Does the Federal Solar Tax Credit Cover a New Roof?
Going solar is one of the most powerful investments you can make in your home’s future. It lowers your energy bills, increases your property value, and gives you a sense of energy independence. A huge driver behind this solar boom is the Federal Solar Tax Credit, also known as the Investment Tax Credit (ITC), which can significantly reduce the cost of your system.
As homeowners begin this exciting journey, a common and very practical question arises: “If I need a new roof to support my solar panels, can I include the cost of the roof in the tax credit?”
It’s a fantastic question. After all, a solid roof is the foundation of a great solar energy system. Here at Energy Solutions, as Oregon City’s #1 trusted local installer with over 1050 successful projects under our belts, we’ve helped countless homeowners navigate this exact scenario.
The short answer is: it’s complicated, but in many cases, a portion of your roof replacement costs may be eligible.
This guide will break down the nuances, explain the IRS guidelines, and help you understand how to approach this major home upgrade.
Your Guide to the Federal Solar Tax Credit and Roofing Costs

Before we dive into the specifics of roofing, let’s clarify what the Federal Solar Tax Credit is and what it typically covers. The ITC allows you to deduct 30% of the total cost of your solar energy system from your federal taxes. It’s a dollar-for-dollar reduction in the income tax you owe, making it far more valuable than a simple deduction.
So, what is included in the federal solar tax credit under normal circumstances? The credit applies to the total cost of your “solar PV property,” which includes:
- Solar PV panels
- Inverters and microinverters (we proudly use top-tier brands like Enphase)
- Racking and mounting equipment
- Wiring, conduit, and other electrical components
- Energy storage devices (batteries) like the Generac PWRcell, provided they have a capacity of 3 kilowatt-hours (kWh) or greater.
- Labor costs for on-site preparation, assembly, and installation.
- Permitting fees, inspection costs, and developer fees.
Essentially, any expense directly related to the installation and commissioning of the solar energy system itself is covered. The gray area appears when we talk about structural upgrades to your home that are necessary for the system to be installed—like a new roof.
The “Enabling” and “Integral” Rule: What the IRS Says
The key to this entire discussion lies in the language used by the IRS. For a home improvement project to be included in the solar tax credit, its costs must be considered part of the “solar electric property expenditure.” While the roof itself isn’t a solar component, the IRS has allowed for the inclusion of “certain roofing expenditures.”
The core principle revolves around whether the roofing work was “enabling” or “integral” to the installation of the solar system.
Let’s break that down. The IRS rules for solar tax credit and roof eligibility generally hinge on this question: Did you have to replace the roof in order to install the solar panels?
If your existing roof was old, damaged, or structurally incapable of supporting a solar array for its 25+ year lifespan, then a strong argument can be made that the replacement was a necessary and “enabling” expense. Conversely, if you simply wanted a new roof for aesthetic reasons and decided to install solar at the same time, the roof costs would likely not be eligible.
Think of it this way: If an electrician tells you that you need to upgrade your main electrical panel to safely install a new solar system, the cost of that panel upgrade is typically eligible for the ITC because it enables the solar installation. The same logic can be applied to the roof.

How to Calculate the Eligible Portion of Your Roof Replacement
This is the most important part: you cannot claim 100% of your new roof’s cost under the solar tax credit.
The IRS does not allow you to claim the cost of your entire roof, only the portion that directly supports the solar panels. The accepted method is a pro-rata calculation based on the square footage.
Here’s a simplified example:
- Total Roof Cost: Let’s say your full roof replacement costs $25,000.
- Total Roof Area: Your roof is 2,000 square feet.
- Area Covered by Solar Panels: Your new REC solar panels cover 800 square feet of the roof.
- Calculate the Percentage: The solar panels cover 40% of your roof (800 sq ft / 2,000 sq ft = 0.40).
- Determine Eligible Cost: You can apply that percentage to your total roof cost. $25,000 x 40% = $10,000.
- Calculate the Credit: The 30% tax credit applies to that eligible portion. $10,000 x 30% = $3,000.
In this scenario, you could potentially claim an additional $3,000 tax credit thanks to your necessary roof replacement. For homeowners considering both projects, this can make a significant financial difference.
Disclaimer: We are solar experts, not tax professionals. This information is for educational purposes only. You must consult with a qualified tax advisor regarding your specific financial situation before filing.
Navigating the Rules in Oregon
While the ITC is a federal credit, homeowners in our local service areas often wonder how these rules apply to them. From the rainy coast to the valleys, a durable roof is non-negotiable.
For homeowners asking about the solar tax credit for new roof in Oregon, the logic holds true. Our state’s climate means that a roof’s integrity is paramount. When we design a system, we conduct a thorough structural review. If we determine a roof won’t last the life of the solar panels, we advise the homeowner that a replacement is necessary for the long-term success of their investment. This professional assessment is a key piece of documentation supporting your claim.

The Critical Importance of Documentation
If you plan to claim a portion of your roof replacement, meticulous documentation is your best friend. The IRS requires you to have clear proof that the expense was justified.
Here’s what you should keep:
- Itemized Invoices: Your invoices from both the roofer and the solar installer should be clear and detailed. If possible, have the roofer separate the cost for the section of the roof where the panels will be installed.
- Contracts: Keep copies of all signed contracts.
- Professional Assessment: A letter or documented assessment from us, your solar installer, stating that a roof replacement was necessary for the solar installation, can be powerful evidence.
- Photos: Take before-and-after photos of your roof to document its condition prior to replacement.
When it comes to combining roofing and solar tax credits in Oregon, the more detailed your records, the stronger your position will be.
Why a Full-Service Partner Makes All the Difference
Navigating solar incentives, permits, and installation logistics can be overwhelming. Adding a roof replacement to the mix introduces another layer of complexity. This is why choosing the right partner is the most important decision you’ll make.
At Energy Solutions, we are a full-service company. That means we handle everything for you. From the initial design and engineering to securing permits, coordinating with roofers if needed, and completing the installation, our team manages the entire process. We design every system for the fastest payback possible, taking every available incentive into account.
Our experience with over 1050 local projects means we’ve seen it all. We understand how to sequence the projects, what documentation you’ll need, and how to ensure both your new roof and your new solar system provide decades of worry-free performance. We’re not just a company; we’re your neighbors, based right here in Oregon City and proudly serving communities across Oregon.

Ready to Explore Your Solar and Roofing Options?
The Federal Solar Tax Credit is a powerful tool, and understanding how to leverage it fully can save you thousands of dollars. While the rules around roofing can seem complex, the potential savings are well worth the effort.
The only way to get a clear, accurate picture of your project’s costs and potential tax benefits is to speak with an expert. We invite you to book a free, no-obligation consultation with one of our solar specialists. We’ll assess your home, your roof, and your energy needs to provide you with a custom-designed proposal. We can answer your questions and show you exactly how a combined solar and roofing project can work for you.
Don’t guess when it comes to your biggest investment. Let Oregon’s #1 trusted local installer guide you every step of the way. Contact Energy Solutions today.

