A single solar panel costs between $120-$315 for the equipment only, or $1,000-$1,200 when professionally installed. Average price of solar modules, expressed in US dollars per watt, adjusted for inflation. Data source: IRENA (2025); Nemet (2009); Farmer and Lafond (2016) – Learn more about this data Note: Costs are expressed in constant 2024 US$ per watt. 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. 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. This typically translates to about $2. 50 per watt of installed capacity (more on price per watt below). Department of Energy (DOE) Solar Energy Technologies Office (SETO) and its national laboratory partners analyze cost data for U. solar photovoltaic (PV) systems to develop cost benchmarks. These benchmarks help measure progress toward goals for reducing solar electricity costs. Solar panels cost $0. Panels can cost as low as $1,890 and as high as $13,600.
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