2 kW solar panel system costs $21,816 before incentives or $3. 03 per watt of solar installed. Department of Energy (DOE) Solar Energy Technologies Office (SETO) and its national laboratory partners analyze cost data for U. These benchmarks help measure progress toward goals for reducing solar electricity costs. . Average price of solar modules, expressed in US dollars per watt, adjusted for inflation. Data source: IRENA (2025); Nemet (2009); Farmer and Lafond (2016) – Learn more about this data Note: Costs are expressed in constant 2024 US$ per watt. Global estimates are used before 2010; European market. . Solar panels can lower your electricity bill by 75% or more, but the upfront investment is significant. Buying in bulk by pallet or container lets you lock in better prices per watt, simplify logistics, and get equipment from trusted brands in one. .
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