50 per watt on average but can run from $0. Panels can cost as low as $1,890 and as high as. . Solar panels cost $0. Data source: IRENA (2025); Nemet (2009); Farmer and Lafond (2016) – Learn more about this data Note: Costs are expressed in constant 2024 US$ per watt. Global estimates are used before 2010; European market. . NLR analyzes the total costs associated with installing photovoltaic (PV) systems for residential rooftop, commercial rooftop, and utility-scale ground-mount systems. This work has grown to include cost models for solar-plus-storage systems. NLR's PV cost benchmarking work uses a bottom-up. . Weekly spot price report for 182mm modules will be based on the 182*182-210mm format from June 2024 onwards due to the slim price gap among varying formats. Prices for Chinese project will be prices for TOPCon modules instead of PERC from April 2024 onwards.
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