First, space solar/datacenters is total uneconomic bs that was mentioned only to justify xai and spaceX merger.

If a launch costs $1,000 per kilogram, then the cost of energy is about $135 per megawatt-hour

this is only the launch cost premium over the actual equipment. For datacenters there is $200/mwh premium for the equipment. Beamed solar energy, I don’t recall costs, but generally requires a receiver antenna that takes the space of what terrestrial solar could generate.