A parabolic solar concentrator was developed for a 3 kWel Stirling Engine. Following an extensive concept study, the structure for prototypes and (pre-) serial production was worked out in collaboration with US engineers. Based on FE analysis as well as measurement data from built systems and components, analysis of the optical performance (ray tracing, errors during manufacturing and assembly) are carried out. Support and consultancy of the client during several steps of system development.