Open PV Project: This dataset provides information on the installed photovoltaic (PV) systems in the United States. The data can be downloaded from. . 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. NLR's PV cost benchmarking work uses a bottom-up. . The data is collected by NREL and is available for download at https://data. Department of Energy (DOE) Solar Energy Technologies Office (SETO) and its national laboratory partners analyze cost data for U.
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