Solar panel cost is confusing for one simple reason. Two quotes for the same house can be $8,000 apart, and both salespeople will tell you theirs is the better deal. The way to cut through it is one number: price per watt.
In 2026, home solar averages about $2.60 per watt before incentives, according to EnergySage. That puts a typical 8 kW system near $21,000 and a 12 kW system near $31,000. Most homes need 6 to 12 kW.
Big change for 2026. The 30% federal tax credit for homeowners who buy solar (Section 25D) ended for systems paid for after December 31, 2025.
Many older cost guides and sales pitches still subtract it. If a quote shows a “30% federal credit” on a system you’re buying in 2026, ask the installer to explain it in writing.
Solar is priced by the watt, not by the panel. Installers multiply your system size by a dollar-per-watt rate that already includes panels, inverter, racking, wiring, labor and permits.
That makes quotes easy to compare once you know the math. A 10 kW system is 10,000 watts, so at $2.60 per watt it costs $26,000.
Solar panel cost by system size
Bigger systems cost more in total but less per watt, because permits, design and setup are mostly fixed costs. These are national averages from EnergySage’s 2026 marketplace data.
| System size | Avg. cost per watt | Total before incentives | Roughly fits |
|---|---|---|---|
| 4 kW | $2.89 | $11,560 | Small home or low usage |
| 6 kW | $2.68 | $16,080 | Average home in a sunny state |
| 8 kW | $2.62 | $20,960 | Average US home |
| 10 kW | $2.58 | $25,800 | Larger home or electric heat |
| 12 kW | $2.56 | $30,720 | Big home, pool or EV charging |
| 15 kW | $2.47 | $37,050 | Very high usage |
Price per watt also swings by state. EnergySage reports Arizona near $2.27 per watt and Alabama near $3.82, mostly because of local competition and labor costs.
How big a system does your home need?
Pull up your last 12 electric bills and add up the kilowatt-hours (kWh). The average American home uses roughly 10,500 kWh a year.
Each kilowatt of panels makes about 1,200 to 1,600 kWh a year, depending on how sunny your area is. Arizona and Southern California sit near the top. Washington and Michigan sit near the bottom.
So the rough formula is your yearly kWh divided by about 1,400. A home using 10,500 kWh needs roughly a 7.5 kW system.
A good installer will do this with real roof and shade data. If a salesperson quotes a size without asking for your bills, that’s a warning sign.
Buy, finance or lease in 2026?
This decision matters more this year than it has in a long time, because of the tax credit change.
Paying cash
You own the system and keep every dollar of savings. Without the federal credit, the upfront price is higher than it was in 2025, so the payback takes longer.
EnergySage puts the average payback near 10 years. Homes with high electric rates and good net metering get there faster.
Solar loan
You still own the system, but interest adds to the true cost. Watch for loans with a hidden “dealer fee” built into the price, which can add 15% to 30%.
Ask for the cash price and the loan price side by side. The difference tells you what the financing really costs.
Lease or PPA
A company owns the panels on your roof and you pay a monthly fee or a rate per kWh. There’s little or no upfront cost.
Leasing companies can still claim a separate business tax credit (Section 48E) that homeowners can’t, and some pass part of that saving into lower monthly rates. But leases often run 20 to 25 years and can complicate selling your home.
Our take: buying still wins over 25 years for most homeowners who can afford it, but a fair lease from a reputable company is no longer the bad deal it often was when buyers got 30% back.
Incentives that still exist in 2026
The federal homeowner credit is gone, but local money hasn’t disappeared.
- State tax credits or rebates in some states (check your state energy office)
- Utility rebates and performance payments
- Solar renewable energy certificates (SRECs), which pay you for power you produce in some states
- Net metering, which credits you for extra power sent to the grid
- Property tax exemptions so solar doesn’t raise your assessment
The DSIRE database, run by NC State University, lists incentives by ZIP code. It’s the most complete free source.
Batteries took a hit too. Home batteries bought by homeowners in 2026 no longer get a federal credit, so a battery that cost $12,000 to $15,000 installed is now a harder sell unless your utility pays for backup or time-of-use savings.
What a real 2026 solar quote looks like
Example. A 2,200 sq ft home in North Carolina using 11,200 kWh a year, south-facing roof, buying with cash.
System size = 8 kW (about 20 panels at 400 watts each)
8,000 watts × $2.60 per watt = $20,800
Federal tax credit = $0 (ended for 2026 purchases)
Example utility rebate = varies, often $0 to a few thousand
Estimated cost = about $20,800 before any local incentive
At an electric rate near 15 cents per kWh, that system could save roughly $1,500 to $1,700 a year. That points to a payback of about 12 to 14 years, longer than the national average because North Carolina power is fairly cheap.
Things that raise a solar quote
An old roof is the first one. If your shingles have less than about 10 years left, replace them before solar goes up, because removing and reinstalling panels later can cost $3,000 or more. Our roof replacement cost guide shows what that would run.
Complex roofs with many angles, ground-mounted systems and premium panels all add cost. So does a main electrical panel upgrade, which often runs $1,500 to $4,000 if your home has an older 100-amp panel.
Shade matters too. Trees that block afternoon sun can cut output enough that a bigger system, or tree trimming, is needed.
How long until the panels turn on
Installation itself is quick. Most home systems go up in one to three days.
The paperwork takes longer. After you sign, the installer designs the system, applies for permits and files an interconnection request with your utility. That often takes a few weeks to a couple of months, depending on your city and utility.
After installation, the city inspects the work and the utility approves the system and may swap your meter. Only then can you turn the panels on. From contract to power, two to four months is common.
If the panels will sit on the roof for 25 years, it’s worth thinking about what else might fail around them. Our home warranty guide explains what those plans do and don’t cover, and roofs and panels are usually on the “don’t” list.
Watch out for “free solar” pitches
Ads and door knockers that promise “free solar” or “no-cost government panels” are almost always selling a lease, PPA or loan. Nothing is free, and some pitches still quote the expired 30% credit.
Never sign on the first visit. Read the contract for the escalator (how much the monthly payment rises each year), the term length and what happens if you sell the house.
Comparing solar quotes without getting lost
- Gather 12 months of bills. Total your yearly kWh so you know what size you actually need.
- Get at least three quotes. Include one local installer, not just national brands. Local companies often price lower.
- Compare price per watt. Divide each total price by the system size in watts. This removes the confusion of different sizes.
- Check the equipment. Note the panel brand, inverter type (string or microinverters) and warranty years for each.
- Ask about incentives in writing. Make each installer list every incentive they subtracted, and confirm it applies to a 2026 purchase.
Solar panel cost FAQs
Is there still a federal solar tax credit in 2026?
Not for homeowners who buy their system. The 30% Section 25D credit ended for expenses after December 31, 2025. Leasing companies may still claim a business credit.
How much do solar panels cost for a 2,000 sq ft house?
Usually $16,000 to $26,000 for a 6 to 10 kW system. Your electricity use matters more than square footage.
How many solar panels does it take to power a house?
Often 15 to 30 panels. A 400-watt panel setup of 20 panels equals an 8 kW system, which covers an average US home.
Do solar panels increase home value?
Owned systems usually add value in sunny, high-rate states. Leased systems can make a sale harder because the buyer must take over the lease.
How long do solar panels last?
Most panels carry 25-year warranties and keep producing after that at a slightly lower output. Inverters often need replacing after 10 to 15 years.
Is solar worth it without the tax credit?
It can be in states with high electric rates and good net metering. In cheap-power states, payback may stretch past 12 years.
Should I replace my roof before installing solar?
Yes, if the roof has less than about 10 years of life left. Pulling panels off later to reroof can cost $3,000 or more.
Prices on this page are national estimates based on published 2026 data from EnergySage. Tax credit details reflect the One Big Beautiful Bill Act of July 2025, summarized by GreenLancer. Find local incentives at DSIRE. This is general information, not tax advice.