In order to meet local, national and international CO2 emission targets, Marine Renewable Energy will need to rapidly move through the demonstrator phase to the viable technology stage. Ocean Science has a large role to play in this development with contributions ranging from resource assessment, site characterization, installation planning and impact monitoring. This session seeks contributions from researchers of all disciplines with interest in oceanographic applications to the development of Marine Renewable Energy. We especially welcome contributions from projects either in pilot study or fully operational phase which relate to observational methodologies or results that demonstrate the impact of existing sites on physical processes and the biological system.