The federal solar tax credit expired. Here's the truth.
A lot of solar websites still advertise a 30% federal credit. For 2026 homeowner purchases, that credit is gone. Here's exactly what happened and what it means for your numbers.
This is the page most solar sites won't show you clearly, because it makes solar look slightly less free than their old marketing claimed. But you deserve the truth, so here it is plainly.
What changed
The federal residential solar tax credit — Section 25D, worth 30% of system cost — expired on December 31, 2025, eliminated under the One Big Beautiful Bill Act signed July 4, 2025. Homeowners who purchase a solar system with cash or a loan in 2026 receive $0 in federal tax credit. Congress has not renewed it.
Outdated pages and sales materials across the internet still fold a 30% federal discount into their pricing. For a 2026 cash or loan purchase, that's simply incorrect, and it makes the real out-of-pocket look thousands of dollars lower than it is. We'd rather you hear it straight.
The one exception: leases and PPAs
There's a narrow path where federal credit value still flows. Third-party-owned systems — solar leases and Power Purchase Agreements (PPAs) — can still claim the commercial investment tax credit (Section 48E) for projects beginning construction before mid-2026, and the owner may pass some of that savings to you through lower monthly payments. You don't get the credit directly, but it can slightly improve lease/PPA economics. For most homeowners, ownership still wins overall — but this is worth knowing.
What it means for Massachusetts
Here's the reassuring part: Massachusetts has one of the strongest state-level incentive stacks in the country, and it's fully intact for 2026. Between SMART production income, full retail net metering, the $1,000 state credit, and sales/property tax exemptions, the math still works well — a typical system still pays back in about 7–8 years. The federal credit going away raises your upfront cost, but it doesn't break the case for solar in Massachusetts.
Why we lead with this
Because trust is the whole point of SolarClarity. If we'll tell you the uncomfortable truth about an expired credit up front, you can trust the rest of our numbers too. Solar in Massachusetts is still a strong financial decision in 2026 — it just needs to be made on real figures, not stale ones.
What the expiration means in real dollars
To make the change concrete: on a typical $33,100 Massachusetts system, the old 30% federal credit would have been worth nearly $10,000. For a 2026 cash or loan purchase, that value is now zero. That is a meaningful difference, and it is exactly why so much stale online content makes solar look cheaper than it is — those pages still bake in a credit that no longer exists. A homeowner who budgets based on that outdated math will be unpleasantly surprised. The honest 2026 out-of-pocket, after the Massachusetts state incentives, is around $30,000 for a cash buyer, not the low-twenties figure a stale calculator might show.
Why Massachusetts still works without it
The reassuring counterpoint is that Massachusetts was always one of the least federal-credit-dependent strong solar markets, precisely because its state stack is so robust. In many states, the 30% federal credit was the largest single incentive, and its loss changes the calculus significantly. In Massachusetts, the combination of SMART production income, full retail net metering on some of the nation's highest electricity rates, the state tax credit, and the tax exemptions together often exceeded what the federal credit provided. So while the expiration raises the upfront cost here as everywhere, it does not break the underlying case for solar in Massachusetts the way it might in a weaker-incentive state.
The lease and PPA nuance, explained fully
There is one path where federal credit value still flows in 2026, and it is worth understanding even if it is not the right choice for most. Third-party-owned systems — leases and power purchase agreements — are owned by a company, not the homeowner, and that company can still claim the commercial investment tax credit under Section 48E for projects meeting certain timing requirements. The company may pass a portion of that value back to you through lower monthly payments. You never receive the credit directly, and you give up the SMART income and state tax credit that ownership would capture. For most homeowners who can own their system, ownership still produces the better outcome — but for those who cannot use a tax credit or cannot finance a purchase, this nuance is worth knowing.