Build Solar Water Heater

since global warming and the need for more greener energy like wind power increases, is it really possible you can make lots of money by buying these companies now that are worth virtually nothing, and wait until the world gets the need of renewable energy? (buying shares of stocks). Thanks

Im thinking of going to school to get an associates of applied sciences degree in renewable energy. I was just wondering what kind of money someone with that would make.

I need to know how much money it would cost to supply the entire united states with kinetic, wind, solar, and hydro-electric energy THANKS!!!!