How much does a home solar system cost?

According to studies by the U.S. Department of Energy, the all-in cost of a home solar panel system is between $2.74 to $3.30 per watt. 1,2,12 This figure includes the solar panels, the installation, and other expenses. Using these numbers, an average-sized 8-kilowatt residential solar system would cost between $21,900 – $26,400.

How much does a solar panel installation cost?

Installation charges typically range from 20% to 30% of the total system price. Professional installers follow local restrictions and optimize panel placement for best efficiency. The small size of the excellent solar panel system makes installation easier, lowering labor time and associated expenses.

What is the cost of a solar system?

The cost of a solar system can vary depending on the size of your project. For a small DIY solar project with a few panels, expect to pay around $200 to $350 per panel (between $0.80 and $1.40 per watt).

How much do commercial solar panels cost?

Generally, installing solar panels on businesses costs a bit less per watt because the systems are larger, but the total costs will be higher. In 2025, the average cost for commercial solar panels is just about $2.00 per watt. There is a lot to consider when figuring out how much you’ll spend on a solar installation.

How much does solar cost per square foot?

The average system cost only drops by $1,000 and the cost per square foot increases to $12.83. Installing less solar will lower your cost but on a non-linear basis as there are a lot of fixed costs for installers to design, permit, and install your system.

How much does solar cost per watt?

For reference, the national average cost of solar panels is $3.03 per watt. Solar rebates help make solar more affordable by directly lowering the upfront cost of a solar installation. If you have access to solar rebates, consider yourself lucky! They are few and far between these days.