Welcome to the 2nd Asian Wave and Tidal Energy Conference (AWTEC) at Tokyo. This is following to the first ones in Jeju Island, Korea. It is our great honor and pleasure to have all of you at the occasion of Grand Renewable Energy 2014, which is one of the world-largest conferences which cover all kinds of renewable energy such as PV and on-land wind turbines with a slogan “Advanced Technology Paths to Global Sustainability”. AWTEC has been established to be the regional conference affiliated to the European Wave and Tidal Energy Conference (EWTEC) series, which has been running since 1979. The establishment of AWTEC is to facilitate the trans-national and regional sharing of knowledge and understanding from research activities being undertaken in the development of wave and tidal renewable energy systems, their interactions with the environment and the identification of barriers to be addressed in order to establish and marine renewable energy industry. AWTEC focuses on wave and tidal energy together with other ocean energy aspects of marine renewable energy technologies and recent activities. This second conference includes not only wave and tidal but also ocean thermal and floating wind turbines as well, because their research activities are very hot in Japan now. The conference aims to facilitate and provide opportunities for researchers, engineers, policy makers and stakeholders to exchange knowledge by profound discussions and recent research presentations and promote international and multi-disciplinary collaboration.