I filed my taxes two months ago and got a $7,812 federal tax credit from my solar installation. Not a deduction — a credit. That’s a dollar-for-dollar reduction in what I owed the IRS, and it’s the single biggest financial reason I went solar when I did. But here’s the thing: almost nobody explains how the ITC actually works in plain terms. So let me walk you through exactly what I did.
What the ITC Actually Is (and Isn’t)
The Investment Tax Credit — officially called the Residential Clean Energy Credit — lets you claim 30% of the total cost of your solar installation against your federal income tax liability. In 2025, it’s still 30%. It stays at 30% through 2032, then steps down to 26% in 2033 and 22% in 2034 before expiring for residential systems (as currently written).
A credit is not a deduction. A deduction reduces your taxable income. A credit reduces your actual tax bill. If you owe $10,000 in federal taxes and you have a $7,812 credit, you now owe $2,188. That’s real money back in your pocket.
But here’s the catch I didn’t fully appreciate until I sat down with TurboTax: you can only claim what you actually owe. If your total federal tax liability for the year is $5,000 and your credit is $7,812, you get $5,000 of it this year — and the remaining $2,812 rolls over to the following tax year. It doesn’t expire after one year; you can carry it forward until it’s used up. That rollover provision is what makes this work for most middle-income homeowners.
My Numbers
My system cost $26,040 installed. 30% of that is $7,812. My federal tax liability for 2024 was about $11,400 (I’m an engineer, my wife works part-time — we’re solidly middle-class income). So I claimed the full $7,812 in one shot. My refund was significantly larger than usual this year, which was a nice surprise even though I’d been planning for it.
The math is straightforward: find your total installation cost, multiply by 0.30, that’s your credit. But what counts as “installation cost” is worth understanding.
What Qualifies for the 30% Credit
The credit covers more than just the panels. According to IRS guidance (and confirmed by my tax preparer), eligible costs include:
- Solar panels themselves
- Inverter(s)
- Mounting hardware and racking
- Labor costs for installation
- Wiring and electrical work directly related to the system
- Battery storage — if it’s charged exclusively by solar (important caveat)
- Sales tax on equipment
- Permit fees
Battery storage is an interesting one. If you add a battery that can be charged by the grid as well as solar, the IRS gets complicated. A battery charged solely by solar qualifies at 30%. A hybrid battery (grid + solar) has historically been treated differently, though recent guidance has been more favorable. Ask a tax professional if batteries are in your plan.
What doesn’t qualify: your roof repair or replacement, even if you did it to prepare for solar. I spent $4,200 re-roofing before my panels went in. That $4,200 is not part of the credit calculation. I confirmed this twice because I really wanted it to count.
How to Actually File It: Form 5695
The credit is claimed on IRS Form 5695, specifically Part I (Residential Clean Energy Credit). In TurboTax, it’s handled automatically when you say you installed renewable energy — it walks you through a series of questions and populates the form. In H&R Block, same deal. If you use a CPA, just hand them your installer’s final invoice and tell them you want to claim the residential clean energy credit.
The form asks for your total costs. I used the final invoice from my installer, which itemized everything: panels, inverter, racking, labor, permit fees. The total was $26,040. That’s the number I entered. Form 5695 does the math from there.
One thing to keep: hold onto that installer invoice. The IRS doesn’t require you to attach it to your return, but if you’re ever audited, you’ll want documentation. I scanned mine and saved it in three places.
State Credits: Check Your State
Ohio, where I live, doesn’t have a state income tax credit for solar specifically — though there are property tax exemptions and sales tax exemptions on solar equipment (both of which I used). Other states are much more generous. If you’re in New York, Massachusetts, Maryland, or several other states, you can stack a state credit on top of the federal 30%. Some states are offering 25% on top of the federal 30%. That’s a 55% reduction in your installation cost — at that point, solar is almost a no-brainer financially.
Look up your state’s Database of State Incentives for Renewables and Efficiency (DSIRE) at dsireusa.org. It’s maintained by NC State and it’s the most complete resource I found.
One Thing That Tripped Me Up
I almost missed the fact that you need sufficient tax liability to use the credit. I knew about the rollover provision, but I didn’t think carefully enough about timing. If you’re planning to retire soon, or if your income is going to drop significantly, your tax liability may be lower in future years — which means the rollover drags out longer. I talked to one guy in an online forum who’s been carrying forward a partial credit for three years because his retirement income is low. He’ll get there eventually, but it’s slower than expected.
If you’re planning a major life change — retirement, going part-time, a spouse leaving the workforce — think about whether this year or next year is the better year to install, based on your expected tax liability.
The Bottom Line
The federal ITC is the most straightforward, significant financial incentive in residential solar, and claiming it is genuinely not that complicated. File Form 5695 with your federal return, use your installer invoice as the cost basis, and claim 30% of your total installation cost. If you can’t use it all in one year, it rolls forward.
My $7,812 credit turned a $26,040 system into an effective cost of $18,228, a number that heavily influenced my decision to pay cash rather than finance. Combined with Ohio’s property and sales tax exemptions, my real out-of-pocket was closer to $17,400. That changes the payback math significantly — I’m now looking at a 7.2-year payback instead of over 10. That tracks with what I found when I ran my full solar ROI numbers after 14 months. The ITC is real money, and it’s available through at least 2032. Use it.