One major efficiency in solar collection is the amount of heat loss in solar energy absorbed by the atmosphere. Politically, the idea might be also advanced by reducing the dreaded ‘global warming’.
On the other hand, getting that power back to earth is another issue. In the late 70s we had looked at microwaving it back to large collector arrays in the ocean. Of course it might not be so good for birds flying in the area, planes or submarines.
Around these locations there will be an explosion in KFC and other fast-food franchises...