China wants to put a solar power station in orbit by 2050, a feat that would make it the first nation to harness the sun’s energy in space and beam it to Earth. - NBCNewsMACH
“We’re seeing a bit of a resurgence now, and it’s probably because the ability to make this happen is there, thanks to new technologies,” said John Mankins, a physicist who spearheaded NASA efforts in the field in the 1990s before the space agency abandoned the research.
, experts say it could become a key way to meet global energy demands — particularly in Japan, northern Europe and other parts of the world that aren’t especially sunny.Floating solar farms: How 'floatovoltaics' could provide power without taking up valuable real estate The swarming satellites would be covered with the photovoltaic panels needed to convert sunlight into electricity, which would be converted into microwaves and beamed wirelessly to ground-based receivers — giant wire nets measuring up to four miles across. These could be installed over lakes or across deserts or farmland.
“State-of-the-art photovoltaics are now maybe 30 percent efficient,” said Terry Gdoutos, a Caltech scientist who works with Hajimiri on the space-based solar research “The biggest challenge is bringing the mass down without sacrificing efficiency.”
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