You do know that one can build the panels on the other hemisphere, right? It is all a small matter of building a long enough high voltage DC line. Mostly a political problem. Or you can use microwaves on ground if it is easier to build a bunch of antennas.
Ultimately also reflect off space mirrors (meshes) for much cheaper.
The main problem is theoretically weather. Space has the other kind of weather called space junk.
HVDC lines are really neat tech and I fully support solar farms in the Sahara to supply Europe, but I wouldn't be surprised if it's cheaper to launch satellites than to build a global power grid that can provide solar power over night.
I think debris is not a terrible problem right now. We manage to have a large number of satellites in high orbits.
Ultimately also reflect off space mirrors (meshes) for much cheaper.
The main problem is theoretically weather. Space has the other kind of weather called space junk.