The Residential Clean Energy Credit — commonly called the federal solar tax credit or Investment Tax Credit (ITC) — was worth 30% of total solar installation cost, with no dollar cap, for qualifying spending through the end of 2025. On a $25,000 system, that was a $7,500 credit directly off the federal tax bill. It was the single largest financial incentive for going solar in the United States while it lasted.
Here's how it worked for anyone who installed before the cutoff, and what it means if you're evaluating solar now.
What Was the Federal Solar Tax Credit?
The ITC was established under the Energy Policy Act of 2005 and extended multiple times, most recently by the Inflation Reduction Act (IRA) of 2022, which held the residential rate at 30% through the end of 2025:
| Tax Year | Residential Credit Rate |
|---|---|
| 2022–2025 (spending through 2025-12-31) | 30% |
| 2026 and later | 0% — credit ended for residential systems |
If your system was placed in service on or before December 31, 2025, the 30% rate applied to that spending. Spending on residential systems placed in service in 2026 does not qualify for this credit.
How Much Was the Credit Worth (2022–2025 Installs)?
For qualifying spending through 2025-12-31, the credit equaled 30% of total qualified solar expenses:
2025 Historical Example — Not Valid for 2026 Installs
- System cost (panels, inverter, labor, permits): $28,000
- Battery storage (if included): +$8,000
- Total qualified costs: $36,000
- Federal tax credit (30%): $10,800
- Net cost after credit: $25,200
Battery storage (e.g., a home battery) added to a solar installation also qualified for the 30% credit under this program, even if purchased separately, as long as it was charged primarily by solar. None of this applies to a system placed in service in 2026 or later.
Who Qualified (While the Credit Was Active)?
To claim the credit for a qualifying 2022–2025 installation, a taxpayer had to meet all of the following:
- Own the solar system. Leased systems or PPAs do not qualify — the leasing company claims the credit instead. You must purchase the system outright or via a solar loan.
- It must be a new installation. Used solar equipment does not qualify.
- It's your primary or secondary residence. The credit applies to your main home or a second home (vacation property). It does not apply to rental property you don't live in.
- You have federal tax liability. The credit is nonrefundable — it reduces your tax bill to zero but won't generate a refund beyond that. However, it can be carried forward to future years.
- System is placed in service during the tax year. "Placed in service" means operational and inspected, not just purchased or deposited on.
What Costs Were Covered?
For qualifying installations, the IRS covered a broad range of costs under the credit:
- Solar panels (photovoltaic modules)
- Inverters (string, micro, or power optimizers)
- Mounting hardware and racking
- Wiring and electrical work
- Labor costs for installation
- Permit fees and inspection fees
- Battery storage (if charged primarily by solar)
- Sales tax on equipment
What's not covered: roof repairs done separately from the solar installation, extended warranties, financing charges, or utility interconnection fees paid to the grid operator.
How Was the Credit Claimed?
For a qualifying 2022–2025 installation, the credit was claimed on the federal income tax return using IRS Form 5695 (Residential Energy Credits) for the tax year the system was placed in service, with the credit amount carried to Schedule 3 and then Form 1040. If you installed in that window and haven't yet claimed it, confirm current filing details directly on IRS Form 5695 or with a tax professional — instructions can change and this article is not tax advice.
Tax rules are complex and this is historical information, not tax advice. Work with a CPA or tax professional for your specific situation.
What About State, Provincial, or Utility Rebates?
Some states, provinces, and utilities run their own solar rebates or tax credits alongside — or instead of — federal programs. These vary widely, change frequently, and are not tracked as a fixed number on this site: our calculator only applies an incentive amount you confirm is currently active, rather than assuming a state number that may be outdated by the time you read this. Check your state/provincial energy office, your utility, or the DSIRE database (US) for what is currently available where you live.
Frequently Asked Questions
Was the solar tax credit a refund or a deduction?
It was a credit — it reduced tax liability dollar-for-dollar, which is more valuable than a deduction. A $7,500 credit lowered a filer's tax bill by $7,500, regardless of tax bracket.
What if a filer didn't owe enough in taxes to use the full credit?
The credit was nonrefundable: if it exceeded tax liability in the year claimed, the excess wasn't paid out as a refund, but IRS guidance allowed carrying the unused portion forward to a future tax year. Confirm current carryforward rules directly with the IRS or a tax professional — this article does not track that ongoing.
Did the credit apply to a second home or vacation home?
For qualifying 2022–2025 installations, yes, as long as it was used as a personal residence (not a rental property).
Did a home battery qualify for the federal tax credit?
Under the rules as they applied through 2025, standalone battery storage with a capacity of 3 kWh or more could qualify even without solar. As with the rest of this credit, that no longer applies to systems placed in service in 2026 or later.
My installer offered to do the paperwork for me. Should I let them?
Be cautious. Installers can provide the documentation you need (final invoice, PTO letter), but tax filing is your responsibility. Use a licensed CPA or tax preparer who understands energy credits.