Well, its obviously workable, and did not require any nonavailable technology, so... why not?
Wen you think thorough on concept, problems show up:
How much light is reflected ? enough to power Solar farm on earth ?
if you take high reflected material solve that problem, but open new ones:
Light pollution, those reflectors will be very bright in night sky.
disrupting wildlife, astronomers and people try to sleep.
How better reflection more push the light the reflector out it orbit.
This also called Solar-sail, but you can use this to your advantage, preventing reentry of reflector.
Or moving reflector to new position for client.
Even make the reflector to a Starllite, Solar-sail a in fixed position held by equilibrium of Light and gravity.
What orbit ?
issue here take, low orbit, the reflector past too fast over Solar farm and it can not illuminate on dark side of earth.
medium orbit and the reflector is in cloud of Starlink or Kupier Satellites
You need higher orbit what make the reflector large very large, and its development more and more difficult.
(imagine a football-field size reflector squeeze in payload bay of Falcon 9 rocket)
There homepage graphic show a ring of reflectors in low Polar orbit,
i wonder if they try deflect light from one Reflector to another to target.
and i don't know if that even feasible...
