This report aims at providing an overview of the supply chain of a number of renewable energy technologies. The report currently addresses the following technologies in detail: wind energy, geothermal energy and ocean energy but might be expanded at a later stage. In particular, the report focuses on the current market for renewable energy technologies and components and the position of EU companies and organisations as well as the EU's strengths and weaknesses. The main EU companies and competitors from outside the EU for each part of the supply chain or market segment are also presented.