I’m looking for different majors to pursue for college and, for fun, I decided to stray away from the ordinary boring ones.
I figured solar/energy-saving power is probably going to become a big business, but what majors are there to pursue?

I’d just like some ideas, but if I may ask try to keep it less general. (For example, please don’t simply say “the sciences” unless you may be able to briefly explain any branch of science in particular!)

I'm looking into companies that are researching solar/renewable energies, particularly in California. What companies are doing a lot of R&D in this area?
I'm looking for a career. I'm about a year away from my BS in Electrical Engineering and I'm interested in a job in renewables R&D after graduation.