I guess I should have explicitly mentioned that solar input is largely defined by how many square kilometers one can dedicate to whatever needs solar input. Unl

I guess I should have explicitly mentioned that solar input is largely defined by how many square kilometers one can dedicate to whatever needs solar input. Unless vertical farming adopts the tricks of forests, where plants at different levels prefer different amounts of sunlight, it won't in any way make efficient use of said solar input. But at that point you might as well just call it a high-tech agroforest.