Using empirical research, ICLEI is developing a framework and tools to assess changes in food-water-energy nexus, their related trade-offs and the building of innovative capabilities in cities for developing innovative solutions to the food, water and energy nexus and manage green and blue infrastructure at the urban level. These frameworks and tools aim to guide urban governance on the food-water-energy nexus, delivering innovative solutions to mitigate climate change and biodiversity loss, while advancing development goals from food security to job creation across cities worldwide. The project assesses the changes in trade-offs of food-water-energy nexus (FWEN) in green and blue infrastructure (GBI) and their association with spatial planning and governance in nine cities using empirical cases. These cases provide a better understanding of the barriers to, and enablers of, innovative and integrated FWEN approaches using GBI at different scales; and demonstrate common features across diverse interventions and cities. The cases have set a foundation for a virtual training of local government officials and urban practitioners on implementing nexus.