Spaced Out: Is Solar Power From Satellites Achievable? By Keith Johnson in the Wall Street Journal

Space-based solar power is back in vogue these days, three decades after the U.S. government started toying with the idea as a way to get steady—if not cheap—power to remote battlefield locations. California utility PG&E just signed a deal with Solaren, another space-solar firm, to provide 200 megawatts of space-based solar power in 2016.

Solaren is confident it can meet the timeline, but has been sketchy about the breakthroughs it says can make that happen. PowerSat’s new patent directly addresses two of the biggest issues, though it’s still just a paper solution.