For 100kW? I'm not going to try and figure things out from that massive site. A pre made calculator would have been nice if they had one.
edit: It is going to be LEO and likely connected to starlink with the same laser link they use.
Edit: Looking at orbits they might use sun synchronous orbits? It might not be in sun 100% of the time, but they are nearly always in sun.
Edit: I have no way to know if this is right, but a couple AI responses are saying for 100kW it would be ~150-170 square meters with temperatures around 70c