Overall, you can expect to spend anywhere from $15,000 to $45,000 for a solar roof panel installation or replacement. You can find out more costs by material on our blog here before deciding what to go with. You can also contact our pro roofers at First American Roofing today!. Solar panels cost $1,200 per panel, depending on the type of panel, home size, energy usage, and labor. Clicking “Get Your Estimate” submits your data to All Star Pros, which will process your data in accordance with the All Star Pros Privacy Policy. Check with a local pro for your specific job. Solar panel installation means adding a photovoltaic (PV) energy system to your home, mounted on your roof or property. System size, panel type, and labor needs are the biggest cost drivers. . While the basic components of any rooftop solar system -- panels, inverters and optional batteries -- stay the same, the overall cost of solar panels can be different for each home. When calculating the overall cost, you need to take a look at the size of the system, the cost of labor and. . Solar panel installation costs a national average of $18,180 for a 6kW solar panel system for a 1,500 square ft. The price per watt for solar panels can range from $2. 50 and largely depends on the home's geographical area. Residential solar panels are usually sized between 3 kW and 8. . If you own a 2,000-square-foot house, expect to pay around $29,000 for a complete solar system before tax credits, or about $20,300 after taking the federal tax credit. How big your home is and how much electricity you use are the main things affecting your cost. A small 1,000-square-foot condo. . How much power does solar roof generate? Solar roof shingles cost $42,000 to $80,000 on average before tax credits. Solar shingles. .