Imo, the future of green energy isn't mass production, but on small levels. Making solar and wind affordable and feasible for homes and businesses to install for their own use.
Won't happen until the aesthetics and initial investment/rate of return issues are addressed better. There is progress in the right directions, but it is still a ways off.
Buildings accounts for a very high percentage of the nations energy in keeping the lights on and the heat/ac running. Making products that can be incorporated into the building itself that will help offset this at the building level is where the alternative energy innovators should focus, imo.