Without a doubt its going to be science/tech majors like computer science but if you really think about it, its going to be nearly all majors. Its up to the student if they want to make a difference in that field
Solarpunk is a direction so even if a major does not have advances that heads towards solarpunk you or anyone can get into that discipline and perhaps come up with inventions or research that does just that
not that easy if you play games unfortunately