The present invention relates to an apparatus and method for examining economical efficiency of a distributed solar power plant. An apparatus for examining economical efficiency of a dispersed solar power plant according to the present invention includes: a specification input unit for receiving specification information used for examining economy of a distributed solar power plant; A prediction information generation unit for generating economy prediction information based on the specification information and the history information stored in the database; And economic feasibility study section that examines the economic feasibility of the photovoltaic power generation business on the basis of the economic forecasting information, and the economic feasibility prediction information includes the price, grid limit price, solar power generation amount, And investment cost of the photovoltaic power plant.
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