This paper describes the results of a literature survey and comparative analysis of unit energy consumption data in the commercial sector. First, we collected 59 documents, including survey reports by administrative agencies, research papers by individual researchers, estimates based on existing surveys, and energy supply statistics. Then, we compared the data and clarified the consistency and variation. To determine the factors causing the variation, we used a dataset on completed buildings, compiled by the Japan Building Mechanical and Electrical Engineers Association.
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