The Wuppertal Institute analyses in co-operation with adelphi the potentials of Tunisian enterprises to enter into manufacturing of components for solar energy technologies. Its objective is to identify key industries and companies that could significantly contribute to the value chains of photovoltaic (PV), concentrated solar power (CSP) and solar water heating systems (SWHs). The value chain analysis of these three technologies gives insights into the industries that are needed for certain manufacturing processes. A survey of 100 to 150 enterprises from all relevant sectors helps to assess the companies' technological and financial capacities. Based on the results of the value chain analysis and the survey, the project partners will then develop recommendations and an action plan for an innovation strategy for solar energy in Tunisia.