How do I avoid copy/pasting so many Grasshopper components?

Is it a way to apply the period slicing to many of the EPW values at a time, instead of having 10 different ApplyPer components? Can they all be combined into one “stream” and sliced altogether?

Just plus a list of EPW files into whatever script you are using. Grasshopper automatically takes care of iterating over the list for you with just one component so that you don’t have to copy/paste them.