To find the most up-to-date solar panel costs in 2025, we compared research from the U. Department of Energy and prices from 54 retailers and manufacturers for popular solar panel brands. This chart refers to the average cost range across all common solar system . . 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. Your actual cost depends on your home's energy needs, roof characteristics, location and other factors, all of which we'll break down in. . Solar panel costs range from $16,600 to $20,500 for the average 6. 50 per watt installed, making the technology more accessible than ever before. solar photovoltaic (PV) systems to develop cost benchmarks. In this article, we'll explore: Do solar panels really save you money? As always, our goal is to empower you. . Switching to solar power is one of the smartest investments you can make for your home or business, but understanding the costs can feel overwhelming. When I first looked into solar energy, I found myself asking, “What exactly am I paying for?” From panels to installation to long-term savings. .