Home solar in 2026: typical system costs, payback math without the expired federal tax credit, and when leases or state incentives still change the answer.
Buying home solar in 2026 costs roughly $2.50 to $3.50 per installed watt, and the 30% federal tax credit no longer exists for purchased systems. The 25D Residential Clean Energy Credit expired for systems placed in service after December 31, 2025. Solar can still pay off, but the math now depends heavily on your electric rate, your state’s incentives, and how long you’ll stay in the home.
Key facts:
Congress ended the residential solar credit in the July 2025 budget law, with no phase-down. A purchase that would have earned a $6,000 credit in December 2025 earns nothing in 2026. That single change added several years to typical payback periods, and it’s why older articles quoting “30% off” no longer apply to purchases.
Third-party ownership is the exception. Installers who lease you a system or sell you power through a PPA may still claim a commercial credit on their side for a while longer, and competitive installers pass some of that through as lower payments.
Your utility’s net metering policy moves this number a lot. Full retail-rate credit for exported power keeps the math above intact; reduced export rates stretch it.
High electric rates, good sun, strong state incentives, and a long stay in the house. Hawaii, California, and much of the Northeast still pencil out. Cheap-power states with weak net metering are now hard to justify on savings alone, though price certainty and backup (with a battery) have their own value.
Solar panels are photons doing work: the same physics your kids can read about on our solar panel section of the light energy page and sun energy hub. For the household side, start with your average bill so you know what you’re offsetting, and cut waste first with the savings guide: the cheapest kilowatt-hour is the one you don’t use.
Last updated: July 06, 2026
Is there still a federal tax credit for home solar in 2026?
No, not for systems you buy. The 25D Residential Clean Energy Credit ended for systems placed in service after December 31, 2025. Leased systems and power purchase agreements can still benefit indirectly, because the installer may claim a commercial credit and price that into your contract.
How much do home solar panels cost in 2026?
A typical purchased system runs roughly $2.50 to $3.50 per watt installed, so a common 7 kW system lands between about $18,000 and $25,000 before any state or utility incentives.
How long until solar pays for itself?
Without the federal credit, typical payback stretches to roughly 8 to 15 years depending on your electric rate, sunshine, and state incentives. High-rate states pay back fastest. Panels are usually warrantied for 25 years, so the math can still work.
Is a solar lease better than buying now?
The gap narrowed when the purchase credit expired. Leases and PPAs can still capture commercial tax benefits through the installer, which shows up as lower payments. Compare the lease's total 20-year cost against buying before deciding, and read the escalator clause.
Do solar panels work on cloudy days?
Yes, at reduced output. Panels produce from daylight, not just direct sun. Expect roughly 10 to 25% of rated output under heavy cloud.
