Abstract
We conducted a detailed analysis of existing survey documents on specific energy consumption in the commercial sector in Japan. This research focused on four factors affecting specific energy consumption: secular changes, district heating and cooling, primary energy conversion factor for electric power, and survey sample size. Analysis in this research also employed completed facility data (ELPAC data). This enabled use of data for individual buildings. The results revealed the degree to which specific energy consumption can vary due to these factors. However, actual variation in the documents was too large to be explained by these general factors, and thus it will be essential in the future to examine the reliability of each document and conduct proper document selection when using specific energy consumption data.
