Electricity portfolio innovation for energy security: the case of carbon constrained China

China’s energy sector is under pressure to achieve secure and affordable supply and a clear decarbonisation path. We examine the longitudinal trajectory of the Chinese electricity supply security and model the near future supply security based on the 12th 5 year plan. Our deterministic approach combines Shannon-Wiener, Herfindahl-Hirschman and electricity import dependence indices for supply security appraisal. We find that electricity portfolio innovation allows China to provide secure energy supply despite increasing import dependence. It is argued that long-term aggressive deployment of renewable energy will unblock China’s coal-biased technological lock-in and increase supply security in all fronts. However, reduced supply diversity in China during the 1990s will not recover until after 2020s due to the long-term coal lock-in that can threaten to hold China’s back from realising its full potential

Scenario analysis of tourism's water footprint for China's Beijing–Tianjin–Hebei region in 2020: implications for water policy

Based on the life cycle footprint analysis method, this paper undertakes a comprehensive assessment of tourism-related direct and indirect water consumption under four counterfactual tourism scenarios in China's Beijing–Tianjin–Hebei metropolitan region (Jing-Jin-Ji), which has been increasingly constrained by extreme water stress. Food consumption appears to have a major impact on the tourism water footprint (WF) such that high calorie-dominated diets are nearly five times more water intensive than vegetable diets for a typical foreign tourist. It is necessary to design specific policy to improve water-use efficiency in upstream agricultural production, in parallel with reduced high-calorie food intake in tourism products supply. Furthermore, transport mode is found to have significant impacts on domestic tourist WF due to the stark variation in water embodied in upstream fuel production and supply. Forecasts for tourism's WF under low and high scenarios suggest that tourism may account for a considerable proportion of total water use in Jing-Jin-Jiby 2020. Specifically, tourism patterns appear to be a determining factor influencing water consumption across different scenarios. It is argued that water policy needs to emphasise water-use efficiency to raise awareness of tourist WF by differentiating water prices for various purposes and segments of the tourism consumer market