Comparison of energy consumption per unit floor area among retail categories based on the database of energy consumption for commercial buildings (DECC)

Authors gathered and investigated annual energy consumption of 4,194 retail facilities. The retail facilities were classified by the retail categories into department store, general merchandise store, grocery store, garment store, household merchandise store, home center, drag store, convenience-store, shopping center and specialized store. The average of total floor area and annual primary energy consumption per unit floor area were compared among the retail categories. Except the combination between department store and shopping center, these retail categories showed a significant difference in the total floor area and/or annual energy consumption per total floor area. This result implies that classification by retail category contributes to understand the characteristics of energy consumption.