FLEXI-GRID will demonstrate cutting-edge technologies and innovative flexible markets enabled by advanced cross-platforms for local energy exchanges and providing flexibility to distribution system operators in order to ensure a secure, stable and affordable operations of electrical distribution grids for de-carbonising energy systems with high shares of renewables (up to and beyond 100%). By leveraging digital, smart grid technologies, IoT, blockchain, FLEXI-GRID will provide a transparent data management platform by broadcasting real-time information on the conditions of the network to optimise the observability of the grid and market functioning. The project’s geographical coverage, with four test sites in Bulgaria, Sweden, Switzerland, and Turkey, allows validating solutions in multiple market conditions, and ensures post project scalability, knowledge transfer, scaling and replication. The key demonstration activities include i) grid monitoring, control and flexibility intervention; ii) local energy exchanges and provision of grid services; iii) blockchain based energy exchange and provision of grid services; iv) flexibility measures and grid services provided by local energy storage, Power to Gas, Vehicle to Grid, and local renewable resources. It is the first time that small and medium size DSOs show interest to test innovative tools and solutions. The project is strengthened by collaborating with Canada and backed by financial institutions to ensure successful commercial paths of innovative solutions.