The project promotes industrial symbiosis, a concept for sustainable regional development, across the Baltic Sea region. Industrial symbiosis means to connect companies from different industries in order to use one company’s waste, in the form of e.g. energy, ingredients or materials, as a resource for the next company. The project establishes peer-to-peer exchange for industrial symbiosis practitioners. It develops new business and finance models and sets up the BSR Industrial Symbiosis Council as a platform for dialogue and policy learning.