Price of installing solar photovoltaic panels

How much does a solar panel installation cost?

EnergySage reports that the average cost of a 10.8 kW solar panel installation is around $29,926 before federal tax credits, which reduces to $20,948 after the credits are applied. This source also highlights that the cost per watt averages about $2.75 across the US, though this can vary by state and other factors.

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 do solar panels cost per watt?

Expect the cost per watt to be between $2 to $3. As of publishing, the average cost per watt is $2.84. Solar panels typically pay for themselves within 5 to 15 years. It all boils down to how much you’re paying for each unit of power, according to Robert Flores, a solar expert at The University of California, Irvine’s Clean Energy Institute.

How much does solar cost?

With the federal solar tax credit, this cost can be reduced to about $21,000. Local incentives can further lower the cost. The cost varies among states, with typical costs ranging from $19,973 in California to $39,250 in Alabama before federal tax credits.

How much does a solar PV installation cost per kilowatt?

The mean average cost per kilowatt of a small solar PV installation (0-4kW) is above £2,000 for the first time since these records began in 2013/14. Prices for larger solar installations (4-10kW) increased even more dramatically - by 31% since 2021/22.

How much does a solar inverter cost?

The cost of an inverter depends on its size and efficiency, but these devices typically cost between $1,000 and $3,000. Mounting system: This is what holds rooftop solar panels in place. Costs vary depending on the type of solar installation, but it generally costs between 7 and 20 cents per watt.