At least office buildings and datacenters, unclear (to me) about factories.
Unlikely factories as they don't belong to Apple (ex. Foxconn) so maybe a bit of greenwash involved here. Regardless, a step in the right direction.
I think it’s unlikely too, though they may buy measured or estimated energy consumption in ‘green credits’ (i.e. provide the same amount of clean energy back into the same grid), as pointed out in a sibling comment.