As much a fan of the concept as I am, I have to agree that the time for orbital powersats beaming to ground targets just isn't here yet. It'll have to wait until a mature space-based mining and manufaturing infrastructure is built; then it'll be cost-effective, because it'll be just one more structure that can be manufactured there, like habitats, large orbital telescopes and interplanetary spacecraft. Such industrial efforts would require large solar power collectors anyway. Sending a bit of that extra energy Earthward would be an afterthought.
Sometime late this century, maybe early next.
Last edited by Noclevername; 2007-Dec-30 at 09:05 PM.
Reason: time is on my side
STARGAZING: All I see are the lights of a billion places I'll never go. --Howard Tayler, Schlock Mercenary