If you’ve started shopping for solar, you’ve probably noticed the quotes are all over the place. One installer says $18,000, the next says $31,000, and a door-to-door rep quotes a monthly payment with no total at all. Here’s what’s actually driving those numbers in 2026, and how to sanity-check any quote you’re handed.
The short answer
For a typical US home, a solar system in 2026 runs about $2.20 to $3.00 per watt installed, before any incentives. Most homes need a 7 kW to 11 kW system, which puts the gross price in the $16,000 to $33,000 range depending on size, equipment, and your local market.
That’s the sticker price. What you actually pay after incentives, and whether it pays off, depends on the details below.
What you’re actually paying for
A solar quote bundles several things into one number:
- Panels: usually 30–40% of the cost. Premium panels cost more per watt but produce more in the same roof space.
- Inverter: converts panel output into usable AC power. String inverters are cheaper; microinverters and power optimizers cost more but handle shade better.
- Racking, wiring, and electrical: the mounting hardware and the work to tie into your panel.
- Labor, permits, and inspection: varies a lot by state and utility.
- Installer overhead and margin: this is where quotes diverge most. A national brand with heavy ad spend often quotes 20–40% higher than a strong local installer for the same hardware.
That last point is why comparing multiple quotes matters more than almost anything else.
The federal tax credit changed: read this carefully
This is the biggest 2026 shift. The Section 25D residential clean energy credit, the 30% credit homeowners claimed when they bought a system, was repealed for systems placed in service after December 31, 2025. If you purchase a system outright in 2026, you generally cannot claim that 30% on your taxes the way buyers could in 2024–2025.
There’s a separate pathway (Section 48E) tied to third-party-owned systems, leases and power purchase agreements, where the installer or financier owns the system and may pass some benefit through to you in the form of a lower rate. The construction-start deadlines and eligibility rules here are strict and change frequently.
Bottom line: do not take any salesperson’s word that “you’ll get 30% back.” Verify current eligibility with the IRS and a qualified tax professional for your specific situation before you sign anything.
Don’t forget state and utility incentives
Federal rules are only half the picture. Depending on where you live, you may still have access to:
- State income tax credits or rebates
- Property tax exemptions (so solar doesn’t raise your assessed value)
- Sales tax exemptions on the equipment
- Utility rebates and net metering / solar buyback programs
These vary enormously by state and even by utility. The DSIRE database is the best public source, and our state-by-state guides summarize what’s current where you live.
Is it worth it for your home?
Solar tends to pay off fastest when:
- Your electric bill is high: over $150/month is where the math usually gets attractive.
- Your roof gets good sun: south-facing, unshaded, and in decent condition.
- Your local electricity rates are rising: the faster rates climb, the more your solar is worth.
- You plan to stay put: payback periods commonly land between 8 and 13 years, so the longer you own the home, the better.
If most of those are true, lifetime savings over a system’s 25-year life commonly land in the $20,000 to $45,000 range.
How to protect yourself from a bad deal
- Get at least three quotes from licensed local installers, not just the first rep who knocks.
- Compare price per watt, not the total: it’s the only apples-to-apples number.
- Confirm the equipment (panel and inverter make/model) is identical across quotes before comparing price.
- Be skeptical of “monthly payment only” pitches that hide the total cost and financing terms.
- Verify every incentive claim independently before signing.
What that means at different system sizes
Price per watt is easier to use if you turn it into a total for your own roof. These are straight multiplications of the $2.20 to $3.00 range above, before incentives.
| System size | Typical home | Gross price at $2.20 to $3.00 a watt |
|---|---|---|
| 6 kW | Small home, low bill | $13,200 to $18,000 |
| 8 kW | Average home | $17,600 to $24,000 |
| 10 kW | Larger home or electric heat | $22,000 to $30,000 |
| 12 kW | Large home, electric car, heat pump | $26,400 to $36,000 |
A quote far below the low end deserves a question about the equipment. A quote far above the top end deserves a second installer.
A worked example with the assumptions shown
Here is how the payback arithmetic works, using made-up round numbers so you can swap in your own. These are not predictions for your house.
- System: 8 kW at $2.60 a watt, so $20,800.
- Output: if the system covers $2,000 a year of electricity, simple payback is $20,800 divided by $2,000, or about 10.4 years.
- If your bills run $1,500 a year, the same system takes about 14 years. At $2,600 a year, about 8 years.
The method is the useful part: divide the total price by the yearly bill the system will actually cover. Your installer’s production estimate and your own twelve months of bills are the two inputs. If the installer will not show you the production estimate in writing, treat that as a warning sign.
Questions to put to every installer
- What is the price per watt, with the equipment named by make and model?
- How many kilowatt-hours a year do you expect this system to produce, and how did you work that out for my roof?
- What happens to my payment and my savings if I sell the home?
- Who handles the permit and the utility connection, and is that included in the price?
- What is the warranty on the panels, the inverter and the workmanship, and who honours it if your company closes?
The thing a solar quote does not tell you: it will not keep the lights on
Most people assume that if they put panels on the roof, the house keeps running when the grid fails. A standard grid-tied system does not. It is designed to shut itself off during an outage, so nobody working on the lines is hurt by power flowing backwards from your roof. Your panels sit idle in the sun while the house is dark.
Keeping the house running takes a battery plus backup wiring, which adds to the quote, or a separate portable unit. If an outage is what worries you more than your bill, the numbers look very different:
- Rooftop solar is a long-term bill project, priced in tens of thousands of dollars and installed by a contractor.
- A portable solar generator is an outage project. It costs a small fraction of a rooftop system, ships to your door and needs no roof work, though it runs essentials rather than the whole house.
If outages are the real concern, our buying guide to solar generators for home backup lists what each size runs and for how long, and how to size a solar generator shows you how to work out what you need. If you want a lower bill instead, carry on with the quote advice above. Plenty of households end up wanting both, and they are separate purchases.
When you’re ready to compare quotes from vetted local installers, find your state’s guide, where you can request free, no-obligation quotes.