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. Solar panels can lower your electricity bill by 75% or more, but the upfront investment is significant. To find the most up-to-date solar panel costs in 2025, we compared research from the U. Department of. The cost of installing solar is far less intimidating when you understand the various components, how savings are generated, and different ways to lower your cash outlay through financing. In this article, we'll explore: Do solar panels really save you money? As always, our goal is to empower you. Solar panel costs have dropped dramatically over the past decade, making residential solar more accessible than ever.