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  • As of 2023, the average cost of solar panels in the United States ranges from $2.50 to $3.50 per watt, depending on various factors including location, the type of solar panel, and the complexity of the installation. For a typical residential solar system, which averages around 6 to 10 kilowatts (kW), this translates to a total cost ranging from $15,000 to $30,000 before any incentives or rebates.