Test@Sea, a project consortium consisting of POM West Flanders, VLIZ, Sirris, VUB, UGent and De Blauwe Cluster, creates the opportunity for the offshore energy sector to continue to innovate, in order to strengthen the sector. A central element in this project, through targeted investments, is to provide an answer to the growing, and gradually more advanced, demand for fit-for-purpose testing and demonstration infrastructure at sea. To this end, a higher level of service quality is achieved in the field of guidance and support in, among other things, engineering and construction, project management and legal matters. The associated expansion of test infrastructure will be realized in an investment window, including an upgrade of the existing Blue Accelerator to continue to meet the growing demand.