Quote - cost. not really practical until we can build a space tether or develop a cheap launcher system.

a Sat system, you really want to be at the Lagrange points for simplicity, it's going to be huge in size, (tho, the collector can be very lightweight/low mass, we're still talking bulk), then there's getting the power down.

and thats just one Sat....

And, of course, there's a trade-off issue: security. The line between "orbiting solar power satellite" and "orbital death ray" is a fuzzy one (albeit not as fuzzy as some people would think, but still...)

You see people getting up in arms at the idea that WiFi signals might somehow be causing them to develop tumors. You think people are going to be more rational when told that someone is pointing a giant microwave at their heads?