That would be 100 amp service at 240V. You have two 120V phases coming into your house each at 100A. Five Neptunes is a lot; but, you make sure your running 3 on one phase and two on the other.
100A x 240V = 24000W
or
100A x 120V + 100A x120V = 24000W
Same power...two phases.
^^^^This. With a modest ~2kw in equipment right now, my house is already above 10kw/h part of the day due to 100oF outside.
I started thinking about solar panels, but they are too darn expensive, like 15K for 5kw worth.
In Texas mining looks more and more like a winter "sport".