Their study has permitted them to classify the calculation codes into two categories, corresponding to two types of problems encountered in studies on CSP technologies: the first category is about the optimization codes used to design installation projects such as HFLCAL, UHC-RCELL, or (WIN) DELSOL and the second one represents the performance analysis codes to assess optical performances of a
given installation like FIAT LUX, MIRVAL, UHC-NS or IH, or SOLTRACE.