solar cost per square foot in 2025: $6 – $12 after the 30% federal tax credit. The most accurate pricing metric is still cost per watt, but per-sq-ft estimates are helpful for. Average U. Your actual cost depends on your home's energy needs, roof characteristics, location and other factors, all of which we'll break down in. A single solar panel costs between $120-$315 for the equipment only, or $1,000-$1,200 when professionally installed. The final price depends on panel type, wattage, brand quality, and whether you're buying individually or as part of a larger system. Understanding individual solar panel costs. The cost of a residential solar installation is a blend of physical hardware, the labor to install it, and a variety of administrative expenses known as soft costs. Check with a local pro for your specific job. This work has grown to include cost models for solar-plus-storage systems. NLR's PV cost benchmarking work uses a bottom-up.