As of 2025, the average cost of residential solar panels in the U. This typically translates to about $2. 50 per watt of installed capacity (more on price per watt below). . Most homeowners spend between $12,600 and $33,376 to install a complete residential solar system in 2026, with the national average at $19,873 before incentives. The total price depends on your system size, location, roof type. . This could increase costs by nearly $9,000 for a typical system, making 2025 potentially the last year for maximum savings. Combined with the tax. . Get solar power system costs based on your location, roof, power usage, and current local offers. Published: February 2026 Solar panels cost about $21,816 on average when purchased with cash or $26,004 when purchased with a loan for a 7. Their 12-kW example prices are $29,649 before and $20,754 after the federal credit, and they explicitly flag that the 30% credit ends for new residential. .
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