Hi Nikitat1,
You should definitely look forward to applying in the coming round. 690 score is not a low score, especially in the context of your relevant profile for McCombs (which is a champion of energy management). I'd suggest starting the application process. Research the merits of their curriculum and speak to current students. Also, get in touch with the admission committee to better understand your fit. Also, take a look at other schools which specialize in energy courses.