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.

Digitisation in existing buildings is not as widespread as in other sectors. A consequence is that buildings owners and occupants have generally a limited understanding of their building as an energy system. Improving the energy efficiency of existing buildings can and should be achieved through deep renovation. In comparison, smart technologies can increase the efficiency and the flexibility of buildings in a shorter term and with much less investments. The domOS project addresses the smart building sector through two axes. In the first axis, technology, guidelines for an open, secure, multi-service Internet of Things (IoT) ecosystem for smart buildings are defined: in-building gateways, which connect to local smart devices and smart appliance of any type, IoT platforms and applications operated by different parties can be integrated seamlessly. Buildings owners can enforce privacy rules, they can allow / forbid access to any measurement or control point. The second axis deals with the development of smart services. They increase energy efficiency of space heating (heat pumps, district heating, gas boilers) thanks to innovative control algorithms making use of smart sensors and smart heating appliances. Automated advice services provide concise and sound information on the building energy. Buildings become active nodes of an electricity grid or a District Heating grid. These two axes are present in each of the five demonstration sites of the domOS project: The Sion (CH) and Paris (F) pilots test smart services related to electricity. In Aalborg (DK), control techniques applied to space heating for buildings connected to a Distributed Heating grid reduces consumption and lower costs, CO$_{2}$ emissions and system load. In the Neuchâtel (CH) and Skive (DK) demonstrators, closed-loop control minimises temperature at the output of the heating system, thus increasing efficiency and reducing losses.