Within Horizon Europe, the Built4People partnership (B4P) aims, among other objectives, to connect to a set of national or regional Innovation Clusters in view of maximizing innovation impacts. The NEBULA projects will build upon this B4P and the New European Bauhaus initiative to activate and nurture a network of B4P Innovation Clusters, by implementing: – Improved visibility, adoption and uptake of innovative solutions that are in line with the New European Bauhaus thanks to increased awareness on benefits from innovation and better access to co-financing – Intensified, cross-sectorial and interdisciplinary peer-learning from front runners as well as cross-border cooperation and networking, – preparation for the long-lasting activities of the network of B4P Innovation Clusters and the integration of the next clusters. This project will therefore accompany a first batch of existing and emerging clusters to increase their maturity along five dimensions: full value-chain coverage; cross-sectoral integration; combined local and national/EU networking; cross border connections; and access to testbeds and demo spaces such as pilot buildings and living labs. NEBULA will support these clusters through ‘maturity push’ activities including peer learning on New European Bauhaus concepts, support to open innovation, business & finance help desk, match-making and promotional events. A minimum of 5-7 clusters will be supported by NEBULA, some already identified being part of the consortium. At least 1 of them will reach full maturity on the 5 dimensions listed above, thus becoming a B4P Front runner, model for replication. NEBULA consortium, that involves two contractual partners of the B4P partnership, will elaborate a Strategic Replication Plan to reach the contractual target of 10-15 B4P Innovation Clusters by 2028.