“…Few studies have employed panel data (e.g., Mekonnen and Köhlin, 2008). Regarding the studies on China, most of them are based on aggregate statistics, on surveys conducted in certain provinces or counties, or on rural households (ESMAP, 1996;Wang and Feng, 1997;Chen et al, 2006;Peng et al, 2010;Zhang and Kotani, 2012). Based on aggregate statistics and descriptive statistical tests, Cai and Jiang (2008) tested the energy ladder hypothesis by comparing the energy consumption pattern of rural households with that of urban households.…”