We have listed some of the most critical factors for you below. In addition to the cost per watt for each solar panel, other factors influence the overall cost of a solar power system. ![]() However, if you request specific brands of inverters or batteries, they may come at a premium. Most solar companies will include these components in your solar system’s design. Residential solar systems also typically require a battery to store energy and an inverter, which converts the variable direct current (DC) output of your PV solar panel s into alternating current (AC). The installation of a larger system will naturally increase labor costs. So, for example, if you purchase a 6kW monocrystalline solar panel system for $9,000, then a solar installation company will likely charge approximately $18,000 to $27,000 for the system and the installation, combined. Installation costs range between 100% and 200% of the cost of the solar panel system itself. They tend to cost around $1 to $1.50 per watt. Thin-film: Thin-film solar panels are less popular for residential solar systems.The average cost for polycrystalline solar panels is $0.90 to $1 per watt, or $5,400 to $6,000 total. However, they feature a lower efficiency rate than mono panels, at an average of 20%. Polycrystalline: Polycrystalline panels are a more cost-effective option up front.Therefore, a standard 6kW system costs between $6,000 and $9,000. The average cost for monocrystalline solar panels is $1 to $1.50 per watt. Monocrystalline : The most popular solar panel on the market today, monocrystalline panels offer the highest efficiency rate, at an average of 24%.Below is a breakdown of the three most popular types of solar panels and their average price. The type of solar panel you order will influence your total price. *Based on a May 2019 report Types of Solar Panels ![]() A solar installation company will charge a combination of labor costs and a price per watt for each solar panel. The total cost of a solar system includes solar panel prices, which vary in price by brand and type, installation labor, and additional equipment. * Overall, you should expect to pay anywhere between $10,000 and $24,000, depending on your system size and location. The Solar Energy Industries Association (SEIA) estimates that the national average cost for a typical 6-kilowatt (kW, or 6,000 watts) residential rooftop solar system is roughly $18,000 before any federal tax credits or local incentives. Average Cost of 5kW System (After Tax Credits)*
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