The federal solar tax credit landscape changed materially in 2025-2026, and the headlines were louder than the actual impact. Here's what's still on the table for residential solar in 2026, what you can stack on top, and the ROI math at current electricity rates.
The federal credit, plain
The Residential Clean Energy Credit (the IRA-era 30% credit) is still in effect for systems placed in service in 2026. Key details:
- Rate: 30% of eligible costs through 2032 by current law. (Always confirm with a tax professional — credit schedules are subject to legislative change.)
- Eligible costs: panels, inverters, mounting hardware, wiring, labor, permits, inspection, and battery storage installed at the same time. A standalone battery added to an existing array is also eligible if rated ≥ 3 kWh.
- No income cap. Unlike the EV credit, residential solar has no AGI threshold.
- Carryforward: if your tax liability is too small to absorb the full credit in year one, the unused amount carries forward indefinitely until used.
State and utility incentives still matter
The federal credit is the headline, but state-level and utility-level programs often add 10-25% on top. As of Q1 2026:
- New York stacks a state tax credit (25% up to $5,000) on the federal 30%. NYSERDA also offers per-kW rebates for income-qualified households.
- California shifted to the NEM 3.0 net-metering structure. Smaller export credit but pairing solar with battery storage recovers most of the ROI gap.
- Texas doesn't offer a state tax credit, but several utilities (Austin Energy, CPS Energy) offer per-kW rebates that bring effective system costs down to the same range as rebate-heavy states.
- Florida offers no state tax credit but has full retail-rate net metering and a property-tax exemption on the added solar value, which compounds over time.
DSIRE (the federal database of state and utility incentives) is the single best place to look up what stacks in your ZIP.
The 2026 ROI math
Typical 7 kW residential system, all-in installed cost in 2026 of $18,000-$24,000 before incentives. After the 30% federal credit: $12,600-$16,800. After typical state/utility stacking: $11,000-$15,000.
At a U.S. average residential rate of ~16¢/kWh and 7 kW producing ~10,500 kWh annually in a sunny ZIP, you offset roughly $1,680 of annual electricity cost. Payback runs 7 to 10 years. After payback, you're running on free electricity for the remaining 15-20 years of system life.
Battery storage shifts the math. A 13.5 kWh battery adds $9,000-$13,000 to the install (also 30%-credit eligible) but the value depends entirely on your local rate structure. If you're on a time-of-use plan with a wide peak/off-peak spread (California, NY, parts of Texas), batteries pay back in 8-12 years. On flat-rate residential plans they're primarily backup, not savings.
What to ask your installer
- What system size matches my actual annual kWh consumption? (Pull a year of utility bills before any quote.)
- Are you UL-certified for installation? Are inverters and panels covered by 25-year warranties?
- What net-metering structure applies in my utility territory today, and is it scheduled to change?
- What's the projected first-year production estimate, and what data set is it based on (NREL PVWatts, Aurora, something else)?
- Lien waiver and final inspection sign-off — are both included in the contract?
Bottom line
The 2026 economics for residential solar are still favorable in most US metros, especially when you stack state and utility incentives. The federal 30% credit alone pays for the panels; the state-level layer pays for the battery if you want one. The math gets worse only if you live in a low-sun ZIP with low electricity rates and no state incentives — and even then, a 20-year operating-cost analysis usually pencils.
Get three quotes from licensed solar installers, ask for line items including incentive math, and confirm with a tax pro before you sign. The credit is straightforward; the contractor markup is where the variance lives.