I believe that the sun shines upon the earth as well as in space. Id hate to be zapped by some "power ray" from a satellite in a decaying orbit.
Yeah, but who wants to cover those nice deserts with black fabric?
There's a nice way of transmitting the power securely. You have your receiver surrounded by a ring. If the power beam touches the outside ring, you shut it off.
And you use microwaves, so there's no ionizing radiation.
Once you have a laser launching system, just stick your industries on the moon. Less gravity, but enough to hold things in place. Regolith makes great plant food....
Then you can harvest He3 for fusion processes as well.
Enough cheap power, and you can make the entire Earth a paradise.