generally no. Traditional roofing materials and structural components do not qualify, even when you replace a roof so it can hold the panels (ENERGY STAR). The eligible cost is the solar equipment and the labor to install it, so ask your installer to itemize those lines separately (IRS).

Is the solar tax credit still 30% in 2026?

The IRS describes the credit as 30% of eligible cost, but tax law changes, so confirm the current rate and the applicable year on the IRS page before you rely on it (IRS). The ENERGY STAR federal tax credits hub is a second official source that keeps the eligibility details current (ENERGY STAR).

Sources

1. IRS - Residential Clean Energy Credit
2. ENERGY STAR - Solar Energy Systems Tax Credit
3. ENERGY STAR - Federal Tax Credits
4. DOE - Homeowner's Guide to the Federal Tax Credit (PDF)
5. EnergySage - Federal Solar Tax Credit Explained
6. DOE - Homeowner's Guide to Going Solar
7. EnergySage - Solar Panel Cost
8. Enact - Solar for homeowners
9. Enact - Residential solar