1). First parabolic trough commercial power plant based on direct steam generation; 2.) Solarlite Trough SL4600 a new generation of parabolic trough made of composite material combined with an efficient thin-glass mirror which reflects more than 95% of the sun radiation; 3.) The construction method allows island solutions and smaller solar thermal parabolic trough plants starting from 500 kWe. DUKE, Spain CompoSol Solarlite, Duckwitz / DLR TRESERT, Thailand Woltow, Germany Direct steam generation Solarlite has tested the DSG concept successfully in three pilot projects in Thailand and Germany. Solarlite’s adaptation of DSG concept is based on the following advantages: DSG concept is environment friendly and it avoids usage of flammable and environmental hazard materials The DSG allows significant reductions of the total investment costs and levelized electricity cost. With DSG a higher operating temperature will be achievable. The DSG concepts has already acceptance at financial institutes, the first power plant was financed. Direct steam generation 2.0 Flow path concept, development and testing In a joint research project known as “Duke” that was supported by the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety, Solarlite CSP Technology GmbH and the German Aerospace Centre tested a new version of direct steam generation. Project aim Investigation of the flow path concept under real conditions Demonstration of solar direct steam generation at 500 °C Detailed system analysis for debitable costing under consideration of the Solarlite collector SL 4600+ The Solarlite 4600 parabolic trough is a newly developed highly efficient product that can generate temperatures of up to 400 °C. Each panel has an aperture width of 4.6 m and is made of composite materials combined with an efficient thin glass mirror. This mirror reflects up to 95% of the sun’s radiation onto the receiver pipe positioned at the ideal focus of the parabolic mirror. Water passing through the receiver pipe is heated up by the concentrated reflected sun radiation and is converted into steam within a controlled process. A turbine generator produces electricity. Residual heat can be used for other applications such as seawater desalination or absorption cooling. The basic element of the Solarlite 4600 collector is the Solarlite composite panel which has a dimension of 2.3 m width and 1 m length. These panels are combined together to form 1 segment with a dimension 4.6 m aperture width and 12 m length. It is possible to connect 10 of these