Abstract
Introduction of the renewable energy needs to be strongly carried out, in order to avoid too much dependency on nuclear power generation, and to promote for discharge reduction of greenhouse gas. As Japan has large ocean exclusive economic zone (EEZ) compared to small land area, Japanese ocean renewable energy potential is important. Up to present, among various ocean renewable energy potential, ocean wind-generated electricity is supposed to be the most practical one to be realized in near future. This session introduced various field study in Japan aiming for offshore wind farm construction, and discussed on future problems to be solved.