JPI Urban Europe SUGI - Formulating sustainable urban FWE strategy by optimizing the synergies between food, water and energy systems

Sunex项目建立了一个先进工具的综合建模框架，以对FWE系统的需求和供应方进行建模和评估，并通过支持城市区域--城市及其周边地区--能源、水和食物供应的可持续和有效解决方案的关联性观点来捕捉它们之间的相互依存关系。FWE-Nexus概念将作为确保可持续使用和管理的协调一致解决方案的中心方法。城市显示，单位面积的资源消耗很高，但人均影响很小。在城市FWE系统之间的各种相互作用效应中，选定的效应被证明是非常重要的，因为它们在捕捉FWE相互关联和预期的协同效应最大化方面具有重要意义。这意味着抽取地下水用于灌溉和其他市政用途，在干旱地区进行海水淡化以生产饮用水，废水处理和再利用用于植物灌溉(城市内部)和化肥生产；以及将食物垃圾转化为沼气和有机肥料(例如用于城市园艺)。Sunex将在柏林、布里斯托尔、多哈和维也纳等城市应用，反映不同的社会经济和气候特点，并解决FWE整个供应链中的本地和远程资源使用问题。从目前的情况出发，在与当地利益攸关方和城市政策制定者共同设计的基础上，将根据反映所考虑城市未来社会经济和技术发展的一致情景来预测城市燃料需求和供应的未来演变。此外，还处理了七个选定的可持续发展目标，并将确定现有的权衡和协同作用，以确保包容性、可持续的城市可持续发展战略。将对设想结果进行分析，以确定可能的改进执行措施。在与利益攸关方和决策者共同创建的过程中，将为城市地区设计可持续的可持续清洁发展战略和治理制定政策指导方针。

The SUNEX project establishes an integrated modelling framework of advanced tools to model and assess the FWE systems' demand and supply sides and capture their interdependencies through a nexus view that endorses sustainable and efficient solutions for energy, water and food supply for urban regions - of city and surrounding peri-urban areas. The FWE-Nexus concept will serve as central approach to ensure coherent solutions on sustainable use and management.Cities show high resources consumption per area, but small per capita impacts. Among the diverse interaction effects between urban FWE systems selected effects prove to be of high importance due to their significance in capturing the FWE interlinkage and the expected synergies maximization. This implies groundwater pumping for irrigation and other municipality use, water desalination to produce table water in dry zones, waste water treatment and reuse for plants irrigation (inside cities) and fertilizer production; and food waste converting to biogas and organic fertilizer (e.g. for urban gardening). SUNEX will be applied in the cities Berlin, Bristol, Doha and Vienna, reflecting different socio-economic and climate characteristics and addressing local and remote resource uses among the full FWE supply chains. Starting from the current situation and in co-design with local stakeholders and urban policy makers, future evolution of urban FWE demand and supply will be projected based on consistent scenarios reflecting the prospective future socio-economic and technological development of the considered cities. Moreover, seven selected SDGs are addressed and existing trade-offs and synergies will be identified to ensure inclusive sustainable urban FWE strategies. The scenario results will be analysed to identify possible implementation measures for improvement. In co-creation with stakeholders and decision makers policy guidelines for the design of sustainable FWE strategies and governance for urban areas will be formulated.