Satya Nadella： Microsoft's latest Wisconsin AI data center keeps yearly water consumption no higher than that of 1 local restaurant.

"The cooling loop is filled once and the data centre can operate effectively with zero water consumption. Daily water usage across a year is roughly equivalent to what a single restaurant would use"

The mechanism is mainly about replacing evaporative cooling with closed-loop direct-to-chip liquid cooling， so water moves like coolant inside a sealed machine rather than being boiled off into the air.

Hot GB200-class AI racks produce too much heat for normal air cooling， so cold liquid is pushed through pipes into the servers and across metal cold plates touching the hottest chips.

The liquid enters the rack cool， absorbs heat from the chips through cold plates， then exits the rack at a higher temperature and carries that heat through pipes to a huge cooling system outside the compute floor.