Household Energy Demand Evolutionary Trace: What Happened to the Fringe of Xi´an City?

This paper delved into Chinese household energy demand evolution path. With human engineering as the analytical theoretical basis, energy demand is divided into three categories: life maintain, spirit maintain, and environment maintain. We introduce LUX (unit living area light intensity) as the uniqueness index into analytical framework. The results show that energy demand presents three evolution states: rural, suburbs and city. From macro-perspective, this change, however, comes from energy demand preference.