Fig. 4: The contribution of different energy types and activities to household.
From: Unclean but affordable solid fuels effectively sustained household energy equity

a total energy consumption (1 EJ = 1018 J) and (b) cost (1 RMB ≈ US$ 0.15 in 2017) in China in 2017. The ring diagram distinguishes between rural and urban contributions. For both categories, the outer rings depict the proportions of different activities, including cooking, heating, and other. Within each activity, the inner rings illustrate the proportions of different energy types, including coal, biomass, liquefied petroleum gas and natural gas (LPG/NG), electricity, and thermal energy in central heating. All proportion values are based on national totals. Data for Hong Kong, Macao and Taiwan province are not included. Source data are provided as a Source Data file.