I'm running everything off a 20a dedicated, but only one. Maybe I don't have great power in Florida but my house is 99% solar powered which means I'm still on the grid. Whenever Elon gets around to shipping my powerwalls I wonder if there could be even more interesting improvements since I will be completely off the grid.
That will be most interesting to me. I had never considered the possible effect of solar power. Keep us posted, please.