能源和水密不可分，在经济发展、能源紧张、水资源稀缺、气候变化等共同压力下，各国已开始从能-水关系（Energy-Water Nexus）这一新视角探究能水整合方案以减缓和适应气候变化。本项目拟利用基于不确定性分析的全生命周期评价方法计算我国能源生产的水利用系数和水生产的能源消耗系数，形成基础性能-水关系参数数据库；并在此基础上，设计能源系统与水系统的耦合机制，构建基于TIMES的能-水关联系统综合优化模型（TIMES-EWN），探索能-水关系与气候变化的内在联系；并以我国三类典型区域为例，在二维框架下设计面向节能、节水、减排等目标的政策组合，应用TIMES-EWN综合优化模型模拟得到不同政策组合下2010-2035年能源与水资源技术选择和潜力、碳排放、污染物排放，能源生产的水利用和水生产的能源消耗等，获得能-水系统的可持续发展路径，提出实现减缓和适应气候变化的能-水系统协同优化的政策建议。

Energy and water are interdependent and closely linked. Facing with pressures and challenges of fast economic development, shortage of energy supply, scarcity of water resource and climate change, the world has focused on joint energy and water solutions to mitigate and adapt climate change from a new perspective of energy-water nexus. This project firstly will measure the energy-water nexus by using Life Cycle Assessment (LCA) method which is based on uncertainty analysis, and establish an energy-water nexus database of energy for water and water for energy in China. Secondly, the project will explore the coupling mechanism of energy system and water system to build up an integrated optimization model of energy-water system on the basis of TIMES, i.e. TIMES-EWN model to illustrate the interacting principal among energy, water and climate change. Thirdly, taking three areas with different features in China as examples, this project will design the policy mix in a two-dimensional framework for achieving some targets, such as mitigating climate change, energy and water saving, emission reduction etc. This TIMES-EWN model will be applied under different policy mix to obtain technology choices and potential, carbon emissions, pollutant emissions, the energy consumption for water system and water consumption for energy system etc during 2010-2035. The sustainable development path energy-water nexus system will be obtained, and the policy implication on mitigation and adaption of climate change will be put forward as well.