
Henry E. Willsie identified the major weakness of all the previously built solar engines in their inability to overcome the intermittency problem of. . The nine operating SEGS plants have demonstrated the commercial nature of the Luz parabolic trough collector technology and have validated many of the SEGS plant design. . The basic component of the solar field is the Solar Collector Assembly (SCA). Each SCA is an independently tracking parabolic trough solar collector made up of parabolic reflectors or mirrors, the metal support structure, the. . A number of HCE failure mechanisms have been identified at the SEGS plants, with all of these issues resolved through the development of.