How Much Do Solar Panels Cost? Residential Solar Installation Pricing
Updated: 6 days ago
If you are trying to budget for home solar, one national price number will only take you so far.
A current marketplace benchmark puts solar-only quotes at about $2.62 per watt before incentives. But another large national dataset of completed residential installations reports higher median installed prices.
Both can be useful.
They are measuring different things.
The better way to understand solar cost is to look at:
system size + cost per watt + project scope
Then check what is actually included in the quote.
What does home solar cost right now?
EnergySage reported a $2.62/W median quoted price for solar-only systems in the first half of 2026, before incentives.
That number comes from homeowners shopping for solar through the EnergySage marketplace. It is a quote-market benchmark, not a claim that every U.S. installation should cost $2.62/W.
Berkeley Lab provides a different view by examining reported prices for systems that were actually installed.
For host-owned, stand-alone residential systems installed in 2025, its 2026 data update reports median upfront installed prices of approximately:
Berkeley Lab 2025 installations | Median reported price |
All host-owned residential | $3.60/W |
Known cash purchase | $3.00/W |
Known loan-financed | $4.50/W |
Berkeley Lab defines these as upfront prices paid by the system owner before incentives. Its installed-price data can include financing fees passed through the installer and, in some cases, ancillary work such as electrical or roofing work. Ongoing loan interest is not included.
So EnergySage's $2.62/W marketplace quote and Berkeley Lab's $3.60/W installed-price median should not be averaged together.
They answer different questions:
EnergySage: What kinds of solar-only prices are homeowners being quoted on its marketplace?
Berkeley Lab: What upfront prices are being reported for completed installations in its national project dataset?
That difference is useful when evaluating your own proposal.
Three solar-cost numbers you should understand
Before comparing quotes, find these three numbers.
1. Total installed price
This is the dollar amount for the project before subtracting incentives.
Make sure you know what the installer includes in that number.
2. System size
Residential solar systems are normally described in kilowatts of DC capacity.
For example:
20 panels × 440 watts = 8.8 kW
Berkeley Lab found the median U.S. residential system installed in 2025 was 7.7 kW, with most systems in its data falling roughly between 5 and 12 kW.
3. Cost per watt
Cost per watt gives you a simple way to normalize quotes of different sizes.
The calculation is:
Total solar price ÷ system watts = cost per watt
For example, a $26,200 price for a 10 kW system works out to:
$26,200 ÷ 10,000 W = $2.62/W
Cost per watt is useful, but it does not tell you whether two quotes contain the same equipment or project scope.
What would different system sizes cost at $2.62/W?
The table below simply applies EnergySage's H1 2026 solar-only median quote of $2.62/W to several system sizes.
It is not a prediction of what your home will cost.
Solar system size | Illustrative price at $2.62/W |
5 kW | $13,100 |
7.7 kW | $20,174 |
10 kW | $26,200 |
12 kW | $31,440 |
15 kW | $39,300 |
Actual proposals may be substantially above or below these figures because system design, location, installer, equipment, electrical work, roof conditions, financing and other project requirements differ.
That is why the table works best as a benchmark, not a budget guarantee.
A real IntegrateSun project shows why benchmarks are only a starting point
One recent IntegrateSun cash proposal included a 16.72 kW solar system.
The solar-only cash purchase price was $34,788, or roughly $2.08/W. The proposal stated that the price included design, engineering, permitting, materials, installation and specified after-sales service.
That does not mean IntegrateSun solar universally costs $2.08/W.
It is one real project.
Its value is showing why your actual quote can land above or below a national benchmark. System size, equipment, property conditions and project scope still determine the final price.
What is included in the price of a solar installation?
Panels are only one part of a residential solar project.
A professionally installed system may involve:
solar modules
inverter equipment
racking and mounting hardware
wiring and other electrical components
design and engineering
permitting
utility interconnection work
installation labor
inspections and commissioning
monitoring equipment or software
installer operating and administrative costs
The Department of Energy refers to many of the non-hardware expenses as soft costs. These can include design, permitting, installation, interconnection, customer acquisition and company overhead.
That is another reason the retail price of solar is not simply:
panel price × number of panels
What makes one solar installation cost more than another?
System size
Larger systems require more equipment and typically cost more in total.
But larger systems can sometimes have a lower cost per watt because certain project costs do not increase proportionally with every additional panel.
System size should be based on the home's electricity use and the production expected at that specific property—not a generic national rule.
NREL's PVWatts model, for example, accounts for inputs including location, system size, tilt, azimuth and system losses when estimating solar production.
Roof and site conditions
A simple roof and a complex roof are not the same installation.
Project design can be affected by:
roof condition
roof material
pitch
usable roof area
multiple roof planes
shade
equipment location
access
We would not use a national statement such as “a tile roof adds $2,000” because project-specific labor and scope vary too much.
Electrical work
Some homes require additional electrical work before or during solar installation.
That can include changes involving the electrical panel, service equipment or other parts of the home's electrical infrastructure.
Do not assume an electrical upgrade is automatically needed—or automatically included in every quoted price.
If one is required, ask the installer to identify the reason and price it clearly.
Equipment choice
Two systems with the same DC size can use different panels, inverters, mounting hardware and monitoring systems.
Those choices can affect:
project price
design flexibility
warranties
production characteristics
future service requirements
This is why cost per watt should be used alongside—not instead of—the equipment list.
Permitting and interconnection
Solar requires local permitting and utility interconnection.
Processes and requirements differ across jurisdictions and utilities, and those differences can affect installer workload and project cost.
Site-specific construction
Some homes require project work such as:
longer electrical runs
trenching
work on detached structures
ground-mounted equipment
structural work
vegetation or access preparation
These should be treated as project-specific costs, not universal solar adders.
Battery storage
A battery can materially increase the price of a solar project.
It also changes the project itself.
Battery capacity, power output, number of batteries, electrical integration and backup scope all affect cost.
For that reason, do not compare a solar-only quote with a solar-plus-storage quote as though they are the same project.
What costs may sit outside the base solar quote?
Before signing, ask whether the quoted price includes or excludes:
roof work
electrical upgrades
trenching
tree work
battery storage
structural repairs
permit-related requirements
utility-required work
There is no responsible national dollar amount we can attach to each of those items.
A main-panel upgrade on one property, for example, may require a completely different scope than electrical work on another home.
What matters is that the potential expense is identified before you compare installers solely on headline price.
Should you subtract a 30% federal solar tax credit from today's price?
Not for a residential solar installation completed after December 31, 2025.
The federal Residential Clean Energy Credit under Section 25D is no longer available for a residential solar installation completed after that date.
IRS guidance also makes clear that paying for the system before the deadline does not preserve the credit if installation is completed afterward.
So a current solar-cost table should not automatically turn:
$25,000 gross price
into
$17,500 “after federal credit”
as though that reduction still applies.
State, utility and other programs may still affect what an eligible homeowner ultimately pays. Because those rules vary by location, program and ownership structure, see our solar incentives guide rather than relying on a generic national deduction.
How should you compare two solar prices?
Start with cost per watt.
But do not stop there.
Suppose Installer A quotes:
$24,000 for 8 kW = $3.00/W
and Installer B quotes:
$25,500 for 8 kW = $3.19/W
Installer A appears cheaper.
But you still need to determine whether both quotes contain the same:
equipment
installation scope
electrical work
roof work
production assumptions
warranties
monitoring
permitting and interconnection responsibilities
A lower $/W does not automatically mean a better proposal if important work has been excluded.
For a full framework, use our solar quote-comparison guide.
Why can financed solar look more expensive than the cash price?
This is where price and financing need to be separated.
Berkeley Lab's 2025 installation data reported median upfront prices of approximately:
$3.00/W for known cash purchases
and
$4.50/W for known loan-financed systems.
The researchers note that loan-financed prices can include loan-origination costs rolled into the upfront price. They also caution that other factors can contribute to the gap. The figures do not include ongoing interest payments.
That means a financed project price should not automatically be interpreted as the underlying cash price of the solar system.
Ask for both:
What is the cash price?
What amount am I financing?
For the broader financing decision, use our solar financing guide.
For a deeper explanation of solar-loan dealer fees, see our solar dealer-fee guide.
Does a lower solar price mean a faster payback?
Not necessarily.
Installation cost is one important input in solar payback, but it is not the entire calculation.
Financial performance also depends on:
actual solar production
household electricity consumption
utility electricity rates
how exported solar is compensated
applicable incentives
financing costs
how long the homeowner keeps the system
DOE similarly notes that household consumption, system production, financing, and utility compensation all influence potential solar savings.
That is why this page does not publish a generic claim such as:
“Solar pays for itself in 8–12 years.”
The payback period for an individual home should be calculated using that project's actual cost and realistic energy assumptions.
What should you ask for before comparing solar costs?
Before you decide that one solar quote is expensive or cheap, make sure you know:
What is the total cash price?
What is the DC system size in kW?
What is the cost per watt?
What exact panel and inverter models are included?
What first-year solar production is being estimated?
What electrical work is included?
Is any roof or structural work included?
Are permitting and utility interconnection included?
Is battery storage included?
Which items could become additional charges later?
If financing is involved, how does the amount financed differ from the cash price?
Those questions tell you far more than the headline dollar amount alone.
So, how much should your solar installation cost?
A national benchmark can tell you whether a proposal deserves a closer look.
It cannot price your house.
EnergySage's H1 2026 marketplace data reported a $2.62/W median quoted price for solar-only systems before incentives, while Berkeley Lab's separate installed-system dataset reported a $3.60/W median for host-owned residential systems installed in 2025. The methodologies differ, so the figures should not be blended into one average.
Your actual price depends on the system your home needs and the work required to install it.
The practical goal is not to find a quote that matches a national average perfectly.
It is to understand:
what system you are buying, what work is included, and why the price is what it is.
IntegrateSun can evaluate your electricity use, property and project requirements and provide a solar proposal showing the system size, equipment, estimated production and project price for your home.
FAQ
What is the average cost of solar panels?
There is no single national figure that describes every project.
EnergySage's H1 2026 marketplace data reported a $2.62/W median quoted price for solar-only systems before incentives. Berkeley Lab's separate installed-system dataset reported a $3.60/W median for host-owned residential systems installed in 2025.
The methodologies are different, so the figures should not be blended into one average.
What is a good price per watt for solar?
Cost per watt is useful for comparing proposals, but there is no universal threshold that makes a quote automatically good or bad.
Compare your $/W with relevant current benchmarks, then examine equipment, project scope, production and purchase method.
Does a larger solar system cost more?
Usually in total dollars, yes.
But total system price and cost per watt are different measures. Larger systems may sometimes achieve a lower price per watt even while costing more overall.
Is a battery included in the price of solar panels?
Only if the proposal specifically includes it.
A solar-plus-storage system is a different project from solar alone, so check the equipment list and price breakdown.
Why are two solar quotes for the same house so different?
Possible reasons include:
different system sizes
different equipment
different installation scope
roof or electrical work
production assumptions
cash versus financed pricing
batteries
other project-specific requirements
Compare the full scope before concluding that one installer simply charges more.
Is there still a 30% federal tax credit for residential solar?
Not for expenditures made after December 31, 2025.
The IRS states that the Section 25D Residential Clean Energy Credit is not available for expenditures made after that date.
Why can the financed solar price be higher than the cash price?
Some solar financing structures include fees or financing costs in the amount financed or reported upfront project price.
Berkeley Lab's installed-price data shows a significant gap between known cash and loan-financed residential systems and notes that loan-origination fees may contribute to that difference.
Ask for the cash price before comparing financing offers.
