In this paper,the principles,development status quo and tendency of ocean thermal energy conversion(OTEC),wave and tidal current power generation in the world are described briefly.

• 最近几年,世界各国积极开发这种新能源并取得很大的进展,在此,简要介绍了当今世界海洋温差发电、波浪发电和潮汐潮流发电的原理,开发现状和展望。