Solar ___ (6)
(Other definitions for system that I've seen before include "Body of doctrine - method of procedure" , "Network" , "Method of organisation" , "coherent plan" , "Routine" .)
(Other definitions for flare that I've seen before include "Burn with sudden brightness" , "Blaze with sudden irregular flame" , "Warning light" , "Feral kind of sudden activity" , "Blaze in feral manner" .)