How Much Do Solar Panels Cost in 2026?
Solar panel pricing is confusing by design: installers quote in different units, some bundle financing costs into the sticker price, and national averages can be misleading if your state has very different electricity rates or labor costs. Here’s a clearer picture.
The two numbers that matter: price per watt and system size
Solar pricing is almost always expressed as dollars per watt (DC) — the total installed cost divided by the system’s rated capacity. As a national reference point, residential solar has commonly priced out around $2.50 to $3.50 per watt before any incentives, though this varies by region, roof complexity, and equipment tier.
Multiply that per-watt price by your system size to get a rough total. For example, a 7 kW system (7,000 watts) at $3.00/watt comes out to about $21,000 before incentives.
Typical cost by system size (reference only)
| System size | Rough cost before credit | Rough cost after 30% federal credit |
|---|---|---|
| 4 kW | $10,000–$14,000 | $7,000–$9,800 |
| 6 kW | $15,000–$21,000 | $10,500–$14,700 |
| 8 kW | $20,000–$28,000 | $14,000–$19,600 |
| 10 kW | $25,000–$35,000 | $17,500–$24,500 |
These ranges are illustrative, based on the reference per-watt figures above — use our solar calculator to get an estimate using your own state’s data and your monthly bill, and always get a written quote from a licensed installer for real numbers.
What actually drives the price
- Equipment tier. Premium panel brands and microinverters cost more than standard-tier equipment, sometimes 15-25% more for comparable wattage.
- Roof complexity. A simple, unshaded, south-facing roof is cheaper to install on than a steep, multi-plane, or heavily shaded roof.
- Labor market. Installation labor costs vary significantly by region and by how competitive the local installer market is.
- Permitting and interconnection fees. These vary by city and utility and are sometimes bundled into the quote, sometimes itemized separately.
- Battery storage add-on. Adding a battery can add a meaningful amount to the total — see our guide on whether you need solar battery storage.
Why your state matters more than the national average
A national average price per watt doesn’t tell you much about your actual payback, because that depends just as much on your electricity rate and local sun exposure as it does on installed cost. A $21,000 system in a state with $0.30/kWh electricity pays back much faster than the same system in a state with $0.13/kWh electricity. See our state guides for reference electricity rates and sun-hour data by state.
How to sanity-check a quote
- Ask for the price per watt (DC), not just the total. This lets you compare quotes on an apples-to-apples basis.
- Confirm whether the federal tax credit is already subtracted or if the quoted number is before the credit.
- Get at least two or three quotes. Pricing varies enough between installers in the same area that comparison shopping is genuinely worth the time — see our guide on how to choose a solar installer.
- Ask what’s included — permitting, monitoring equipment, roof penetration warranties, and post-install support vary between installers even at similar price points.
The bottom line
Use national averages to get oriented, not to budget precisely. The real number for your home depends on your roof, your state’s electricity rate and sun hours, and the specific equipment and installer you choose — all things a written local quote will tell you that a blog post can’t.
Frequently Asked Questions
- What is the average cost of solar panels for a house?
- As a national reference figure, residential solar systems commonly cost around $2.50 to $3.50 per watt before incentives, meaning a typical 6-8 kW system might run roughly $15,000 to $28,000 before the federal tax credit. These are approximate averages — actual pricing varies significantly by state, installer, and equipment choice.
- Does the price per watt go down for bigger systems?
- Often, yes — larger systems typically have a slightly lower cost per watt because fixed costs like permitting, design, and labor mobilization are spread across more panels. The difference is usually modest, not dramatic.
- Is the federal tax credit already included in typical cost estimates you see online?
- Not always — read carefully. Some quotes and articles show pricing before the 30% federal credit, others show it after. Always ask an installer to clearly separate the pre-credit price from the after-credit price.