"Critics, though, have always pointed to multiple hurdles - to the cost of launching and assembling large solar stations in orbit, to the losses in efficiency in conversion, and to the safety issues surrounding some wireless transmission methods, particularly those that use microwaves.
Astrium says the latter can be addressed by using infrared lasers which, if misdirected, would not risk "cooking" anyone in their path."
I got a great laugh out of that one. A+ journalism!