To support design of photovoltaic power generation facilities that are at a low cost and generate much electric power. A learned model 42 is created by learning reference data 36 that includes site data 16A, 16B, 16C for reference photovoltaic power generation facilities 12A, 12B, 12C, panel layout data 22A, 22B, 22C including data on installation angles of reference photovoltaic panels 20A, 20B, 20C, panel specifications data 24A, 24B, 24C, sun direction data 26A, 26B, 26C, weather data 32A, 32B, 32C, and power generation data 34A, 34B, 34C. A design support apparatus calculates a cumulative amount of power generation for a predetermined period by processing, for each of a plurality of pieces of provisional panel layout data on photovoltaic panels having different installation angles from each other, the relevant piece of the provisional panel layout data and input data, by the learned model 42, and extracts a piece of the provisional panel layout data in which the cumulative amount of power generation is maximum.
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