Even for their own internal use in their data centers they'd have to save an absolute boat load on power and cooling given their performance per watt compared to legacy stuff.
Lenovo's DLC systems use 45 degrees C water to directly cool the power supplies and the servers themselves (water goes through them) for > 97% heat transfer to water. In cooler climates, you can just pump this to your drycoolers, and in winter you can freecool them with just air convection.
Yes, the TDP doesn't go down, but cooling costs and efficiency shots up considerably, reducing POE to 1.03 levels. You can put tremendous amount of compute or GPU power in one rack, and cool them efficiently.
Every chassis handles its own power, but IIRC, all the chassis electricity is DC. and the PSUs are extremely efficient.