The 30% federal residential solar tax credit is gone. No phase-down, no grace period. The One Big Beautiful Bill Act, signed July 4, 2025, eliminated Section 25D for any system installed after December 31, 2025, and if you’re shopping for solar right now, you’re doing the math in a fundamentally different environment than your neighbor who signed a contract two years ago. BloombergNEF’s June 15, 2026 report projects only 4.1 GW of new residential solar additions this year, down 15% from 2025 and the lowest figure in five years. The market isn’t expected to recover to 2023 record levels within the next decade. So the question sitting in front of you isn’t “should I go solar” in some abstract sense. It’s whether solar pencils out for your specific address when you can no longer subtract $9,000+ off your federal tax bill.

I’ll be honest: the answer is messier than either the solar salespeople or the skeptics want to admit.

What the Payback Numbers Actually Look Like Now

State/RegionElectricity RatesNet MeteringState IncentivesPayback Period
CaliforniaHighFavorable (NEM 3.0)State rebates7-9 years
MassachusettsHighFavorableSolar Massachusetts Renewable Target7-9 years
South CarolinaMediumModerate25% credit (capped $35,000)9-11 years
GeorgiaLowLimitedMinimal15-21 years
TennesseeLowLimitedMinimal15-21 years
ArkansasLowLimitedMinimal15-21 years
New YorkMediumModerate25% state tax credit (capped $5,000)10-14 years*

*Estimated based on regional patterns; consult local utility rates.

What surprised me when I started running the real numbers was how dramatically geography dominates this calculation. We’re not talking about a 20% swing. We’re talking about payback periods that range from roughly 7 years to over 20 years depending entirely on where you live.

California and Massachusetts remain strong markets. High retail electricity rates, net metering policies that still credit excess generation at reasonable rates, and state-level rebates compress payback to roughly 7 to 9 years even without the federal credit. That’s still a reasonable return on a 25-year asset.

States like South Carolina land in the middle, around 9 to 11 years, thanks to a combination of decent sun hours and state incentives that partially fill the federal gap. Livable, but not exciting.

Then there’s the third category, and this is where I’d pump the brakes hard before signing anything. Georgia, Tennessee, Arkansas, and similar low-incentive, low-rate states are now looking at payback periods of 15 to 21 years. On a system warrantied for 25 years, that’s a bet you break even near the end of the panel’s useful life. The credit used to paper over this problem. Now it doesn’t.

The average 12 kW system costs around $30,500 installed in 2026, near historic lows for panel hardware. That’s a real and meaningful offset to the lost tax credit. But $9,000+ in lost federal tax savings doesn’t disappear because panels got cheaper. In low-rate utility territories, you were marginal before. You may be underwater now.

The Lease and PPA Workaround (With Tradeoffs)

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Here’s the one federal pathway that survived: third-party ownership. Installers who own the system themselves can still claim the Section 48E commercial investment tax credit, which runs through end of 2027. They pass some of that value to you through a lease or power purchase agreement. EnergySage has been tracking this shift closely, and the share of homeowners going the lease or PPA route has climbed noticeably in early 2026 as cash-purchase economics softened.

The tradeoff is real, though, and I’ve seen installers gloss over it. You don’t own the equipment. That matters when you sell your house, because the lease transfers with the sale and some buyers don’t want the obligation. It matters for maintenance decisions. And it matters for the economics: you’re locking in a rate, not banking the long-term upside. If your utility rates spike in year 8, the installer captures much of that windfall, not you.

Leases aren’t bad products. They’re just different products. If you’re in a marginal-payback state and you need to reduce your monthly electricity bill without a large capital outlay, a well-structured PPA might be the right call. If you’re in California and you can buy the system outright, the math still favors ownership.

The Battery Question Is Now Financial, Not Just Backup

Somewhere around 40 to 45% of new residential solar systems installed in Q1 2026 included a battery, up from 35% in 2025. That’s not primarily driven by blackout anxiety, though that’s part of it. It’s driven by a quiet but significant erosion of net metering policies across the country.

California’s NEM 3.0, which slashed export rates, is the most talked-about example. But similar utility policy changes have spread to other states. If you’re generating power at noon and exporting it for 4 cents per kWh but buying it back at 7 PM for 18 cents, you’re leaving money on the table. A battery lets you shift that generation to your own high-cost evening consumption.

What this means for payback analysis: you can’t calculate solar ROI in 2026 without also modeling how your utility handles exports. If you’re in a state where net metering is generous, a battery adds cost and may not materially improve your payback. If you’re somewhere that’s degraded export compensation, storage becomes part of the financial case, not just a resilience feature. Ask any installer you talk to for your utility’s current export rate. If they don’t know it off the top of their head, that’s a red flag.

State Incentives Are the New Swing Factor

With the federal credit gone, state incentives have moved from “nice bonus” to “deal-maker or deal-breaker.” The research here is mixed on which programs will survive budget pressures in the next few years, but the ones that matter right now include New York’s 25% state tax credit (capped at $5,000), Massachusetts’s Solar Massachusetts Renewable Target program, and South Carolina’s 25% credit capped at $35,000 for residential systems. These aren’t trivial numbers.

A few things to verify before assuming any state incentive applies to you: check whether the credit is refundable or non-refundable (a non-refundable credit only helps if you have state tax liability to offset), confirm the current program status with your state energy office directly rather than relying on installer marketing materials, and look at your utility’s specific interconnection timeline because some programs have wait lists that affect which incentive year you actually fall into.

SEIA’s June 2026 data tracking 6 million U.S. solar installations is useful context here. The cumulative installed base is large, but new installation activity has real momentum problems right now. That installer who calls you back in 2026 may be hungrier for business than one would have been in 2023, which cuts both ways: you might get a better price, or you might get someone who overpromises to close the deal.

The honest version of the solar pitch in mid-2026 is this: if you live somewhere with high electricity rates, good sun, and meaningful state incentives, solar still makes financial sense and the payback math, while longer than two years ago, remains reasonable. If two of those three conditions are absent, you need to run your actual numbers, not industry averages, before committing to a 20-year financial obligation. The federal credit that used to make borderline deals workable is gone, and no amount of installer enthusiasm changes that arithmetic.

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