Hi Paul,
I could not quite adapt the Power Tower Field and Storage Optimization with SamUL to work for Parabolic trough plants. The basic error is that PtOptimize() does not work when the active case is a parabolic trough plant. Is there a way of using the same or any other optimization package for Parabolic plants? Right now, I am going ahead with parametric analysis. I have posted a new question regarding that.