On average, the cost of a complete solar panel set varies widely depending on several factors, including the system size, quality of components, installation complexity, and regional differences in market prices. As of 2023, a standard residential solar panel installation ranges from $15,000 to $25,000 before any tax credits or incentives. This price typically covers a system size of 5 to 10 kilowatts (kW), which is suitable for most average-sized homes.