Solar energy is more efficient in space because there’s no atmosphere and depending on the orbit can be in the sun for much, much longer than on earth over the day. Apparently you can beam the energy down to earth somehow, but you lose something like 50%. So the solution is to put the data center up where you get the power. The downside is that it costs a fuckton to send it up, cooling becomes an issue, temperature gradients become an issue, heat and cold cycles as it goes from sun to the dark side of earth is an issue, and the funnest part is that cosmic rays can fry electronics like GPUs.