LOCALITY will implement local, innovative, and sustainable value chains, supporting the interaction of the algae value chain actors with relevant waste stream producing industries. Three regional ecosystems will be strategically developed in key regions considering strong and active business on which circularity and sustainability will be improved by the reutilization of wasted nutrients for algae cultivation. These ecosystems will be positioned in the Baltic and North Sea bordering countries but multi-perspectively supported by other R&D and industrial experienced partners in sustainable algae production. The biomass will be processed using a biorefinery approach and raw and treated ingredients applied in the food, aquafeed, agriculture, and textile markets. An integrative methodology involving R&D partners, industry, and SMEs will work in each market sector to develop innovative and sustainable algae-based products. The consumer readiness for the designed products will be assessed, and significant constraints and legal barriers will be identified. Those will be evaluated and integrated into the business model to prepare a successful market implementation and exploitation of the developed products. A dissemination and communication plan for maximum outreach to all relevant stakeholders will be implemented. The designed products will gain a strong position in the European marketplace in the coming years.