The 30% Federal Solar Tax Credit Is Gone. Here's What That Actually Means.

If you've been putting off solar while you "figured out the incentives," the math changed under you. The federal residential solar tax credit — the 30% one that's been the backbone of solar economics for over a decade — expired on December 31, 2025. It was repealed by a federal budget law signed in July 2025, and there was no phase-out period and no grandfathering for projects that started but didn't finish in time. If your system wasn't placed in service by the last day of 2025, the credit isn't there.

What Actually Happened

The credit in question is Section 25D of the tax code, sometimes just called the Residential Clean Energy Credit. It let a homeowner who bought solar — cash or loan — deduct 30% of the system cost directly off their federal tax bill. That's gone for any system installed starting January 1, 2026. It's not reduced, not phased down over a few years. It's zero.

What Didn't Change

Two things are easy to miss in the headlines. First, this only affects homeowners who buy their system outright. If you go with a lease or a power purchase agreement (PPA) — where a solar company owns the equipment and you just pay for the electricity it produces — the company itself can still claim a similar federal credit on the commercial side, through roughly the end of 2027, and typically passes some of that value through as a lower monthly payment. The economics are different from owning a system outright, but the federal incentive hasn't vanished from the table entirely for everyone.

Second, none of this touched Massachusetts' own incentive programs, which run through the state, not Washington. Those are unaffected by federal tax law.

What Massachusetts Still Offers

The Commonwealth has one of the strongest state-level incentive stacks in the country, federal credit or not:

• SMART 3.0 — a state production incentive that pays solar owners a set rate for every kilowatt-hour their system generates, on top of net metering, for a multi-year term that's locked in at the time you apply.
• Net metering — when your panels produce more than you're using, the excess goes back to the grid and you get a bill credit close to the full retail rate, for systems up to 25 kW.
• A state tax credit — 15% of system cost, capped at $1,000, non-refundable but carries forward if you can't use it all in one year.
• Sales tax exemption on the equipment itself.
• Property tax exemption — the value solar adds to your home doesn't increase your property tax bill.

So Is Solar Still Worth It in 2026?

The honest answer: it depends on the math for your specific roof and usage, but the case is different than it was, not dead. Massachusetts has some of the highest electricity rates in the country, which is now doing more of the heavy lifting than the federal credit used to. If you buy outright, you own a system that's saving you money on every single bill for 25-plus years, just without that initial 30% knocked off day one. If you go the lease or PPA route, you trade some of that long-term upside for little or no money down and a payment that's typically lower than what you're paying the utility now.

The Honest Next Step

Neither path is automatically the right one, and neither is something a generic article can calculate for you — that depends on your roof, your usage history, your utility, and which incentive block happens to be open the week you apply. That's what an actual site visit and a real proposal are for.