Unlike fusion, neither solar nor wind energy scientists have any really hard problems to solve. Engineering problems sure, bot not scientific problems. Fusion r

Unlike fusion, neither solar nor wind energy scientists have any really hard problems to solve. Engineering problems sure, bot not scientific problems. Fusion research is about creating a stable ministar on earth, since normally stars are self-gravitating and in vacuum, this turns out to be a rather hard problem. The basic principle behind solar power is understood since 1905 and wind mills have been used since forever.