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，用于建模和评估FWE系统的需求和供应方面，并通过关联视图捕捉它们的相互依赖性，从而为城市地区（城市和周边城市地区）的能源、水和食品供应提供可持续和高效的解决方案。FWE-Nexus概念将作为确保可持续利用和管理方面的一致解决办法的中心办法。城市的人均资源消耗较高，但人均影响较小。在城市FWE系统之间的各种相互作用效应中，选择的效应被证明是非常重要的，因为它们在捕捉FWE相互联系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使用，海水淡化以在干旱地区生产地下水，废水处理和再利用用于植物灌溉（城市内部）和肥料生产；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，以反映不同的社会经济和气候特征，并在整个FWE供应链中解决本地和远程资源使用问题。从目前的情况出发，与当地利益相关者和城市政策制定者共同设计，在反映所考虑城市未来社会经济和技术发展前景的一致情景的基础上，预测城市FWE需求和供应的未来演变。此外，还将讨论七个选定的可持续发展目标，并确定现有的权衡和协同效应，以确保包容性的可持续城市FWE战略。将分析设想结果，以确定可能的改进实施措施。在与利益相关者和决策者共同创造的过程中，将制定城市地区可持续FWE战略和治理的政策指导方针。

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.