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Energy Reduction Effect of the South-to-North Water Diversion Project in China

Authors:

Yong Zhao1, Yongnan Zhu1, Zhaohui Lin2,3, Jianhua Wang1, Guohua He1, Haihong Li1, Lei Li4, Hao Wang1, Shan Jiang1, Fan He1, Jiaqi Zhai1, Lizhen Wang1& Qingming Wang1

1 State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing, 100038, China. 2 International Center for Climate and Environment Sciences (ICCES). Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China. 3 Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing, 210044, China. 4 State Nuclear Electric Power Planning Design and Research Institute, Beijing, 100094, China.

Abstract:

The North China Plain, with a population of approximately 150 million, is facing severe water scarcity. The over-exploitation of groundwater in the region, with accumulation amounts reaching more than 150 billion m3, causes a series of hydrological and geological problems together with the consumption of a significant amount of energy. Here, we highlight the energy and greenhouse gas-related environmental co-benefits of the South-to-North Water Diversion Project (SNWDP). Moreover, we evaluate the energy-saving effect of SNWDP on groundwater exploitation based on the groundwater exploitation reduction program implemented by the Chinese government. Our results show that the transferred water will replace about 2.97 billion m3 of exploited groundwater in the water reception area by 2020 and hence reduce energy consumption by 931 million kWh. Further, by 2030, 6.44 billion m3 of groundwater, which accounts for 27% of the current groundwater withdrawal, will save approximately 7% of Beijing’s current thermal power generation output.

Citation:

Yong Zhao, Yongnan Zhu, Zhaohui Lin, Jianhua Wang, Guohua He, Haihong Li, Lei Li, Hao Wang, Shan Jiang, Fan He, Jiaqi Zhai, Lizhen Wang, Qingming Wang, Energy Reduction Effect of the South-to-North Water Diversion Project in China, Scientific Reports, 2017, 7:15956, doi:10.1038/s41598-017-16157-z.


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