Target-oriented Benchmarking of Regional Building Energy Consumption Based on the Lorenz Curve

Abstract

For the purpose of building energy efficiency, the regional building energy benchmarking is indispensable for a district at planning stage. In this paper, a new approach is proposed by the combination of quota-level analysis and Lorenz curve, instead of the traditional simulation or coarse estimation by indicators. Firstly, the cumulative probability method was conducted to achieve a quota-level table, based on the data from State Grid and field surveys of 38 hotel buildings in the city of Hangzhou. At the same time, the Lorenz curve was introduced to de-scribe the distributed inequality of regional energy consumption. Finally, together with other planning parameters, the regional energy benchmarking was accomplished by accumulation between the given upper and lower EUI limitations along with the Lorenz curve. It should be noted that the pre-set EUI restrictions based on the quota-level analysis can directly represent the requested targets of building energy efficiency at planning stage.